Product Summary

The AM27S21D is a schottky TTL programmable read-only memory. The AM27S21D has three-state outputs, compatible with low power schottky bus standards capable of satisfying the requirements of a variety of microprogrammable controls, mapping functions, code conversion, or logic replacement.

Parametrics

AM27S21D absolute maximum ratings: (1)Storage Temperature: –65℃ to +150℃; (2)Ambient Temperature with Power Applied: –55℃ to +125℃; (3)Supply voltage: -0.5 to 7.0V; (4)DC voltage applied to outputs: -0.5 to +VCC max; (5)DC voltage applied to outputs during programming: 21V; (6)Output current into outputs during programming: 250mA; (7)DC input voltage: -0.5 to +5.5V; (8)DC input current: -30mA to +5mA.

Features

AM27S21D features: (1)High speed; (2)Highly reliable, ultra-fast programming platinum-silicide fuses; (3)High programming yield; (4)Low-current PNP inputs; (5)High-current open-collector and three-state outputs; (6)Fast chip select.

Diagrams

AM27S21D pin connection