TC74AC257P,258P/F/FN is a high-performance CMOS switch integrated circuit produced by Toshiba, with high speed, low power consumption, high noise immunity and other features.
The TC74AC257 and TC74AC258 are advanced high‑speed CMOS multiplexers fabricated with silicon‑gate, double‑layer metal C2MOS technology. Each device contains four independent 2‑channel multiplexers with common SELECT and OUTPUT‑ENABLE pins, offering both non‑inverting (TC74AC257) and inverting (TC74AC257F, TC74AC258F) options. The parts feature protection against static discharge and can drive 50 Ω transmission lines.
The devices are offered in several packages, including DIP‑16 (2.54 mm pitch), SOP‑16 (1.27 mm pitch) and SO‑L‑16 (1.27 mm pitch), with typical weights ranging from 0.13 g to 1.00 g. Key electrical characteristics include a typical propagation delay of 3.6 ns, power dissipation up to 500 mW (DIP) or 180 mW (SOP), a supply voltage range of 2.0‑5.5 V, and an operating temperature range of –40 °C to 85 °C.
| Typical propagation delay (tpd) | 3.6 ns (typ.) at Vcc = 5 V |
|---|---|
| Power dissipation (Pp) | 500 mW (DIP) / 180 mW (SOP) |
| Supply voltage (operating) | 2.0 V to 5.5 V |
| Operating temperature range | –40 °C to 85 °C |
| Package weight (DIP‑16) | 1.00 g (typ.) |
The typical propagation delay is 3.6 ns at a 5 V supply.
The TC74AC257 is non‑inverting, while the TC74AC257F and TC74AC258F are inverting versions.