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CD74HCT390E

CD74HCT390E

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    PDIP16

  • 描述:

    IC DUAL DECADE RIP COUNTR 16-DIP

  • 数据手册
  • 价格&库存
CD74HCT390E 数据手册
CD74HC390, CD54HCT390, CD74HCT390 SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 CD74HC390, CDx4HCT390 High-Speed CMOS Logic Dual Decade Ripple Counter 1 Features 2 Description • • The SN74HC390 and ‘HCT390 devices include two independent 4-bit decade ripple counters, falling-edge clocked with asynchronous clear. Each counter is divided into two sections, a divide-by-2 and divideby-5 counter, each of which has an independent clock input. This allows for very flexible configuration of the device. • • • • • • • Two BCD decade or bi-quinary counters One package can be configured to divide-by-2, 4, 5, 10, 20, 25, 50, 100 Two controller reset inputs to clear each decade counter individually Fanout (over temperature range) – Standard outputs: 10 LSTTL loads – Bus driver outputs: 15 LSTTL loads Wide operating temperature range: -55°C to 125°C Balanced propagation delay and transition times Significant power reduction compared to LSTTL logic ICs HC types – 2V to 6V operation – High noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V HCT types – 4.5 V to 5.5 V operation – Direct LSTTL input logic compatibility, VIL = 0.8 V (max), VIH = 2 V (min) – CMOS input compatibility, II ≤ 1 μA at VOL, VOH Device Information (1) PART NUMBER PACKAGE BODY SIZE (NOM) CD54HCT390F3A CDIP (16) 24.38 mm × 6.92 mm CD74HC390M SOIC (16) 9.90 mm × 3.90 mm CD74HCT390M SOIC (16) 9.90 mm × 3.90 mm CD74HC390E PDIP (16) 19.31 mm × 6.35 mm CD74HCT390E PDIP (16) 19.31 mm × 6.35 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. nCLKB Q Q Q Q nCLKA R R R R nCLR VCC = 16 GND = 8 2QA 2QB 2QC 2QD Functional Block Diagram 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. CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 Table of Contents 1 Features............................................................................1 2 Description.......................................................................1 3 Revision History.............................................................. 2 4 Pin Configuration and Functions...................................3 5 Specifications.................................................................. 4 5.1 Absolute Maximum Ratings........................................ 4 (1) 5.2 Recommended Operating Conditions ..................... 4 5.3 Thermal Information....................................................4 5.4 Electrical Characteristics.............................................5 5.5 Prerequisite for Switching Characteristics ................. 6 5.6 Switching Characteristics............................................6 6 Parameter Measurement Information............................ 8 7 Detailed Description........................................................9 7.1 Overview..................................................................... 9 7.2 Functional Block Diagram........................................... 9 7.3 Device Functional Modes..........................................10 8 Power Supply Recommendations................................11 9 Layout............................................................................. 11 9.1 Layout Guidelines..................................................... 11 10 Device and Documentation Support..........................12 10.1 Documentation Support.......................................... 12 10.2 Receiving Notification of Documentation Updates..12 10.3 Support Resources................................................. 12 10.4 Trademarks............................................................. 12 10.5 Electrostatic Discharge Caution..............................12 10.6 Glossary..................................................................12 11 Mechanical, Packaging, and Orderable Information.................................................................... 12 3 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (November 2021) to Revision E (April 2022) Page • Corrected table 7-3, QC value 6 from H to L.....................................................................................................10 Changes from Revision C (September 1997) to Revision D (November 2021) Page • Updated the numbering, formatting, tables, figures, and cross-references throughout the doucment to reflect modern data sheet standards............................................................................................................................. 1 • Updated pin names to match current TI naming conventions. 1CP0 is now 1CLK A; 1MR is now 1CLR; 1Q0 is now 1QA; 1CP1 is now 1CLK B; 1Q1 is now 1QB; 1Q2 is now 1QC; 1Q3 is now 1QD; 2Q3 is now 2QD; 2Q2 is now 2QC; 2Q1 is now 2QB; 2CP1 is now 2CLK B; 2Q0 is now 2QA; 2MR is now 2CLR; 2CP0 is now 2CLK A . 1 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 4 Pin Configuration and Functions 1CLKA 1 16 VCC 1CLR 2 1QA 1CLKB 3 15 14 2CLR 4 13 1QB 5 12 2QA 2CLKB 1QC 1QD 6 11 2QB 7 8 10 2QC 2QD GND 9 2CLKA J, N or D Package 16-Pin CDIP, PDIP, or SOIC Top View Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 Submit Document Feedback 3 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 5 Specifications 5.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) VCC MIN MAX -0.5 7 Supply voltage range (2) IIK Input diode current IOK Output diode current IO ±20 mA (VO < 0 or VO > VCC) ±20 mA Output source or sink current per (VO = 0 to VCC) output pin ±25 mA Continuous current through VCC or GND ±50 mA 150 °C 150 °C 300 °C Junction temperature Tstg Storage temperature -65 Lead temperature (Soldering 10s) (SOIC - Lead tips only) (2) V (VI < 0 or VI > VCC) (2) TJ (1) UNIT Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. (1) 5.2 Recommended Operating Conditions MIN MAX 2 6 4.5 5.5 0 VCC HC Types VCC Supply voltage range VI, VO Input or output voltage tt Input rise and fall time TA Temperature range HCT Types 2V V V 1000 4.5 V 500 6V (1) UNIT ns 400 –55 125 ℃ 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 SMOS Inputs, literature number SCBA004. 5.3 Thermal Information CD74HC390, CD74HCT390 THERMAL METRIC RθJA (1) 4 Junction-to-ambient thermal resistance (1) D (SOIC) N (PDIP) 16 PINS 16 PINS UNIT 73 67 °C/W For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 5.4 Electrical Characteristics PARAMETER TEST CONDITIONS(1) VCC (V) 25℃ MIN TYP -40℃ to 85℃ MAX MIN -55℃ to 125℃ MAX MIN MAX UNIT HC TYPES High level input voltage VIH Low level input voltage VIL High level output voltage VOH High level output voltage Low level output voltage VOL Low level output voltage 2 1.5 1.5 1.5 V 4.5 3.15 3.15 3.15 V 6 4.2 4.2 4.2 V 2 0.5 0.5 0.5 V 4.5 1.35 1.35 1.35 V 6 1.8 1.8 1.8 V IOH = – 20 μA 2 1.9 1.9 1.9 V IOH = – 20 μA 4.5 4.4 4.4 4.4 V IOH = – 20 μA 6 5.9 5.9 5.9 V IOH = – 4 mA 4.5 3.98 3.84 3.7 V IOH = – 5.2 mA 6 5.48 IOL = 20 μA 2 0.1 0.1 0.1 V IOL = 20 μA 4.5 0.1 0.1 0.1 V IOL = 20 μA 6 0.1 0.1 0.1 V 5.34 5.2 V IOL = 4 mA 4.5 0.26 0.33 0.4 V IOL = 5.2 mA 6 0.26 0.33 0.4 V II Input leakage current VI = VCC or GND 6 ±0.1 ±1 ±1 μA ICC Supply current VI = VCC or GND 6 8 80 160 μA HCT TYPES VIH High level input voltage 4.5 to 5.5 VIL Low level input voltage 4.5 to 5.5 VOH VOL 2 2 0.8 2 0.8 V 0.8 V High level output voltage IOH = – 20 μA 4.5 4.4 4.4 4.4 V High level output voltage IOH = – 4 mA 4.5 3.98 3.84 3.7 V Low level output voltage IOL = 20 μA 4.5 0.1 0.1 0.1 V Low level output voltage IOL = 4 mA 4.5 0.26 0.33 0.4 V II Input leakage current VI = VCC or GND 5.5 ±0.1 ±1 ±1 μA ICC Supply current VI = VCC or GND 5.5 8 80 160 μA ΔICC (2) (1) (2) Additional supply current per input pin nCLK A inputs 4.5 to held at VCC – 2.1 5.5 100 162 202.5 220.5 nCLK B, CLR 4.5 to inputs held at VCC 5.5 – 2.1 100 216 270 294 μA VI = VIH or VIL, unless otherwise noted. For dual-supply systems theoretical worst case (VI = 2.4 V, VCC = 5.5 V) specification is 1.8mA. Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 Submit Document Feedback 5 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 5.5 Prerequisite for Switching Characteristics PARAMETER VCC (V) 25℃ -40℃ to 85℃ MIN MIN -55℃ to 125℃ MAX MIN MAX UNIT HC TYPES fMAX 2 6 5 4 4.5 30 24 20 6 35 28 24 2 80 100 120 Clock Pulse Width, nCLK A, nCLK B 4.5 16 20 24 6 14 17 20 2 70 90 105 Reset Removal Time 4.5 14 18 21 6 12 15 18 2 50 65 75 4.5 10 13 15 6 9 11 13 Maximum Clock Frequency tW tREM tW Reset Pulse Width MHz ns ns ns HCT TYPES fMAX Maximum Clock Frequency 4.5 27 22 18 MHz tW Clock Pulse Width, nCLK A, nCLK B 4.5 19 24 29 ns tREM Reset Removal Time 4.5 15 19 22 ns tW Reset Pulse Width 4.5 13 16 20 ns 5.6 Switching Characteristics Input tr, tf = 6 ns. Unless otherwise specified, CL = 50pF. (see Parameter Measurement Information) PARAMETER VCC(V) -40℃ to 85℃ 25℃ TYP -55℃ to 125℃ UNIT MAX MAX MAX 175 220 265 ns 35 44 53 ns HC TYPES 2 nCLK A to nQA nCLK B to nQB nCLK B to nQC tpd nCLK B to nQD nCLK A to nQD CLR to Qn 4.5 Submit Document Feedback (3) 6 30 37 45 ns 2 185 230 280 ns 4.5 37 46 56 ns 6 31 39 48 ns 2 245 305 370 ns 4.5 49 61 74 ns 6 42 52 63 ns 2 180 225 270 ns 4.5 15 (3) 36 45 54 ns 6 31 38 46 ns 2 365 455 550 ns 4.5 73 91 110 ns 6 62 77 94 ns 2 190 240 285 ns 38 48 57 ns 32 41 48 ns 4.5 6 6 14 16 (3) Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 5.6 Switching Characteristics (continued) Input tr, tf = 6 ns. Unless otherwise specified, CL = 50pF. (see Parameter Measurement Information) PARAMETER VCC(V) TYP Output Transition Times tt CIN Input Capacitance CPD Power Dissipation Capacitance(1) (2) -40℃ to 85℃ 25℃ -55℃ to 125℃ UNIT MAX MAX MAX 2 75 95 110 ns 4.5 15 19 22 ns 6 13 16 19 ns 10 10 10 pF 5 28 (3) nCLK A to nQA 4.5 17 (3) nCLK B to nQB 4.5 nCLK B to nQC 4.5 nCLK B to nQD 4.5 nCLK A to nQC 4.5 CLR to Qn 4.5 Output Transition Times 4.5 pF HCT TYPES tpd tt CIN Input Capacitance CPD Power Dissipation Capacitance(1) (2) (1) (2) (3) (4) 18 (3) 18 (3) 40 50 60 ns 43 51 65 ns 55 69 83 ns 42 53 63 ns 84 105 126 ns 42 53 63 ns 15 19 22 ns (4) (4) (4) pF 10 5 32 (3) 10 10 pF CPD is used to determine the dynamic power consumption, per package. PD = VCC 2 fi + Σ (CL VCC 2 + fO) where fi = Input Frequency, fO = Output Frequency, CL = Output Load Capacitance, VCC = Supply Voltage. CL = 15 pF and VCC = 5 V. CL = 15 pF Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 Submit Document Feedback 7 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 6 Parameter Measurement Information Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tt < 6 ns. For clock inputs, fmax is measured when the input duty cycle is 50%. The outputs are measured one at a time with one input transition per measurement. Test Point From Output Under Test CL(1) (1) CL includes probe and test-fixture capacitance. Figure 6-1. Load Circuit for Push-Pull Outputs tw 3V Clock Input 3V Input 1.3V 1.3V 1.3V 0V 0V tsu Figure 6-2. Voltage Waveforms, TTL-Compatible CMOS Inputs Pulse Duration th 3V Data Input 1.3V 1.3V 0V Figure 6-3. Voltage Waveforms, TTL-Compatible CMOS Inputs Setup and Hold Times 3V Input 1.3V 1.3V 0V tPLH(1) tPHL(1) VOH Output Waveform 1 50% 50% VOL tPHL(1) tPLH (1) VOH Output Waveform 2 50% 50% VOL (1) The greater between tPLH and tPHL is the same as tpd. Figure 6-4. Voltage Waveforms, TTL-Compatible CMOS Inputs Propagation Delays 8 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 7 Detailed Description 7.1 Overview The CD74HC390 and ’HCT390 dual 4-bit decade ripple counters are high-speed silicon-gate CMOS devices and are pin compatible with low-power Schottky TTL (LSTTL). These devices are divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections are normally used in a BCD decade or bi-quinary configuration, since they share a common controller reset (nCLR). If the two controller reset inputs (1CLR and 2CLR) are used to simultaneously clear all 8 bits of the counter, a number of counting configurations are possible within one package. The separate clock inputs (nCLK A and nCLK B) of each section allow ripple counter or frequency division applications of divide-by-2, 4, 5, 10, 20, 25, 50, or 100. Each section is triggered by the High-to-Low transition of the input pulses (nCLK A and nCLK B). For BCD decade operation, the nQA output is connected to the nCLK bi-quinary decade operation, the nQD output is connected to the nCLK output. B A input of the divide-by-5 section. For input and nQA becomes the decade The controller reset inputs (1CLR and 2CLR) are active-High asynchronous inputs to each decade counter which operates on the portion of the counter identified by the “1” and “2” prefixes in the pin configuration. A High level on the nCLR input overrides the clock and sets the four outputs Low. 7.2 Functional Block Diagram nCLKB Q Q Q Q nCLKA R R R R nCLR VCC = 16 GND = 8 2QB 2QA 2QC 2QD Figure 7-1. Functional Block Diagram nCLKA nQA ÷2 COUNTER nCLR nQB ÷5 COUNTER nCLKB nQC nQD Figure 7-2. Functional Pinout Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 Submit Document Feedback 9 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 7.3 Device Functional Modes Table 7-1. Truth Table(1) INPUTS (1) CLK CLR ↑ L ACTION No Change ↓ L Count X H All Qs Low H = High voltage level. L = Low voltage level. X = Dont care. ↑ = Transition from low to high level. ↓ = Transition from high to low. Table 7-2. BCD Count Sequence For ½ the 390(1) OUTPUTS COUNT (1) QD QC QB QA 0 L L L L 1 L L L H 2 L L H L 3 L L H H 4 L H L L 5 L H L H 6 L H H L 7 L H H H 8 H L L L 9 H L L H Ouput nQA connected to nCLK B with counter input on nCLK A. Table 7-3. B-Quinary Count Sequence For ½ the 390(1) COUNT (1) 10 OUTPUTS QD QC QB QA 0 L 1 L L L L L H L 2 L 3 L H L L H H L 4 5 H L L L L L L H 6 7 L L H H L H L H 8 L H H H 9 H L L H Output nQD connected to nCLK A with counter input on nCLK B. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 8 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. A 0.1-μF capacitor is recommended for this device. It is acceptable to parallel multiple bypass caps to reject different frequencies of noise. The 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. 9 Layout 9.1 Layout Guidelines When using multiple-input and multiple-channel logic devices inputs must not ever be left floating. In many cases, functions or parts of functions of digital logic devices are unused; for example, when only two inputs of a triple-input AND gate are used or only 3 of the 4 buffer gates are used. Such unused input pins must not be left unconnected because the undefined voltages at the outside connections result in undefined operational states. All unused inputs of digital logic devices must be connected to a logic high or logic low voltage, as defined by the input voltage specifications, to prevent them from floating. The logic level that must be applied to any particular unused input depends on the function of the device. Generally, the inputs are tied to GND or VCC, whichever makes more sense for the logic function or is more convenient. Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 Submit Document Feedback 11 CD74HC390, CD54HCT390, CD74HCT390 www.ti.com SCHS185E – SEPTEMBER 1997 – REVISED APRIL 2022 10 Device and Documentation Support TI offers an extensive line of development tools. Tools and software to evaluate the performance of the device, generate code, and develop solutions are listed below. 10.1 Documentation Support 10.1.1 Related Documentation 10.2 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. 10.3 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. 10.4 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 10.5 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. 10.6 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 11 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. 12 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: CD74HC390 CD54HCT390 CD74HCT390 PACKAGE OPTION ADDENDUM www.ti.com 8-Apr-2022 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) 5962-9098401MEA ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9098401ME A CD54HCT390F3A CD54HCT390F3A ACTIVE CDIP J 16 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9098401ME A CD54HCT390F3A CD74HC390E ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -55 to 125 CD74HC390E CD74HC390EE4 ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -55 to 125 CD74HC390E CD74HC390M ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 HC390M CD74HC390M96 ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 HC390M CD74HCT390E ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -55 to 125 CD74HCT390E CD74HCT390EE4 ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type -55 to 125 CD74HCT390E CD74HCT390M ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 HCT390M CD74HCT390M96 ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 HCT390M CD74HCT390MT ACTIVE SOIC D 16 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 HCT390M (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
CD74HCT390E 价格&库存

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