P4C1257L55CC datasheet(1/11 Pages) PYRAMID

Part #	P4C1257L55CC

Description	ULTRA HIGH SPEED 256K x 1 STATIC CMOS RAMS

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Manufacturer	PYRAMID [Pyramid Semiconductor Corporation]

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Document # SRAM137 REV 01

Revised June 2013

P4C1257/P4C1257L

ULTRA HIGH SPEED 256K x 1

STATIC CMOS RAMS

FEATURES

Full CMOS

High Speed (Equal Access and Cycle Times)

– 12/15/20/25 ns (Commercial)

– 12/15/20/25 ns (Industrial)

– 25/35/45/55/70 ns (Military)

Single 5V±10% Power Supply

Data Retention with 2.0V Power Supply

(P4C1257L)

Separate Data I/O

Three-State Output

Fully TTL Compatible Inputs and Outputs

Standard Pinout (JEDEC Approved)

– 24-Pin 300 mil DIP, SOJ

– 28-Pin 350x550 mil LCC

– 28-Pin Flatpack

FUnCTIOnAL BLOCk DIAgRAM

PIn COnFIgURATIOnS

DIP (P4, C4)

SOJ (J4)

LCC (L5)

DESCRIPTIOn

The P4C1257/P4C1257L are 256Kx1-bit ultra high-speed

static RAMs. The CMOS memories require no clocks or

refreshing and have equal access and cycle times. The

RAMs operate from a single 5V ± 10% tolerance power

supply. Data integrity is maintained for supply voltages

down to 2.0V, typically drawing 10µA.

Access times as fast as 12 nanoseconds are available,

greatly enhancing system speeds.

The P4C1257/P4C1257L are available in 24-pin 300 mil

DIP and SOJ, 28-pin LCC and Flatpack packages, provid-

ing excellent board level densities.

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