IDT7142SA20CB中文資料IDT數(shù)據(jù)手冊PDF規(guī)格書

Description

The IDT7132/IDT7142 are high-speed 2K x 8 Dual-Port Static RAMs. The IDT7132 is designed to be used as a stand-alone 8-bit Dual-Port RAM or as a “MASTER” Dual-Port RAM together with the IDT7142 “SLAVE” Dual-Port in 16-bit-or-more word width systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 16-or-more-bit memory system applications results in full-speed, error-free operation without the need for additional discrete logic.

Both devices provide two independent ports with separate control, address, and l/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power down feature, controlled byCEpermits the on-chip circuitry of each port to enter a very low standby power mode.

Fabricated using IDT’s CMOS high-performance technology, these devices typically operate on only 325mW of power. Low-power (LA) versions offer battery backup data retention capability, with each Dual Port typically consuming 200μW from a 2V battery.

The IDT7132/7142 devices are packaged in a 48-pin sidebraze or plastic DIPs, 48-pin LCCs, 52-pin PLCCs, and 48-lead flatpacks. Military grade product is manufactured in compliance with the latest revision of MIL-PRF-38535 QML, making it ideally suited to military temperature applications demanding the highest level of performance and reliability.

Features

◆ High-speed access

– Commercial: 20/25/35/55/100ns (max.)

– Industrial: 25ns (max.)

– Military: 25/35/55/100ns (max.)

◆ Low-power operation

– IDT7132/42SA

Active: 325mW (typ.)

Standby: 5mW (typ.)

– IDT7132/42LA

Active: 325mW (typ.)

Standby: 1mW (typ.)

◆ MASTER IDT7132 easily expands data bus width to 16-or-more bits using SLAVE IDT7142

◆ On-chip port arbitration logic (IDT7132 only)

◆ BUSY output flag on IDT7132; BUSY input on IDT7142

◆ Battery backup operation —2V data retention (LA only)

◆ TTL-compatible, single 5V ±10 power supply

◆ Available in 48-pin DIP, LCC and Flatpack, and 52-pin PLCC packages

◆ Military product compliant to MIL-PRF-38535 QML

◆ Industrial temperature range (–40°C to +85°C) is available for selected speeds