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 IDT49C460B 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 IDT49C460B 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 IDT49C460B 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 is manufactured in compliance with the latest revision of IDT49C460B, Class B, making it ideally suited to military temperature applications demanding the highest level of performance and reliability.
IDT49C460B Data Sheet
