1P1G3157QDCKRQ1

1P1G3157QDCKRQ1

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    SC70-6

  • 描述:

    SN74LVC1G3157-Q1是一种单极双投(SPDT)模拟开关,设计工作电压范围为1.65V至5.5V。适用于信号选通、斩波、调制或解调以及模数和数模转换系统的信号复用。

  • 数据手册
  • 价格&库存
1P1G3157QDCKRQ1 数据手册
SN74LVC1G3157-Q1 SCES463H – JUNE 2003 – REVISED DECEMBER 2021 SN74LVC1G3157-Q1 Automotive Single-Pole Double-Throw Analog Switch 1 Features 3 Description • The SN74LVC1G3157-Q1 device is a single-pole double-throw (SPDT) analog switch designed for 1.65-V to 5.5-V VCC operation. • • • • • • • • • • Functional safety-capable – Documentation available to aid functional safety system design AEC-Q100 qualified for automotive applications: – Temperature grade 1: –40°C to +125°C, TA ESD protection exceeds 2000 V per MIL-STD-883, method 3015; exceeds 200 V using machine model (C = 200 pF, R = 0) 1.65-V to 5.5-V VCC operation Useful for analog and digital applications Specified break-before-make switching Rail-to-rail signal handling High degree of linearity High speed, typically 0.5 ns (VCC = 3 V, CL = 50 pF) Low ON-State resistance, typically ≉6 Ω (VCC = 4.5 V) Latch-up performance exceeds 100 mA per JESD 78, Class II The SN74LVC1G3157 device can handle analog and digital signals. The device permits signals with amplitudes of up to VCC (peak) to be transmitted in either direction. Applications include signal gating, chopping, modulation or demodulation (modem), and signal multiplexing for analog-to-digital and digital-to-analog conversion systems. Device Information(1) PART NUMBER SN74LVC1G3157-Q1 (1) PACKAGE BODY SIZE (NOM) SOT-23 (6) 2.90 mm × 1.60 mm SC70 (6) 2.00 mm × 1.25 mm For all available packages, see the orderable addendum at the end of the data sheet. 2 Applications • Advanced driver assistance systems (ADAS) B2 1 6 4 S B1 A 3 Logic Diagram (Positive Logic) 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. SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Pin Configuration and Functions...................................3 6 Specifications.................................................................. 4 6.1 Absolute Maximum Ratings........................................ 4 6.2 ESD Ratings............................................................... 4 6.3 Recommended Operating Conditions.........................5 6.4 Thermal Information....................................................5 6.5 Electrical Characteristics.............................................6 6.6 Switching Characteristics............................................7 6.7 Analog Switch Characteristics.................................... 7 6.8 Typical Characteristics................................................ 8 7 Parameter Measurement Information............................ 9 8 Detailed Description......................................................15 8.1 Overview................................................................... 15 8.2 Functional Block Diagram......................................... 15 8.3 Feature Description...................................................15 8.4 Device Functional Modes..........................................15 9 Application and Implementation.................................. 16 9.1 Application Information............................................. 16 9.2 Typical Application.................................................... 16 10 Power Supply Recommendations..............................17 11 Layout........................................................................... 18 11.1 Layout Guidelines................................................... 18 11.2 Layout Example...................................................... 18 12 Device and Documentation Support..........................19 12.1 Documentation Support.......................................... 19 12.2 Receiving Notification of Documentation Updates..19 12.3 Support Resources................................................. 19 12.4 Trademarks............................................................. 19 12.5 Electrostatic Discharge Caution..............................19 12.6 Glossary..................................................................19 13 Mechanical, Packaging, and Orderable Information.................................................................... 19 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision G (April 2019) to Revision H (December 2021) Page • Updated the numbering format for tables, figures, and cross-references throughout the document..................1 • Added functional safety text to the data sheet....................................................................................................1 Changes from Revision F (March 2015) to Revision G (April 2019) Page • Changed the automotive Features .................................................................................................................... 1 • Changed the Pin Configuration images.............................................................................................................. 3 • Changed the ESD Ratings table.........................................................................................................................4 Changes from Revision E (April 2008) to Revision F (March 2015) Page • Added ESD Ratings 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 2 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 5 Pin Configuration and Functions B2 1 6 S GND 2 5 VCC B1 3 4 A B2 1 6 S GND 2 5 VCC B1 3 4 A No t to scale Figure 5-2. DCK Package 6-Pin SC70 Top View No t to scale Figure 5-1. DBV Package 6-Pin SOT-23 Top View Table 5-1. Pin Functions PIN NAME NO. TYPE(1) DESCRIPTION A 4 I/O Common terminal B1 3 I/O First terminal B2 1 I/O Second terminal GND 2 — Ground S 6 I Select VCC 5 I Power supply (1) I = input, O = output, GND = ground. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 3 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) Supply voltage(2) VCC voltage(2) (3) MIN MAX UNIT –0.5 6.5 V –0.5 6.5 V –0.5 VCC + 0.5 V VIN Control input VI/O Switch I/O voltage(2) (3) (4) (5) IIK Control input clamp current VIN < 0 –50 mA IIOK I/O port diode current VI/O < 0 –50 mA II/O ON-state switch current VI/O = 0 to VCC (6) Continuous current through VCC or GND θJA Package thermal impedance(7) Tstg Storage temperature (1) (2) (3) (4) (5) (6) (7) ±128 mA ±100 mA DBV package 165 DCK package 258 –65 °C/W 150 °C 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. All voltages are with respect to ground, unless otherwise specified. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. This value is limited to 5.5 V maximum. VI, VO, VA, and VBn are used to denote specific conditions for VI/O. II, IO, IA, and IBn are used to denote specific conditions for II/O. The package thermal impedance is calculated in accordance with JESD 51-7. 6.2 ESD Ratings VALUE Human-body model (HBM), per AEC Q100-002(1) HBM ESD Classification Level 1C V(ESD) (1) 4 Electrostatic discharge Charged-device model (CDM), per AEC Q100-011 CDM ESD Classification Level C6 UNIT ±2000 Other pins ±1000 Corner pins (B2, B1, S, and A) ±1000 V AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted)(1) MIN NOM MAX UNIT VCC 1.65 5.5 V VI/O 0 VCC V 0 5.5 V VIN VIH High-level input voltage, control input VIL Low-level input voltage, control input VCC = 1.65 V to 1.95 V VCC × 0.75 VCC = 2.3 V to 5.5 V VCC = 1.65 V to 1.95 V VCC × 0.25 VCC = 2.3 V to 5.5 V Δt/Δv Input transition rise/fall time V VCC × 0.3 VCC = 1.65 V to 1.95 V 20 VCC = 2.3 V to 2.7 V 20 VCC = 3 V to 3.6 V 10 VCC = 4.5 V to 5.5 V 10 TA (1) V VCC × 0.7 –40 125 ns/V °C All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, SCBA004. 6.4 Thermal Information SN74LVC1G3157-Q1 THERMAL METRIC(1) DBV (SOT-23) DCK (SC70) 6 PINS 6 PINS RθJA Junction-to-ambient thermal resistance 201.8 233.8 RθJC(top) Junction-to-case (top) thermal resistance 103.7 107.9 RθJB Junction-to-board thermal resistance 51.8 52.7 ψJT Junction-to-top characterization parameter ψJB Junction-to-board characterization parameter (1) 12 4.9 51.4 52.4 UNIT °C/W For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 5 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 6.5 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER ron ON-state switch resistance(2) ON-state switch resistance over signal range(2) (3) rrange See Figure 7-1 and Figure 6-1 ron(flat) ON-state resistance (4) (6) flatness(2) VCC VI = 0 V, IO = 4 mA VI = 1.65 V, IO = –4 mA VI = 0 V, IO = 8 mA VI = 2.3 V, IO = –8 mA VI = 0 V, IO = 24 mA VI = 3 V, IO = –24 mA VI = 0 V, IO = 30 mA VI = 2.4 V, IO = –30 mA VI = 4.5 , IO = –30 mA 1.65 V 2.3 V 3V 4.5 V MIN TYP(1) MAX UNIT 11 20 15 50 8 12 11 30 7 9.5 9 20 6 7.5 7 12 7 1.65 V 140 IA = –8 mA 2.3 V 45 IA = –24 mA 3V 18 IA = –30 mA 4.5 V 10 VBn = 1.15 V, IA = –4 mA 1.65 V 0.5 VBn = 1.6 V, IA = –8 mA 2.3 V 0.1 VBn = 2.1 V, IA = –24 mA 3V 0.1 VBn = 3.15 V, IA = –30 mA 4.5 V 0.1 IA = –4 mA 1.65 V 110 IA = –8 mA 2.3 V 26 IA = –24 mA 3V 9 IA = –30 mA 4.5 V 4 0 ≤ VBn ≤ VCC Ω Ω Ω ±1 Ioff (7) OFF-state switch leakage current IS(on) ON-state switch leakage current VI = VCC or GND, VO = Open (see Figure 7-3) IIN Control input current 0 ≤ VIN ≤ VCC ICC Supply current VIN = VCC or GND 5.5 V ΔICC Supply-current change VIN = VCC – 0.6 V 5.5 V Cin Control input capacitance S 5V 2.7 pF Cio(off) Switch I/O capacitance 5V 5.2 pF Cio(on) Switch I/O capacitance (1) (2) (3) (4) (5) (6) (7) 0 ≤ VI, VO ≤ VCC (see Figure 7-2) Bn Bn 1.65 V to 5.5 V Ω 15 IA = –4 mA 0 ≤ VBn ≤ VCC (see Figure 7-1 and Figure 6-1) Difference in on-state resistance See Figure 7-1 between switches(2) (4) (5) Δron 6 TEST CONDITIONS 0V to 5.5 V ±1(1) ±1 5.5 V 5V A ±0.05 ±0.1(1) ±1 ±0.05 1 17.3 17.3 ±1(1) μA μA μA 10 μA 500 μA pF TA = 25°C Measured by the voltage drop between I/O pins at the indicated current through the switch. ON-state resistance is determined by the lower of the voltages on the two (A or B) ports. Specified by design Δron = ron(max) – ron(min) measured at identical VCC, temperature, and voltage levels This parameter is characterized, but not tested in production. Flatness is defined as the difference between the maximum and minimum values of ON-state resistance over the specified range of conditions. Ioff is the same as IS(off) (OFF-state switch leakage current). Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 6.6 Switching Characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 7-4 and Figure 7-10) PARAMETER tpd (1) ten FROM (INPUT) TO (OUTPUT) A or Bn Bn or A S Bn (2) tdis (3) tB-M (4) (1) (2) (3) (4) VCC = 1.8 V ± 0.15 V MIN VCC = 2.5 V ± 0.2 V MAX MIN VCC = 3.3 V ± 0.3 V MAX 2 MIN MAX 1.2 VCC = 5 V ± 0.5 V MIN 0.8 UNIT MAX 0.3 7 24 3.5 14 2.5 7.6 1.7 5.7 3 13 2 7.5 1.5 5.3 0.8 3.8 0.5 0.5 0.5 ns ns 0.5 ns tpd is the slower of tPLH or tPHL. Propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance when driven by an ideal voltage source (zero output impedance). ten is the slower of tPZL or tPZH. tdis is the slower of tPLZ or tPHZ. Specified by design 6.7 Analog Switch Characteristics TA = 25°C PARAMETER Frequency response (switch on)(1) Crosstalk (between switches)(2) Feedthrough attenuation (switch off)(2) FROM (INPUT) A or Bn B1 or B2 A or Bn Charge injection(3) Total harmonic distortion (1) (2) (3) S TO (OUTPUT) Bn or A B2 or B1 Bn or A A A or Bn Bn or A TEST CONDITIONS RL = 50 Ω, fin = sine wave (see Figure 7-5) RL = 50 Ω, fin = 10 MHz (sine wave) (see Figure 7-6) CL = 5 pF, RL = 50 Ω, fin = 10 MHz (sine wave) (see Figure 7-7) CL = 0.1 nF, RL = 1 MΩ (see Figure 7-8) VI = 0.5 Vp-p, RL = 600 Ω, fin = 600 Hz to 20 kHz (sine wave) (see Figure 7-9) VCC TYP UNIT 1.65 V 300 2.3 V 300 3V 300 4.5 V 300 1.65 V –54 2.3 V –54 3V –54 4.5 V –54 1.65 V –57 2.3 V –57 3V –57 4.5 V –57 3.3 V 3 5V 7 1.65% 0.1% 2.3% 0.025% 3% 0.015% 4.5% 0.01% MHz dB dB pC V Adjust fin voltage to obtain 0 dBm at output. Increase fin frequency until dB meter reads –3 dB. Adjust fin voltage to obtain 0 dBm at input. Specified by design Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 7 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 6.8 Typical Characteristics 120 VCC = 1.65 V 100 ron − W 80 60 40 VCC = 2.3 V 20 VCC = 3 V VCC = 4.5 V 0 0 1 2 3 4 5 VI − V Figure 6-1. Typical Ron as a Function of Input Voltage (VI) for VI = 0 To VCC 8 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 7 Parameter Measurement Information VCC SW VCC S S 1 VIL 2 VIH VIL or VIH 1 B1 SW B2 VO 2 A VI = VCC or GND GND IO r on + V Ť Ť VI * VO W IO VI – VO Figure 7-1. ON-State Resistance Test Circuit VCC VIL or VIH S SW VCC B1 VI A 1 VIL 2 VIH 1 SW B2 S VO 2 A GND Condition 1: VI = GND, VO = VCC Condition 2: VI = VCC, VO = GND Figure 7-2. OFF-State Switch Leakage-Current Test Circuit Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 9 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 VCC S VIL or VIH SW VCC B1 VI 1 VIL 2 VIH 1 SW B2 S VO VO = Open 2 A A GND VI = VCC or GND Figure 7-3. ON-State Switch Leakage-Current Test Circuit 10 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 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 VM VI tr/tf VCC VCC VCC VCC ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 ns VCC/2 VCC/2 VCC/2 VCC/2 VLOAD 2´ 2´ 2´ 2´ VCC VCC VCC VCC CL RL VD 50 pF 50 pF 50 pF 50 pF 500 W 500 W 500 W 500 W 0.3 V 0.3 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 tPLZ VLOAD/2 VM tPZH VOH Output VM 0V Output Waveform 1 S1 at VLOAD (see Note B) tPLH tPHL VM tPZL tPHL tPLH VI Output Control VM VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS Output Waveform 2 S1 at GND (see Note B) VOL + VD VOL tPHZ VM VOH − VD 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 W. D. The outputs are measured one at a time, with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. t PZL 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 7-4. Load Circuit and Voltage Waveforms Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 11 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 VCC SW VCC S S 1 VIL 2 VIH VIL or VIH 1 B1 SW B2 2 RL 50 Ω A GND fin VO 50 Ω Figure 7-5. Frequency Response (Switch On) TEST CONDITION S VCC VIL or VIH VIL 20log10(VO2/VI) VIH 20log10(VO1/VI) VCC S VB1 B1 fin VB2 A Analyzer B2 GND 50 Ω RL 50 Ω Figure 7-6. Crosstalk (Between Switches) VCC S VIL or VIH VCC B1 SW S 1 VIL 2 VIH 1 SW Analyzer B2 A GND fin 2 RL 50 Ω 50 Ω Figure 7-7. Feedthrough 12 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 VCC VCC S 1 B1 Logic Input RGEN SW B2 2 VGE A VOUT GND RL CL RL/CL = 1 MΩ/100 pF Logic Input OFF ON OFF ∆VOUT VOUT Q = (∆VOUT)(CL) Figure 7-8. Charge-Injection Test VCC VCC S VIL or VIH SW B1 1 S 1 VIL 2 VIH 10 µF SW B2 A 2 VO RL 10 kΩ CL 50 pF GND fin VCC/2 600 Ω VCC = 1.65 V, VI = 1.4 VP-P VCC = 2.30 V, VI = 2.0 VP-P VCC = 3.00 V, VI = 2.5 VP-P VCC = 4.50 V, VI = 4.0 VP-P Figure 7-9. Total Harmonic Distortion Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 13 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 VCC VCC S B1 VO VI = VCC/2 B2 A GND VS RL CL RL/CL = 50 Ω/35 pF VO 0.9 y VO tB-M Figure 7-10. Break-Before-Make Internal Timing 14 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 8 Detailed Description 8.1 Overview The SN74LVC1G3157-Q1 device is a single-pole double-throw (SPDT) analog switch designed for 1.65-V to 5.5-V VCC operation. The SN74LVC1G3157-Q1 device can handle analog and digital signals. The device permits signals with amplitudes of up to VCC (peak) to be transmitted in either direction. 8.2 Functional Block Diagram B2 1 6 4 S B1 A 3 Figure 8-1. Logic Diagram (Positive Logic) 8.3 Feature Description These devices are qualified for automotive applications. The 1.65-V to 5.5-V supply operation allows the device to function in many different systems comprised of different logic levels, allowing rail-to-rail signal switching. Either the B1 channel or the B2 channel is activated depending upon the control input. If the control input is low, B1 channel is selected. If the control input is high, B2 channel is selected. 8.4 Device Functional Modes Table 8-1 lists the ON channel when one of the control inputs is selected. Table 8-1. Function Table CONTROL INPUTS ON CHANNEL L B1 H B2 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 15 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 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, as well as validating and testing their design implementation to confirm system functionality. 9.1 Application Information The SN74LVC1G3157-Q1 SPDT analog switch is flexible enough for use in a variety of circuits such as analog audio routing, power-up monitor, memory sharing and so on. For details on the applications, you can also view SCYB014. 9.2 Typical Application Figure 9-1. Typical Application Schematic 9.2.1 Design Requirements The inputs can be analog or digital, but TI recommends waiting until VCC has ramped to a level in Section 6.3 before applying any signals. Appropriate termination resistors should be used depending on the type of signal and specification. The Select pin should not be left floating; either pull up or pull down with a resistor that can be overdriven by a GPIO. 16 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 9.2.2 Detailed Design Procedure Using this circuit idea, a system designer can ensure a component or subsystem power has ramped up before allowing signals to be applied to its input. This is useful for integrated circuits that do not have overvoltage tolerant inputs. The basic idea uses a resistor divider on the VCC1 power rail, which is ramping up. The RC time constant of the resistor divider further delays the voltage ramp on the select pin of the SPDT bus switch. By carefully selecting values for R1, R2 and C, it is possible to ensure that VCC1 will reach its nominal value before the path from A to B2 is established, thus preventing a signal being present on an I/O before the device/ system is powered up. To ensure the minimum desired delay is achieved, the designer should use Equation 1 to calculate the time required from a transition from ground (0 V) to half the supply voltage (VCC1/2). § R2 · u VCC1 ! VIH ¸ of the select pin Set ¨ R1 R2 © ¹ (1) Choose Rs and C to achieve the desired delay. When Vs goes high, the signal will be passed. 9.2.3 Application Curve Figure 9-2. VS Voltage Ramp 10 Power Supply Recommendations Most systems have a common 3.3-V or 5-V rail that can supply the VCC pin of this device. If this is not available, a Switch-Mode-Power-Supply (SMPS) or a Linear Dropout Regulator (LDO) can be used to provide supply to this device from another voltage rail. Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 17 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 11 Layout 11.1 Layout Guidelines TI recommends keeping signal lines as short as possible. TI also recommends incorporating microstrip or stripline techniques when signal lines are greater than 1 inch in length. These traces must be designed with a characteristic impedance of either 50 Ω or 75 Ω, as required by the application. Do not place this device too close to high-voltage switching components, as they may interfere with the device. 11.2 Layout Example Figure 11-1. Recommended Layout Example 18 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 SN74LVC1G3157-Q1 www.ti.com SCES463H – JUNE 2003 – REVISED DECEMBER 2021 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation For related documentation, see the following: • Texas Instruments, SN74LVC1G3157 and SN74LVC2G53 SPDT Analog Switches product overview • Texas Instruments, SN74LVC1G3157-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA report 12.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Subscribe to updates 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 Support Resources TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is 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. 12.4 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 12.6 Glossary 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 Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: SN74LVC1G3157-Q1 19 PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) 1P1G3157QDBVRQ1 ACTIVE SOT-23 DBV 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 CC5O 1P1G3157QDCKRQ1 ACTIVE SC70 DCK 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 C5O (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
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1P1G3157QDCKRQ1
  •  国内价格 香港价格
  • 1+2.643811+0.33122
  • 10+1.8059010+0.22624
  • 25+1.6016425+0.20065
  • 100+1.37713100+0.17253
  • 250+1.26873250+0.15895
  • 500+1.20381500+0.15082
  • 1000+1.150291000+0.14411

库存:25270

1P1G3157QDCKRQ1
  •  国内价格 香港价格
  • 3000+1.084103000+0.13582
  • 6000+1.051736000+0.13176
  • 9000+1.035509000+0.12973
  • 15000+1.0175415000+0.12748
  • 21000+1.0070421000+0.12616
  • 30000+0.9969430000+0.12490
  • 75000+0.9752075000+0.12217

库存:25270