Details, datasheet, quote on part number: PDM4M4060S12M
CategoryMemory => SRAM => Modules => 256 KB
Description256kx32 CMOS Static RAM Module
CompanyIXYS Corporation
DatasheetDownload PDM4M4060S12M datasheet
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Features, Applications

High-density 8 megabit Static RAM module) Low profile 72-lead SIMM and Angled SIMM (Single In-line Memory Module) Very fast access time: 10 ns (max.) Surface mounted plastic components on an epoxy laminate (FR-4) substrate Single 5V (10%) power supply Multiple VSS pins and decoupling capacitors for maximum noise immunity Inputs/outputs directly TTL compatible

The PDM4M4060 is packaged a 72-lead SIMM (Single In-line Memory Module). The SIMM configuration allows 72 leads to be placed on a package 4.25" long and 0.35" wide. At only 0.650" high, this low-profile package is ideal for systems with minimum board spacing. The SIMM configuration allows use of angled sockets to reduce the effective module height further. The Angled SIMM configuration allows 72 leads to be placed on a package 4.255" long and 0.35" wide. At only 0.680" high, this low-profile package is ideal for systems with minimum board spacing. All inputs and outputs of the PDM4M4060 are TTL compatible and operate from a single 5V supply. Full asynchronous circuitry requires no clock or refresh for operation and provides equal access and cycle times for ease of use. Four identification pins (PD3-PD0) are provided for applications in which different density versions of the module are used. In this way, the target system can read the respective levels PD3-PD0 to determine a 256K depth.


The x 32 static RAM module constructed on an epoxy laminate (FR-4) substrate using eight x 4 static RAMs in plastic SOJ packages. Availability of four chip select lines (one for each of two RAMs) provides byte access. The PDM4M4060 is available with access times as fast 15 ns with minimal power consumption.

Data Inputs/Outputs Addresses Chip Selects Write Enable Output Enable Depth Identification Power Ground No Connect

NOTE: 1. Pins 4, 5, and 7 (PD3-PD0) are read by the user to determine the density of the module. PD0, PD1 reads VSS and PD2, PD3 reads OPEN then the module has a 256K depth.

Mode Deselect/ Power-down Read Write Deselect

Symbol VTERM TBIAS TSTG TA PT IOUT Rating Terminal Voltage with Respect to VSS Temperature Under Bias Storage Temperature Operating Temperature Power Dissipation DC Output Current Com'l. 1.0 50 Ind. 1.0 50 Unit W mA

NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Symbol VCC VSS Commercial Parameter Supply Voltage Supply Voltage Ambient Temperature Min. 4.75 0 Typ. 0 25 Max. 0 70 Unit V C


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