P4C198L-25PMB中文资料

P4C198/P4C198L, P4C198A/P4C198ALULTRA HIGH SPEED 16K x 4STATIC CMOS RAMS

FEATURES

Full CMOS, 6T Cell

High Speed (Equal Access and Cycle Times)– 10/12/15/20/25 ns (Commercial)– 12/15/20/25/35 ns (Industrial)

– 15/20/25/35/45 ns (Military)

Low Power Operation (Commercial/Military)

5V ± 10% Power Supply

Data Retention, 10 µA Typical Current from 2.0V

P4C198L/198AL (Military)

Output Enable & Chip Enable Control Functions– Single Chip Enable P4C198

– Dual Chip Enable P4C198A

Common Inputs and Outputs

Fully TTL Compatible Inputs and OutputsStandard Pinout (JEDEC Approved)– 24-Pin 300 mil DIP– 24-Pin 300 mil SOJ

– 28-Pin 350 x 550 mil LCC

DESCRIPTION

The P4C198/L and P4C198A/L are 65,536-bit ultra high-speed static RAMs organized as 16K x 4. Each devicefeatures an active low Output Enable control to eliminatedata bus contention. The P4C198/L also have an activelow Chip Enable (the P4C198A/L have two Chip Enables,both active low) for easy system expansion. The CMOSmemories require no clocks or refreshing and have equalaccess and cycle times. Inputs are fully TTL-compatible.The RAMs operate from a single 5V ± 10% tolerancepower supply. Data integrity is maintained with supply

voltages down to 2.0V. Current drain is typically 10 µAfrom a 2.0V supply.

Access times as fast as 12 nanoseconds are available,permitting greatly enhanced system operating speeds.CMOS is used to reduce power consumption to a low 715mW active, 193 mW standby.

The P4C198/L and P4C198A/L are available in 24-pin300 mil DIP and SOJ, and 28-pin 350 x 550 mil LCC

packages providing excellent board level densities.

FUNCTIONAL BLOCK DIAGRAMPIN CONFIGURATIONS

Document # SRAM113 REV A

1

Revised October 2005