DESCRIPTION

The IDT49C465/A is a 32-bit, two-data bus, Flow-thruEDC unit. The chip provides single-error correction and two and three bit error detection of both hard and soft memory errors. It can be expanded to 64-bit widths by cascading 2 units, without the need for additional external logic. The Flow thruEDC has been optimized for speed and simplicity of control.

FEATURES

• 32-bit wide Flow-thruEDC unit, cascadable to 64 bits

• Single-chip 64-bit Generate Mode

• Separate system and memory buses

• On-chip pipeline latch with external control

• Supports bidirectional and common I/O memories

• Corrects all single-bit errors

• Detects all double-bit errors, some multiple-bit errors

• Error Detection Time — 12ns

• Error Correction Time — 14ns

• On chip diagnostic registers.

• Parity generation and checking on system data bus

• Low power CMOS — 100mA typical at 20MHZ

• 144-pin PGA and PQFP packages

• Military product compliant to MIL-STD 883, Class B