Part Number : WS128K32-XG4TX
Function : 128K x 32 SRAM module, SMD 5962-93187 & 5962-95595
Package : 68 Pin HIP Type
Maker : Microsemi Corporation
Pinouts : 
Description :
1. Access times of 70, 85, 100, 120ns
2. Organized as 128Kx32, User Configurable as 256K x 16 or 512K x 8
3. 5 Volt Power Supply
4. Low Power CMOS
5. TTL Compatible inputs and Outputs
6. All devices are upgradeable to 512K x 32
Datasheet PDF Download : 
Others datasheet of same file :
WS128K32-XG1UX, WS128K32-XG2UX, WS128K32XG4TX,
WS128K32N, WS128K32N-100G1UC