IDT7140LA

Features:

  ` High-speed access
      Commercial: 20/25/35/55/100ns (max.)
      Industrial: 25/55/100ns (max.)
      Military: 25/35/55/100ns (max.)
  ` Low-power operation
      IDT7130/IDT7140SA
          Active: 550mW (typ.)
          Standby: 5mW (typ.)
       IDT7130/IDT7140LA
         Active: 550mW (typ.)
         Standby: 1mW (typ.)
  ` MASTER IDT7130 easily expands data bus width to 16-ormore- bits using SLAVE IDT7140
  ` On-chip port arbitration logic (IDT7130 Only)
  ` BUSY output flag on IDT7130; BUSY input on IDT7140
  ` INT flag for port-to-port communication
  ` Fully asynchronous operation from either port
  ` Battery backup operation2V data retention (LA only)
  ` TTL-compatible, single 5V ±10% power supply
  ` Military product compliant to MIL-PRF-38535 QML
  ` Industrial temperature range (40°C to +85°C) is available for selected speeds
  ` Available in 48-pin DIP, LCC and Ceramic Flatpack, 52-pin PLCC, and 64-pin STQFP and TQFP
  ` Green parts available, see ordering information


Pinout




Specifications

Symbol	Rating	Commercial & Industria	Military	Unit
VTERM(2)	Terminal Voltage with Respectto GND	-0.5 to +7.0	0.5 to +7	V
TBIAS	TemperatureUnder Bias	-55 to +125	65 to +135	V
TSTG	StorageTemperature	-65 to +150	65 to +150
IOUT	DC Output Current	50	150	mA

NOTES:
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.
2. V_TERM must not exceed Vcc + 10% for more than 25% of the cycle time or 10ns maximum, and is limited to 20mA for the period of V_TERM Vcc + 10%.


Description

The IDT7140LA are high-speed 1K x 8 Dual-Port Static RAMs. The IDT7130 is designed to be used as a stand-alone 8-bit Dual-Port RAM or as a "MASTER" Dual-Port RAM together with the IDT7140 "SLAVE" Dual-Port in 16-bit-or-more word width systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 16-ormore- bit memory system applications results in full-speed, errorfree operation without the need for additional discrete logic.

Both devices of the IDT7140LA provide two independent ports with separate control,  address, and I/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 tech-nology, these devices typically operate on only 550mW of power. Lowpower (LA) versions offer battery backup data retention capability, with each Dual-Port typically consuming 200W from a 2V battery.

The IDT7140LA devices are packaged in 48-pin sidebraze or plastic DIPs, LCCs, flatpacks, 52-pin PLCC, and 64-pin TQFP and STQFP. Military grade products are 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.