IDT7142SA20L48

HIGH -SPEED 2K ×8双端口静态对中断RAM HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS

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 by CE permits 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 550mW of power. Low-power LA versions offer battery backup data retention capability, with each Dual-Port typically consuming 200µW from a 2V battery.

FEATURES:

• High-speed access

  — Military: 25/35/55/100ns max.

  — Commercial: 25/35/55/100ns max.

  — Commercial: 20ns only in PLCC for 7132

• Low-power operation

  — IDT7132/42SA

   Active: 550mW typ.

   Standby: 5mW typ.

  — IDT7132/42LA

  Active: 550mW typ.

  Standby: 1mW typ.

• Fully asynchronous operation from either port

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

• On-chip port arbitration logic IDT7132 only

• BUSYoutput flag on IDT7132; BUSYinput on IDT7142

• Battery backup operation —2V data retention

• TTL-compatible, single 5V ±10% power supply

• Available in popular hermetic and plastic packages

• Military product compliant to MIL-STD, Class B

• Standard Military Drawing # 5962-87002

• Industrial temperature range –40°C to +85°C is available, tested to miliary electrical specifications