P4C1257 Datasheet, PDF (1/11 Pages) Pyramid Semiconductor Corporation – 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)
P4C1257/P4C1257L
ULTRA HIGH SPEED 256K x 1
STATIC CMOS RAMS
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
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.
Functional Block Diagram
Pin ConfigurationS
Document # SRAM137 REV 01
DIP (P4, C4)
SOJ (J4)
LCC (L5)
Revised June 2013