P4C148, P4C149 ULTRA HIGH SPEED 1K x 4 STATIC CMOS RAMS FEATURES Full CMOS, 6T Cell High Speed (Equal Access and Cycle Times) – 10/12/15/20/25/35/45/55 ns (Commercial) – 15/20/25/35/45/55 ns Low Power Operation Single 5V ± 10% Power Supply DESCRIPTION The P4C148 and P4C149 are 4,096-bit ultra high-speed static RAMs organized as 1K x 4.
Both devices have common input/output ports.
The P4C148 enters the standby mode when the chip enable (CE) goes HIGH; with CMOS input levels, power consumption is extremely low in this mode.
The P4C149 features a fast chip select capability using CS.
The CMOS memories require no clocks or refreshing, and have equal access and cycle times.
Inputs are fully TTL-...

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