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 #596288533 Pinout
Description The IDT49C460D 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. The IDT49C460s are performance-enhanced functional replacements for 32-bit versions of the 2960. When performing a read operation from memory, the IDT49C460s will correct 100% of all single bit errors and will detect all double bit errors and some triple bit errors.
The IDT49C460D are easily cascadable to 64-bits. Thirtytwo- bit systems use 7 check bits and 64-bit systems use 8
check bits. For both configurations, the error syndrome is made available.
The IDT49C460D incorporate two built-in diagnostic modes. Both simplify testing by allowing for diagnostic data to be entered into the device and to execute system diagnostics functions.
They are fabricated using a CMOS technology designed for high-performance and high-reliability. The devices are packaged in a 68-pin ceramic PGA, PLCC and Ceramic Quad Flatpack.
Military grade product of the IDT49C460D is manufactured in compliance with the latest revision of MIL-STD-883, Class B, making it ideally suited to military temperature applications demanding the highest level of performance and reliability.
IDT49C460D Data Sheet
