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The 54AC16822, 54ACT16822, 74AC16822 and 74ACT16822 are 20‑bit D‑type flip‑flops featuring three‑state outputs. Each device consists of two 10‑bit sections that store the inverse of the data present at the D inputs on the rising edge of the clock and present it on the Q outputs when enabled.
These parts are offered in Texas Instruments’ shrink small‑outline package (SSOP) with 25‑mil center‑to‑center pin spacing, providing a higher I/O pin count than a standard SSOP while keeping the same PCB area. The AC versions have CMOS‑compatible input thresholds, the ACT versions have TTL‑compatible thresholds, and they are qualified over military‑grade temperature ranges.
| Device type | 20‑bit D‑type flip‑flop with 3‑state outputs |
|---|---|
| Input threshold compatibility | CMOS‑compatible for AC versions, TTL‑compatible for ACT versions |
| Operating temperature range (54 series) | -65 °C to 126 °C |
They are 20‑bit D‑type flip‑flops with three‑state outputs, each composed of two 10‑bit sections.
The AC versions have CMOS‑compatible input thresholds, while the ACT versions have TTL‑compatible thresholds.