74LS169 Synchronous 4-Bit Up/Down Binary Counter IC

74LS169 Synchronous 4-Bit Up/Down Binary Counter IC

The ‘LS169B and ‘S169 are 4-bit binary counters. The 74LS169 features an internal carry look-ahead for cascading in high speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. These counters are fully programmable; that is the outputs may each be preset to either level. The 74LS92 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL.

What is a Binary Counter?

A Binary Counter is a serial digital counter that counts ten digits. it resets for every new clock input. As it can go through 10 unique combinations of output, it is also called as “Decade counter”. A binary counter can count 0000, 0001, 0010, 1000, 1001, 1010, 1011, 1110, 1111, 0000, and 0001 and so on. A 4 bit binary counter will act as a decade counter by skipping any six outputs out of the 16 (24) outputs.

74LS169 Pinout

74LS169 Pin Configuration

Pin NoPin NameDescription
1U/D’Up-Down Count Control Input
2CLKClock Pulse Input
3AParallel Data Input A
4BParallel Data Input B
5CParallel Data Input C
6DParallel Data Input D
7ENP’Active Low Count Enable Parallel Input
9LOAD’Active low parallel load enable input
10ENT’Active Low Count Enable Trickle Input
11QDFlip-Flop Output D
12QCFlip-Flop Output C
13QBFlip-Flop Output B
14QAFlip-Flop Output A
15RCO’Active low Terminal Count Output
16VCCChip supply Voltage

74LS169 Features & Specifications

  • No. of Bits: 4
  • Typical Operating Voltage: 5V
  • Output type: CMOS
  • Operating Voltage Range: 4.5V to 5.5V
  • Output current when high: -0.4mA
  • Output current when low: 8mA
  • CKB and CKA input clock frequency: 32MHz and 16MHz resp.
  • CKA and CKB pulse width: 15nS and 30nS resp.
  • Programmable Look-Ahead Up/Down Binary Counter
  • Fully Synchronous Operation
  • Internal Look-Ahead
  • Carry Output for Cascading
  • Standard TTL Switching Voltages
  • Available in 14-pin PDIP, GDIP, PDSO packages
  • Function: Counter
  • Product type: Binary
  • Rating: Catalog


  • Astable frequency divider or counter circuit
  • Timing related applications
  • They are also used in digital devices such as digital clocks, electronic meters, and other electronic devices that display numerical information.


Write a review

Please login or register to review
  • Views: 2783
  • Product Code: 74LS169
  • Availability: In Stock
  • KES 100.00

Tags: 74LS169, Synchronous 4-Bit Up/Down Binary Counter, 74169, 74HC169

Model: 6LR61Size: 9vJacket: Aluminium Foil batteryCompliance: CE ROHSCapacity: 270ohm,24h/d,720minut..
KES 150.00 KES 120.00
Control the flow of fluid using the flow of electrons! This liquid valve would make a great addition..
KES 3,000.00 KES 2,200.00
The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The s..
KES 650.00 KES 550.00
Need some indicators? We are big fans of these diffused red LEDs, in fact we use them exclusively in..
KES 100.00 KES 40.00
The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give ..
KES 300.00 KES 250.00
OverviewSensitive to flame spectrumFeatures wide range voltage comparator LM393Adjustable sensitivit..
KES 200.00 KES 150.00

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.