P4C1681, P4C1682 ULTRA HIGH SPEED 4K x 4 STATIC CMOS RAMS
FEATURES
Full CMOS, 6T Cell
High Speed (Equal Access and Cycl...
P4C1681, P4C1682 ULTRA HIGH SPEED 4K x 4 STATIC
CMOS RAMS
FEATURES
Full
CMOS, 6T Cell
High Speed (Equal Access and Cycle Times) – 12/15/20/25 ns (Commercial) – 20/25/35ns (Military)
Low Power Operation
Single 5V ± 10%Power Supply
Separate Inputs and Outputs – P4C1681 Input Data at Outputs during Write – P4C1682 Outputs in High Z during Write
Fully TTL Compatible Inputs and Outputs
Standard Pinout (JEDEC Approved) – 24-Pin 300 mil DIP – 24-Pin 300 mil SOIC – 24-Pin 300 mil SOJ – 24-Pin Solder Seal Flat Pack – 28-Pin LCC (450 mil x 450 mil)
DESCRIPTION
The P4C1681 and P4C1682 are 16,384-bit (4K x 4) ultra high speed static RAMs similar to the P4C168, but with separate data I/O pins. The P4C1681 features a transparent write operation; the outputs of the P4C1682 are in high impedance during the write cycle. All devices have low power standby modes. The RAMs operate from a single 5V ± 10% tolerance power supply.
Access times as fast as 12 nanoseconds are available, permitting greatly enhanced system operating speeds. .
CMOS is used to reduce power consumption.
The P4C1681 and P4C1682 are available in 24-pin 300 mil DIP, SOIC, Solder Seal Flatpack, and SOJ packages, as well as a 28-pin LCC package, providing excellent board level densities.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
DIP (P4,C4), SOIC (S4), SOJ (J4) SOLDER SEAL FLAT PACK (FS-1)
LCC (L5-1)
Document # SRAM109 REV A Revised October 2005
1
P4C1681, P4C1682
MAXIMUM RATINGS1
Symbol
Parameter
VCC Power Supply...