MC74AC161: Synchronous Presettable Binary Counter
The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high-speed synchronous modulo-16 binary counters. They are synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The MC74AC161/74ACT161 has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74AC163/ 74ACT163 has a Synchronous Reset input that overrides counting and parallel loading and allows the outputs to be simultaneously reset on the rising edge of the clock.
Features- Synchronous Counting and Loading
- High-Speed Synchronous Expansion
- Typical Count Rate of 125 MHz
- Outputs Source/Sink 24 mA
- ACT161 and ACT163 Have TTL Compatible Inputs
- These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.
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Simulation Models (4)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| SOIC 16 LEAD | 751B-05 (38.2kB) | K |
Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| MC74AC161DG | Active | Pb-free
Halide free | SOIC-16 | 751B-05 | 1 | Tube | 48 | $0.2267 |
| MC74AC161DR2G | Active | Pb-free
Halide free | SOIC-16 | 751B-05 | 1 | Tape and Reel | 2500 | $0.2267 |
Specifications
| Product | Type | VCC Min (V) | VCC Max (V) | tpd Max (ns) | PD Max (W) | IO Max (mA) |
|---|
| MC74AC161DG | Counter | 2 | 6 | 9.5 | 0.35 | 24 |
| MC74AC161DR2G | Counter | 2 | 6 | 9.5 | 0.35 | 24 |
