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.

Features and benefits

  • 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 standard no. 7A
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C

Parametrics

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
74HCT193DB
NRND
Not for design in4.5 - 5.5+/- 4.0TTL20low-40~12514842.0SSOP16
74HCT193PWProduction4.5 - 5.5± 4TTL20low-40~1251011.027TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC193D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC193D74HC193D,653
( 9337 146 20653 )
Bulk Pack, CECCActive74HC193D74HC193D,652
( 9337 146 20652 )
74HC193PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC19374HC193PW,118
( 9351 889 80118 )
Bulk PackActiveHC19374HC193PW,112
( 9351 889 80112 )
74HCT193D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT193D74HCT193D,653
( 9337 151 00653 )
Bulk Pack, CECCActive74HCT193D74HCT193D,652
( 9337 151 00652 )
74HCT193DB
NRND

SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT19374HCT193DB,118
( 9351 897 30118 )
74HCT193PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT19374HCT193PW,118
( 9352 830 88118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HCT193DB
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Bulk PackWithdrawn / End-of-lifeHCT19374HCT193DB,112
( 9351 897 30112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HCT193DB9351897301122018-12-312019-06-3074HCT193DB
    74HCT193PW9352830881122018-12-312019-06-3074HCT193PW

      Quality, reliability & chemical content

      Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
      74HC193D74HC193D,65374HC193Dweek 30, 200484.96.621.51E811
      74HC193D74HC193D,65274HC193Dweek 30, 200484.96.621.51E811
      74HC193PW74HC193PW,11874HC193PWweek 10, 200584.96.621.51E811
      74HC193PW74HC193PW,11274HC193PWweek 10, 200584.96.621.51E811
      74HCT193D74HCT193D,65374HCT193Dweek 6, 200484.96.621.51E811
      74HCT193D74HCT193D,65274HCT193Dweek 6, 200484.96.621.51E811
      74HCT193DB
      NRND
      74HCT193DB,11874HCT193DBweek 12, 200511
      74HCT193PW74HCT193PW,11874HCT193PWAlways Pb-free84.96.621.51E811

      The variants in the table below are discontinued. See the table Discontinuation information for more information.

      Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
      74HCT193DB74HCT193DB,11274HCT193DBweek 12, 200511
      Quality and reliability disclaimer

      Documentation (12)

      File nameTitleTypeDate
      74HC_HCT193Presettable synchronous 4-bit binary up/down counterData sheet2017-03-16
      AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
      hc19374HC193 IBIS modelIBIS model2019-01-31
      HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
      SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
      SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm bodyPackage information2020-04-21
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
      SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT338-1plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyPackage information2020-04-21

      Support

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      Models

      File nameTitleTypeDate
      hc19374HC193 IBIS modelIBIS model2019-01-31

      Ordering, pricing & availability

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