DESCRIPTION:

The IDT49C460s are high-speed, low-power, 32-bit Error Detection and Correction Units which generate check bits on a 32-bit data field according to a modified Hamming Code and correct the data word when check bits are supplied.

FEATURES:

? Fast

Detect Correct

— IDT49C460E 10ns (max.) 14ns (max.)

— IDT49C460D 12ns (max.) 18ns (max.)

— IDT49C460C 16ns (max.) 24ns (max.)

— IDT49C460B 25ns (max.) 30ns (max.)

— IDT49C460A 30ns (max.) 36ns (max.)

— IDT49C460 40ns (max.) 49ns (max.)

? Low-power CMOS

— Commercial: 95mA (max.)

— Military: 125mA (max.)

? Improves system memory reliability

— Corrects all single bit errors, detects all double and some

triple-bit errors

? Cascadable

— Data words up to 64-bits

? Built-in diagnostics

— Capable of verifying proper EDC operation via software

control

? Simplified byte operations

— Fast byte writes possible with separate byte enables

? Functional replacement for 32- and 64-bit configurations of

the AM29C60 and AM29C660

? Available in PGA, PLCC and Fine Pitch Flatpack

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

? Standard Military Drawing #5962–88533