74F189A

INTEGRATED CIRCUITS 74F189A 64-bit TTL bipolar RAM, inverting (3-State) Product specification IC15 Data Handbook 1990 Feb 23 Philips Semiconductors Philips Semiconductors 64-bit TTL bipolar RAM, inverting (3-State) Product specification 74F189A FEATURES High speed performance Replaces 74F189 Address access time: 8ns max vs 28ns for 74F189 Power dissipation: 4.3mW/bit Schottky clamp TTL One chip enable Inverting outputs (for non-inverting outputs see 74F219A) 3-State outputs 74F189A in 150 mil wide SO is preferred options for new designs are fully decoded on chip. The outputs are in high impedance state whenever the chip enable (CE) is high. The outputs are active only in the READ mode (WE = high) and the output data is the complement of the stored data. TYPE 74F189A TYPICAL ACCESS TIME 5.0ns TYPICAL SUPPLY CURRENT ( TOTAL) 55mA DESCRIPTION The 74F189A is a high speed, 64-bit RAM organized as a 16-word by 4-bit array. Address inputs are bu...