The SN74AS869 is a synchronous 8-bit up/down counter designed by Texas Instruments. It features internal carry look-ahead circuitry, allowing for high-speed cascading in counting applications. The counter operates synchronously, meaning all flip-flops are clocked simultaneously, which helps eliminate output counting spikes typically seen in asynchronous counters. It can be preset to any value between 0 and 255, and the load-input circuitry enables parallel loading of cascaded counters. The device includes two count-enable inputs (ENP and ENT) and a ripple-carry output (RCO), which facilitates cascading without additional gating. The counting direction is determined by the select inputs (S0, S1). The SN74AS869 is characterized for operation from 0¬8C to 70¬8C and is available in a 24-pin plastic dual in-line package (NT). This product is suitable for applications requiring reliable synchronous counting with programmable capabilities.
Synchronous 8-Bit Up/Down Counters 24-PDIP 0 to 70
Counter IC Binary Counter 1 Element 8 Bit Positive Edge 24-PDIP
Binary Counter, AS Series, Synchronous, Positive Edge Triggered, 8-Bit, Bidirectional, TTL, PDIP24
Manufacturer: Texas Instruments
Win Source Part Number: 1099456-SN74AS869NT
Packaging: Tube/Rail
Mounting: Through Hole
Logic Type: Binary Counter
Number of Elements: 1
Number of Bits per Element: 8
Trigger Type: Positive Edge
Direction: Up, Down
Reset: Synchronous
Timing: Synchronous
Count Rate: 45MHz
Categories: Integrated Circuits
Status: Obsolete(EOL)
Temperature Range - Operating: 0°C to 70°C
Case / Package: 24-PDIP
Supply Voltage - Operating: 4.5 V to 5.5 V
Popularity: Medium
Fake Threat In the Open Market: 38 pct.
Supply and Demand Status: Balance
IC BINARY COUNTER 8-BIT 24DIP
Counter IC Binary Counter 1 Element 8 Bit Positive Edge 24-PDIP
| Texas Instruments | DigiKey | Rochester Electronics | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|
| Product Category | Logic Counters | Logic Counters | Logic Counters | Logic Counters | Logic Counters | Logic Counters |
| Product Number | SN74AS869NT | 296-33822-5-ND | SN74AS869NT | 1099456-SN74AS869NT | SN74AS869NT | SN74AS869NT |
| Product Name | SN74AS869 Synchronous 8-Bit Up/Down Counters | Counters, Dividers | Logic - Logic - Counters, Dividers - SN74AS869NT | Integrated Circuits (ICs) - Logic - Counters, Dividers | Counters, Dividers | |
| Counter Category | Synchronous | Synchronous | Synchronous | |||
| Counter Direction | Bidirectional | Bidirectional | Bidirectional | |||
| Supply Voltage | 5V; 5.5 | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | |||
| Package Type | PDIP,SOIC | DIP; "24-DIP (0.300"", 7.62mm)" | DIP; DIP24 | DIP; PDIP; 24-PDIP | DIP; 24-DIP (0.300\", 7.62mm) | |
| Logic Family | AS | TTL |
