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SN74LVC1G57DCKR

SN74LVC1G57DCKR

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SC70-6

  • 描述:

    可配置多功能门

  • 数据手册
  • 价格&库存
SN74LVC1G57DCKR 数据手册
Product Folder Sample & Buy Technical Documents Support & Community Tools & Software SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 SN74LVC1G57 Configurable Multiple-Function Gate 1 Features 3 Description • • The SN74LVC1G57 device features configurable multiple functions. The output state is determined by eight patterns of 3-bit input. The user can choose the logic functions AND, OR, NAND, NOR, XNOR, inverter, and buffer. All inputs can be connected to VCC or GND. 1 • • • • • • • Supports 5-V VCC Operation Inputs Accept Voltages to 5.5 V – Supports Down Translation to VCC Max tpd of 6.3 ns at 3.3 V Schmitt-Triggered Inputs Low Power Consumption, 10-µA Maximum ICC ±24-mA Output Drive at 3.3 V Ioff Supports Live Insertion, Partial-Power-Down Mode, and Back-Drive Protection Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II Available in the Texas Instruments NanoFree™ Package 2 Applications • • • • • • • • • • Active Noise Cancellation (ANC) Barcode Scanners Blood Pressure Monitors CPAP Machines Cable Solutions Embedded PCs Field Transmitter: Temperature or Pressure Sensors HVAC: Heating, Ventilating, and Air Conditioning TVs: High-Definition (HDTV), LCD, and Digital Video Communications Systems This device functions as an independent gate, but because of Schmitt action, it may have different input threshold levels for positive-going (VT+) and negativegoing (VT–) signals. This configurable multiple-function gate is designed for 1.65-V to 5.5-V VCC operation. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package. Device Information(1) DEVICE NAME PACKAGE BODY SIZE (NOM) SN74LVC1G57DBV SOT-23 (6) 2.90 mm × 1.60 mm SN74LVC1G57DCK SC70 (6) 2.00 mm × 1.25 mm SN74LVC1G57DRL SOT (6) 1.60 mm × 1.20 mm SN74LVC1G57DRY SON (6) 1.45 mm × 1.00 mm SN74LVC1G57DSF SON (6) 1.00 mm × 1.00 mm SN74LVC1G57YZP DSBGA (6) 1.41 mm × 0.91 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Logic Diagram (Positive Logic) Copyright © 2016, Texas Instruments Incorporated 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 4 4 4 5 5 6 6 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Switching Characteristics .......................................... Typical Characteristics .............................................. Parameter Measurement Information .................. 7 Detailed Description .............................................. 8 8.1 Overview ................................................................... 8 8.2 Functional Block Diagram ......................................... 8 8.3 Feature Description................................................... 8 8.4 Device Functional Modes.......................................... 8 9 Application and Implementation ........................ 10 9.1 Application Information............................................ 10 9.2 Typical Application .................................................. 10 10 Power Supply Recommendations ..................... 12 11 Layout................................................................... 12 11.1 Layout Guidelines ................................................. 12 11.2 Layout Example .................................................... 12 12 Device and Documentation Support ................. 13 12.1 12.2 12.3 12.4 12.5 12.6 Documentation Support ........................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 13 13 13 13 13 13 13 Mechanical, Packaging, and Orderable Information ........................................................... 13 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision O (December 2013) to Revision P Page • Added Applications section, Device Information table, ESD Ratings table, Thermal Information table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ...................................................................................................................... 1 • Changed Package thermal impedance, RθJA, values From: 165°C/W To: 223°C/W (DBV), From: 259°C/W To: 271.7°C/W (DCK), From: 142°C/W To: 252.5°C/W (DRL), and From: 123°C/W To: 124°C/W (YZP)................................... 5 Changes from Revision N (April 2013) to Revision O Page • Changed Ioff in Features ......................................................................................................................................................... 1 • Changed Operating temperature range.................................................................................................................................. 4 Changes from Revision M (October 2011) to Revision N • Page Removed Ordering Information table; package updates now included in Package Ordering Addendum ............................. 1 Changes from Revision L (January 2007) to Revision M Page • Added additional package options to the Ordering Information table .................................................................................... 1 • Added DRY and DSF packages to data sheet....................................................................................................................... 1 2 Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 5 Pin Configuration and Functions DBV, DCK, or DRL Package 6-Pin SOT-23, SC70, or SOT Top View In1 1 6 In2 GND 2 5 VCC In0 3 4 Y DRY or DSF Package 6-Pin SON Top View In1 1 6 In2 GND 2 5 VCC In0 3 4 Y Not to scale Not to scale YZP Package 6-Pin DSBGA Top View In1 GND In0 A1 1 6 A2 B1 2 5 B2 C1 3 4 C2 In2 VCC Y Pin Functions PIN NO. NAME I/O DESCRIPTION 1 In1 I Logic input 1 2 GND — 3 In0 I Logic input 0 4 Y O Logic output 5 VCC — Power 6 In2 I Ground Logic input 2 Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 3 SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) Supply voltage, VCC Input voltage, VI (2) Voltage range (applied to any output), VO MIN MAX UNIT –0.5 6.5 V V –0.5 6.5 High-impedance or power-off state (2) –0.5 6.5 High or low state (2) (3) –0.5 VCC + 0.5 V Input clamp current, IIK (VI < 0) –50 mA Output clamp current, IOK (VO < 0) –50 mA Continuous output current, IO ±50 mA Continuous current through VCC or GND ±100 mA Junction temperature, TJ 150 °C 150 °C Storage temperature, Tstg (1) (2) (3) –65 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. The value of VCC is provided in the Recommended Operating Conditions table. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) UNIT ±2000 Charged-device model (CDM), per JEDEC specification JESD22-C101 (2) V ±1000 JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) (1) Operating MIN MAX 1.65 5.5 UNIT VCC Supply voltage VI Input voltage 0 5.5 V VO Output voltage 0 VCC V Data retention only 1.5 VCC = 1.65 V –4 VCC = 2.3 V IOH High-level output current –8 –16 VCC = 3 V Low-level output current –32 VCC = 1.65 V 4 VCC = 2.3 V 8 16 VCC = 3 V (1) 4 Operating free-air temperature mA 24 VCC = 4.5 V TA mA –24 VCC = 4.5 V IOL V 32 BGA package –40 85 All other packages –40 125 °C All unused inputs of the device must be held at VCC or GND to ensure proper device operation, see Implications of Slow or Floating CMOS Inputs (SCBA004). Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 6.4 Thermal Information SN74LVC1G57 THERMAL METRIC RθJA (1) Junction-to-ambient thermal resistance RθJC(top) Junction-to-case (top) thermal resistance DBV (SOT) DCK (SOT) DRL (SOT) YZP (DSGBA) DSF (SON) DRY (SON) 6 PINS 6 PINS 6 PINS 6 PINS 6 PINS 6 PINS UNIT 223 271.7 252.5 124 360.1 332.5 °C/W 174.4 129.8 111.6 1.4 158.8 198.5 °C/W 71 73.1 118.5 29.7 213.5 189 °C/W RθJB Junction-to-board thermal resistance ψJT Junction-to-top characterization parameter 57.1 8.3 11.8 0.5 20.4 44.3 °C/W ψJB Junction-to-board characterization parameter 70.3 72.4 118.8 30.1 213.2 189.7 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.5 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VT+ VT– ΔVT TEST CONDITIONS Positive-going input threshold voltage Hysteresis (VT+ – VT–) 1.16 VCC = 2.3 V 1.11 1.56 1.5 1.87 VCC = 4.5 V 2.16 2.74 VCC = 5.5 V 2.61 3.33 VCC = 1.65 V 0.35 0.62 VCC = 2.3 V 0.58 0.87 VCC = 3 V 0.84 1.19 VCC = 4.5 V 1.41 1.9 VCC = 5.5 V 1.87 2.29 VCC = 1.65 V 0.3 0.62 VCC = 2.3 V 0.4 0.8 VCC = 3 V 0.53 0.87 VCC = 4.5 V 0.71 1.04 VCC = 5.5 V 0.71 1.11 1.2 VCC = 2.3 V, IOH = –8 mA 1.9 VCC = 3 V, IOH = –16 mA 2.4 VCC = 3 V, IOH = –24 mA 2.3 VCC = 4.5 V, IOH = –32 mA 3.8 V 0.1 0.3 TA = –40°C to 85°C 0.4 TA = –40°C to 125°C 0.45 VCC = 3 V, IOL = 24 mA V 0.55 TA = –40°C to 85°C 0.55 TA = –40°C to 125°C 0.58 II VCC = 0 V to 5.5 V, VI = 5.5 V or GND Ioff VCC = 0 V, VI or VO = 5.5 V ICC VCC = 1.65 V to 5.5 V, VI = 5.5 V or GND, IO = 0 ΔICC VCC = 3 V to 5.5 V, one input at VCC – 0.6 V, other inputs at VCC or GND Ci VCC = 3.3 V, VI = VCC or GND (1) V 0.45 VCC = 2.3 V, IOL = 8 mA VCC = 4.5 V, IOL = 32 mA V V VCC = 1.65 V, IOL = 4 mA VCC = 3 V, IOL = 16 mA UNIT VCC – 0.1 VCC = 1.65 V, IOH = –4 mA VCC = 1.65 V to 5.5 V, IOL = 100 µA VOL MAX 0.79 VCC = 1.65 V to 5.5 V, IOH = –100 µA VOH TYP (1) VCC = 1.65 V VCC = 3 V Negative-going input threshold voltage MIN ±1 µA ±10 µA 10 µA 500 µA 3.5 pF All typical values are at VCC = 3.3 V, TA = 25°C Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 5 SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com Electrical Characteristics (continued) over recommended operating free-air temperature range (unless otherwise noted) PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance f = 10 MHz, TA = 25°C MIN TYP (1) VCC = 1.8 V 20 VCC = 2.5 V 20 VCC = 3.3 V 21 VCC = 5 V 22 MAX UNIT pF 6.6 Switching Characteristics over recommended operating free-air temperature range (unless otherwise noted; see Figure 3) PARAMETER TEST CONDITIONS MIN VCC = 1.8 V ± 0.15 V TA = –40°C to 85°C tpd Any input to Y (output) TA = –40°C to 125°C TYP MAX 3.2 14.4 VCC = 2.5 V ± 0.2 V 2 8.3 VCC = 3.3 V ± 0.3 V 1.5 6.3 VCC = 5 V ± 0.5 V 1.1 5.1 VCC = 1.8 V ± 0.15 V 3.2 16.4 VCC = 2.5 V ± 0.2 V 2 9.3 VCC = 3.3 V ± 0.3 V 1.5 7.3 VCC = 5 V ± 0.5 V 1.1 6.1 UNIT ns 6.7 Typical Characteristics 100 3.05 3 80 2.95 60 2.9 2.85 20 VOH (V) IOFF (nA) 40 0 -20 2.8 2.75 2.7 2.65 -40 2.6 -60 2.55 -80 2.5 -100 2.45 0 0.5 1 1.5 2 2.5 3 VIN (V) 3.5 4 4.5 5 5.5 Figure 1. Partial-Power-Down Mode IOFF Across VIN 6 0 5 D001 10 15 20 25 IOH (mA) 30 35 40 D002 Figure 2. Output Voltage (VOH) vs Current (IOH) Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 7 Parameter Measurement Information VLOAD S1 RL From Output Under Test CL (see Note A) Open GND RL TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open VLOAD GND LOAD CIRCUIT INPUTS VCC 1.8 V ± 0.15 V 2.5 V ± 0.2 V 3.3 V ± 0.3 V 5 V ± 0.5 V VI tr/tf VCC VCC 3V VCC ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 ns VM VLOAD CL RL V∆ VCC/2 VCC/2 1.5 V VCC/2 2 × VCC 2 × VCC 6V 2 × VCC 30 pF 30 pF 50 pF 50 pF 1 kΩ 500 Ω 500 Ω 500 Ω 0.15 V 0.15 V 0.3 V 0.3 V VI Timing Input VM 0V tw tsu VI Input VM VM th VI Data Input VM VM 0V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATION VI VM Input VM 0V VOH VM Output VM VOL VM 0V VLOAD/2 VM tPZH VOH Output VM tPLZ Output Waveform 1 S1 at VLOAD (see Note B) tPLH tPHL VM tPZL tPHL tPLH VI Output Control VM VOL VOL tPHZ Output Waveform 2 S1 at GND (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS VOL + V∆ VM VOH − V∆ VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω. D. The outputs are measured one at a time, with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. H. All parameters and waveforms are not applicable to all devices. Figure 3. Load Circuit and Voltage Waveforms Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 7 SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com 8 Detailed Description 8.1 Overview The SN74LVC1G57 device features configurable multiple functions. The output state is determined by eight patterns of 3-bit input. The user can choose the logic functions AND, OR, NAND, NOR, XNOR, inverter, and buffer. All inputs can be connected to VCC or GND. The CMOS device has high output drive while maintaining low static power dissipation over a broad VCC operating range. This configurable multiple-function gate is designed for 1.65-V to 5.5-V VCC operation. 8.2 Functional Block Diagram Copyright © 2016, Texas Instruments Incorporated 8.3 Feature Description 8.3.1 Schmitt-Trigger Inputs Schmitt-trigger inputs are designed to provide a minimum separation between positive and negative switching thresholds. This allows for noisy or slow inputs that would cause problems such as oscillation or excessive current draw with normal CMOS inputs 8.3.2 Inputs Accept Voltages to 5.5 V The SN74LVC1G57 is a configurable multiple-function gate is designed for 1.65-V to 5.5-V VCC operation. Inputs are over-voltage tolerant up to 5.5 V. This feature allows the use of this device as a translator in a mixed 1.8-V, 3.3-V, and 5-V system environment. 8.4 Device Functional Modes Table 1 lists the functional modes of the SN74LVC1G57 and Table 2 lists the logic configuration images. Table 1. Function Table INPUTS 8 OUTPUT In2 In1 In0 Y L L L H L L H L L H L H L H H L H L L L H L H L H H L H H H H H Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 Table 2. Logic Configurations LOGIC FUNCTION FIGURE NO. 2-Input AND Figure 4 2-Input AND with both inputs inverted Figure 7 2-Input NAND with inverted input Figure 5 and Figure 6 2-Input OR with inverted input Figure 5 and Figure 6 2-Input NOR Figure 7 2-Input NOR with both inputs inverted Figure 4 2-Input XNOR Figure 8 VCC A Y B A VCC A Y B A Y B 1 6 2 5 3 4 A B A Y Y B Figure 4. 2-Input AND Gate 1 6 2 5 3 4 B Y Figure 5. 2-Input NAND Gate With Inverted A Input VCC VCC A A Y B A B Y Y B A 1 6 2 5 3 4 B A Y A B Y Figure 6. 2-Input NAND Gate With Inverted B Input 1 6 2 5 3 4 B Y Figure 7. 2-Input NOR Gate VCC A Y B A 1 6 2 5 3 4 B Y Figure 8. 2-Input XNOR Gate Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 9 SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The SN74LVC1G57 features configurable multiple functions. The output state is determined by eight patterns of 3-bit input. The user can choose the logic functions AND, NAND, NOR, XNOR, inverter, and buffer. All inputs can be connected to VCC or GND. 9.2 Typical Application This application shows the SN74LVC1G57 configured as an OR gate with an inverted input. This particular configuration is helpful for dual sensor or switch applications where one of the inputs is normally closed or a logic high 1. Normally this application would require two external gates, but because the SN74LVC1G57 can be configured to meet this function the application can be implemented with a single chip solution. VCC 10 k VCC Sensor SN74LVC1G57 contact closes circuit 1 0.1 PF 6 VCC 0.1 PF 2 5 3 4 10 k 10 k Alarm 0.1 PF Copyright © 2016, Texas Instruments Incorporated Figure 9. Dual-Sensor Alarm Trigger 10 Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 Typical Application (continued) 9.2.1 Design Requirements 9.2.1.1 Application Truth Table Because we are working with two independent alarm triggers, we need to ensure that the alarm signal is only sent whenever either condition is met. Therefore our resulting truth table will look very much like a logic OR function. However, since we are also assuming one of the conditions to always be true, i.e. a door that should remain closed, we make use of the inverted input in Table 3. Table 3. Dual-Sensor Truth Table INPUTS OUTPUT TRIGGER OR SWITCH SENSOR ALARM H L X H L L X H H 9.2.1.2 Schmitt-Trigger Inputs On a normal (non-Schmitt-Trigger) input the part will switch at the same point on the rising edge and falling edge. With a slow rising edge the part will switch at the threshold. When the switch occurs it will require current from VCC. When current is forced from VCC, the VCC level can drop causing the threshold to shift. When the threshold shifts it will cross the input again causing the part to switch again. This can go on and on causing oscillation which can cause excessive current. The same thing can happen if there is noise on the input. The noise can cross the threshold multiple times and cause oscillation or multiple clocking. The solution to these problems is to use a Schmitt-Trigger type device to translate the slow or noisy edges into something faster that will meet the input rise and fall specs of the following device. A true Schmitt-Trigger input will not have rise and fall time limitations. 9.2.2 Detailed Design Procedure 1. Recommended Input conditions: – Specified high and low levels. See (VIH and VIL) in Recommended Operating Conditions. – Inputs are overvoltage tolerant allowing them to go as high as 5.5 V at any valid VCC. 2. Recommended output conditions: – Load currents should not exceed 20 mA on the output and 50 mA total for the part. – Outputs should not be pulled above VCC. 9.2.3 Application Curves 6 2 5 1.5 Voltage [V] Voltage [V] 4 3 2 1 0.5 1 0 0 VOH VIN VOH VIN -1 -0.5 0 4 8 12 Time [ns] 16 20 24 0 4 D003 Figure 10. Simulated Output VOH at 5 V and 25°C 8 12 16 Time [ns] 20 24 28 D004 Figure 11. Simulated Output VOH at 1.8 V and 25°C Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 11 SN74LVC1G57 SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 www.ti.com 10 Power Supply Recommendations The power supply can be any voltage between the minimum and maximum supply voltage rating located in the Recommended Operating Conditions. Each VCC terminal should have a good bypass capacitor to prevent power disturbance. For devices with a single supply, a 0.1-µF bypass capacitor is recommended. If there are multiple pins labeled VCC, then a 0.01-µF or 0.022-µF capacitor is recommended for each VCC because the VCC pins will be tied together internally. For devices with dual supply pins operating at different voltages, for example VCC and VDD, a 0.1-µF bypass capacitor is recommended for each supply pin. It is acceptable to parallel multiple bypass capacitors to reject different frequencies of noise. 0.1-µF and 1-µF capacitors are commonly used in parallel. The bypass capacitor should be installed as close to the power terminal as possible for best results. 11 Layout 11.1 Layout Guidelines Reflections and matching are closely related to the loop antenna theory but are different enough to be discussed separately from the theory. When a PCB trace turns a corner at a 90° angle, a reflection can occur. A reflection occurs primarily because of the change of width of the trace. At the apex of the turn, the trace width increases to 1.414 times the width. This increase upsets the transmission-line characteristics, especially the distributed capacitance and self–inductance of the trace which results in the reflection. Not all PCB traces can be straight and therefore some traces must turn corners. Figure 12 shows progressively better techniques of rounding corners. Only the last example (BEST) maintains constant trace width and minimizes reflections. 11.2 Layout Example BETTER BEST 2W WORST 1W min. W Figure 12. Trace Example 12 Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 SN74LVC1G57 www.ti.com SCES414P – NOVEMBER 2002 – REVISED NOVEMBER 2016 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation For related documentation see the following: Implications of Slow or Floating CMOS Inputs (SCBA004) 12.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.4 Trademarks NanoFree, E2E are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.6 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2002–2016, Texas Instruments Incorporated Product Folder Links: SN74LVC1G57 13 PACKAGE OPTION ADDENDUM www.ti.com 4-Apr-2019 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) SN74LVC1G57DBVR ACTIVE SOT-23 DBV 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 125 (CA7O, CA7R) SN74LVC1G57DCKR ACTIVE SC70 DCK 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU | CU SN Level-1-260C-UNLIM -40 to 125 (CL5, CLF, CLJ, CL K, CLR) SN74LVC1G57DCKRG4 ACTIVE SC70 DCK 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 125 CLF SN74LVC1G57DRLR ACTIVE SOT-5X3 DRL 6 4000 Green (RoHS & no Sb/Br) CU NIPDAU | CU NIPDAUAG Level-1-260C-UNLIM -40 to 125 (CL7, CLR) SN74LVC1G57DRY2 ACTIVE SON DRY 6 5000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 125 CL SN74LVC1G57DRYR ACTIVE SON DRY 6 5000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 125 CL SN74LVC1G57DSFR ACTIVE SON DSF 6 5000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 125 CL SN74LVC1G57YZPR ACTIVE DSBGA YZP 6 3000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM -40 to 85 CLN (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
SN74LVC1G57DCKR 价格&库存

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SN74LVC1G57DCKR
    •  国内价格
    • 1+0.81868

    库存:1