SN54LS169B, SN54S169 SN74LS169B, SN74S169 is a 4-bit synchronous up/down counter produced by Texas Instruments.
The document details the SN54LS169B, SN54S169, SN74LS169B, and SN74S169 synchronous 4-bit up/down binary counters. These devices feature fully synchronous operation where all flip-flops are clocked simultaneously to eliminate output spikes associated with asynchronous counters. They include an internal carry look-ahead circuitry designed for cascading in high-speed counting applications without additional gating.
| Supply voltage (Vcc) | 4.5 to 5.5 V |
|---|---|
| Operating temperature range | -55°C to 125°C |
| Number of bits | 4-bit |
The maximum clock frequency for the SN74LS169B is 35 MHz.
This device is a synchronous 4-bit up/down binary counter.