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74HC163D

Presettable synchronous 4-bit binary counter; synchronous reset

The 74HC163; 74HCT163 is a synchronous presettable binary counter with an internal look-head carry. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset to a HIGH or LOW. A LOW at the parallel enable input (PE) disables the counting action. It causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock. Preset takes place regardless of the levels at count enable inputs (CEP and CET). A LOW at the master reset input (MR) sets Q0 to Q3 LOW after the next positive-going transition on the clock input (CP). This action occurs regardless of the levels at input pins PE, CET and CEP. This synchronous reset feature enables the designer to modify the maximum count with only one external NAND gate. The look-ahead carry simplifies serial cascading of the counters. Both CEP and CET must be HIGH to count. The CET input is fed forward to enable the terminal count output (TC). The TC output thus enabled will produce a HIGH output pulse of a duration approximately equal to a HIGH output of Q0. This pulse can be used to enable the next cascaded stage. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

The CP to TC propagation delay and CEP to CP set-up time determine the maximum clock frequency for the cascaded counters according to the following formula:

fmax= (1) / (tP (max)(CP to TC) + tSU(CEP to CP) )

This product has been discontinued, click here for discontinuation information and replacement parts.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors

Features and benefits

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC163: CMOS level
    • For 74HCT163: TTL level
  • Synchronous counting and loading
  • 2 count enable inputs for n-bit cascading
  • Synchronous reset
  • Positive-edge triggered clock
  • 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

Applications

  • Television sets
  • Home-sound sets
  • Multimedia systems
  • All mains fed audio systems
  • Car audio (boosters)

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
74HC163DEnd of life2.0 - 6.0± 5.2CMOS17low-40~125835.241SO16

Package

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HC163D74HC163D,653
( 9337 145 40653 )
Discontinued / End-of-life74HC163D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECC
74HC163D,652
( 9337 145 40652 )
Discontinued / End-of-life74HC163DBulk Pack, CECC

Discontinuation information

Type numberOrderable part numberOrdering codeLast time buy dateLast time delivery dateReplacement productStatusComments
74HC163D74HC163D,6539337145406532021-06-302021-12-31No replacementFull withdrawal
74HC163D74HC163D,6529337145406522021-06-302021-12-31No replacementFull withdrawal

Quality, reliability & chemical content

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74HC163D74HC163D,65374HC163D11
74HC163D74HC163D,65274HC163D11
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74HC_HCT163Presettable synchronous 4-bit binary counter; synchronous resetData sheet2018-10-12
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
hchc Spice modelSPICE model2013-05-06
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

Support

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Models

File nameTitleTypeDate
hchc Spice modelSPICE model2013-05-06