This document describes a 20-bit D-type flip-flop with 3-state outputs. It utilizes the Widebus family technology and features inputs that are compatible with TTL or CMOS voltage levels. It is suitable for high-speed layout and has high immunity to switching noise. The product consists of two 10-bit sections with separate control signals.
The 54AC16822, 54ACT16822, 74AC16822 and 74ACT16822 are 20‑bit D‑type flip‑flops with three‑state outputs, offered in shrink small‑outline (SSOP) and fine‑pitch ceramic flat packages. Inputs are compatible with TTL or CMOS voltage levels, and the devices provide high‑speed, low‑noise operation suitable for wide‑bus applications.
Each flip‑flop section stores the inverse of the data present at its D inputs on the rising edge of the clock and presents it on the Q outputs when the output enable is low. The document also contains product‑preview notices, warranty statements, and safety warnings regarding use in critical applications.
| Device type | 20‑bit D‑type flip‑flops with 3‑state outputs |
|---|---|
| Package types | Shrink Small‑Outline 300‑mil (SSOP) and 380‑mil Fine‑Pitch Ceramic Flat Packages |
| Input voltage compatibility | TTL‑ or CMOS‑compatible |
| Latch‑up immunity | 500 mA typical at 125 °C |
| Temperature range (54 series) | ‑55 °C to 125 °C |
| Temperature range (74 series) | ‑40 °C to 85 °C |
They are offered in shrink small‑outline (SSOP) packages and 380‑mil fine‑pitch ceramic flat packages.
The devices provide a typical latch‑up immunity of 500 mA at 125 °C.
The ’ACT16822 version has TTL‑compatible input thresholds, while the ’AC16822 version has CMOS‑compatible thresholds.
The 54 series is qualified from –55 °C to 125 °C, and the 74 series from –40 °C to 85 °C.