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74HC193; 74HCT193

Presettable synchronous 4-bit binary up/down counter

The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock is pulsed while CPD is held HIGH, the device will count up. If the CPD clock is pulsed while CPU is held HIGH, the device will count down. Only one clock input can be held HIGH at any time to guarantee predictable behavior. The device can be cleared at any time by the asynchronous master reset input (MR); it may also be loaded in parallel by activating the asynchronous parallel load input (PL). The terminal count up (TCU) and terminal count down (TCD) outputs are normally HIGH. When the circuit has reached the maximum count state of 15, the next HIGH-to-LOW transition of CPU will cause TCU to go LOW. TCU will stay LOW until CPU goes HIGH again, duplicating the count up clock. Likewise, the TCD output will go LOW when the circuit is in the zero state and the CPD goes LOW. The terminal count outputs can be used as the clock input signals to the next higher order circuit in a multistage counter, since they duplicate the clock waveforms. Multistage counters will not be fully synchronous, since there is a slight delay time difference added for each stage that is added. The counter may be preset by the asynchronous parallel load capability of the circuit. Information present on the parallel data inputs (D0 to D3) is loaded into the counter and appears on the outputs (Q0 to Q3) regardless of the conditions of the clock inputs when the parallel load (PL) input is LOW. A HIGH level on the master reset (MR) input will disable the parallel load gates, override both clock inputs and set all outputs (Q0 to Q3) LOW. If one of the clock inputs is LOW during and after a reset or load operation, the next LOW-to-HIGH transition of that clock will be interpreted as a legitimate signal and will be counted. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

特性

  • Wide supply voltage range from 2.0 to 6.0 V

  • CMOS low power dissipation

  • High noise immunity

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

  • Input levels:

    • For 74HC193: CMOS level

    • For 74HCT193: TTL level

  • Synchronous reversible 4-bit binary counting

  • Asynchronous parallel load

  • Asynchronous reset

  • Expandable without external logic

  • Complies with JEDEC standards:

    • JESD8C (2.7 V to 3.6 V)

    • JESD7A (2.0 V to 6.0 V)

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Specified from -40 °C to +85 °C and -40 °C to +125 °C.

参数类型

Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC193DProduction2.0 - 6.0± 5.2CMOS20low-40~125661.023SO16
74HC193PWProduction2.0 - 6.0± 5.2CMOS20low-40~1251011.027TSSOP16
74HCT193DProduction4.5 - 5.5± 4TTL20low-40~125661.023SO16
74HCT193PWProduction4.5 - 5.5± 4TTL20low-40~1251011.027TSSOP16

封装

型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号,(订购码(12NC))
74HC193D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_653Active74HC193D74HC193D,653
( 9337 146 20653 )
74HC193PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHC19374HC193PW,118
( 9351 889 80118 )
74HCT193D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_653Active74HCT193D74HCT193D,653
( 9337 151 00653 )
74HCT193PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHCT19374HCT193PW,118
( 9352 830 88118 )

下表中的版本已停产。参见表 停产信息 了解更多信息。

型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号,(订购码(12NC))
74HC193D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_652Withdrawn / End-of-life74HC193D74HC193D,652
( 9337 146 20652 )

停产信息

型号可订购的器件编号,(订购码(12NC))最后一次购买日期最后一次交货日期替代产品状态备注
74HC193D9337146206522021-12-312022-06-3074HC193D
    74HC193PW9351889801122021-12-312022-06-3074HC193PW
      74HCT193D9337151006522021-12-312022-06-3074HCT193D
        74HCT193PW9352830881122018-12-312019-06-3074HCT193PW

          环境信息

          型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
          74HC193D74HC193D,65374HC193Dweek 30, 2004
          74HC193PW74HC193PW,11874HC193PWweek 10, 2005
          74HCT193D74HCT193D,65374HCT193Dweek 6, 2004
          74HCT193PW74HCT193PW,11874HCT193PWAlways Pb-free

          下表中的版本已停产。参见表 停产信息 了解更多信息。

          型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
          74HC193D74HC193D,65274HC193Dweek 30, 2004
          品质及可靠性免责声明

          文档 (11)

          文件名称标题类型日期
          74HC_HCT193Presettable synchronous 4-bit binary up/down counterData sheet2024-03-14
          AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
          hc19374HC193 IBIS modelIBIS model2019-01-31
          hct19374HCT193 IBIS modelIBIS model2022-10-11
          HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
          SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
          SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
          WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
          SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07
          SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-08
          SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

          支持

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          模型

          文件名称标题类型日期
          hc19374HC193 IBIS modelIBIS model2019-01-31
          hct19374HCT193 IBIS modelIBIS model2022-10-11

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