Am2950-50A

The Am2950-50A members of Advanced Micro Devices' Am2900 Family, are designed for use as parallel data I/O ports. Two eight-bit, back-to-back registers store data moving in both directions between two bidirectional, 3-state busses. On chip flag flip-flops, set automatically when a register is loaded, provide the handshaking signals required for demand-response data transfer. Considerable flexibility is designed into the Am29501 Am2951. Separate clock, Clock Enable and Three-State Out Enable si nls are rovided for each register, and edge-sensitive clear inputs are provided for each flag flip-flop. A number of these circuits can be used for wider IIO ports. Both inverting and non-inverting versions are available. 24mA output current sink capability, sufficient for most three-state busses, is provided by the Am2950/Am2951. The Am2950A and Am2951A feature AMD's ion-implanted micro-oxide (IMOXTM) processing. They are plug-in replacements for the Am2950A and Am2951A respectively but will be approximately 30% faster.

The distinctive characteristics of Am2950-50A can be summarized as (1)eight-bit, bidirectional I/O port with handshake- Two eight-bit, back-to-back registers store data moving in both direbtions between two bidirectional busses; (2)register full/empty flags- On-chip flag flip-flops provide data transfer handshaking signals; (3)24mA output current sink capabitity; (4)separate clock, clock enable and three-state output enabl for each register; (5)separate, edge-sensitive clear control for each flag flip-flop; (6)Fast - the Am2950A and Am2951A will be 25-30% faster than the Am2950 and Am2951.

The absolute maximum ratings of Am2950-50A are (1)storage temperature:-65 to +150°C; (2)(Ambient) temperature under bias:-55 to +125°C; (3)supply voltage to ground potential continuous: -05V to +70V; (4)DC voltage applied to outputs for high output state: -05V to +VCC max; (5)DC input voltage: -05V to +55V; (6)DC output current, into outputs: 30mA; (7)DC input current: -30mA to +50mA.