SCLS404E is a 4-bit synchronous binary counter designed for 2V to 5.5V voltage operation. It features internal look-ahead for fast counting, cascading output, and support for mixed-mode voltage operation.
The SN54LV161A and SN74LV161A are 4‑bit synchronous binary counters that operate from 2 V to 5.5 V supply voltage. They feature internal carry look‑ahead, partial‑power‑down mode and ESD protection up to 2000 V HBM. The document provides ordering information, functional description, electrical characteristics, timing requirements and mechanical data.
Key sections include a description of the synchronous operation, recommended operating conditions, absolute maximum ratings, package dimensions and an important notice on product availability and warranty.
| Recommended supply voltage | 2 V to 5.5 V |
|---|---|
| Maximum toggle time at 5 V | 9.5 ns |
| ESD protection (Human‑Body Model) | 2000 V |
The maximum toggle time is 9.5 ns when powered at 5 V.