15 ns EE PLD — 22V10 architecture in a 24-TSSOP footprint
The Microchip ATF22V10CQ-15XI is a 22V10-series electrically erasable PLD with a 15 ns propagation delay and 10 macrocells, packaged in a 24-TSSOP (0.173", 4.40mm width) surface-mount package. It operates from a 5V supply rail — the same logic level as legacy 5V TTL/CMOS systems — and is electrically reprogrammable, so no UV eraser is needed for code iterations during bring-up or field updates.
15 ns speed grade — timing closure for combinatorial and registered logic
The 15 ns propagation delay sets the maximum combinatorial path delay. The 10 macrocells can each be configured as registered or combinatorial outputs. The EE PLD architecture means the configuration is stored in EEPROM cells — no battery backup required, and the pattern persists across power cycles. Programming is done via standard PLD programmers (e.g. Data I/O, BP Microsystems) that support the 22V10 JEDEC fuse map.
No official successor or direct pin-compatible replacement is listed on the record. The 24-TSSOP package and 5V logic family mean any replacement candidate must match the footprint and supply voltage; the 22V10 architecture is a standard JEDEC pinout, so other 22V10 devices from different manufacturers (e.g. Lattice, Cypress) may be electrically compatible but require separate qualification.
5V logic, surface-mount 24-TSSOP — board integration notes
The 24-TSSOP package has a 0.173" body width (4.40mm) with fine-pitch leads — typical pad width 0.25mm, pitch 0.65mm. The 5V supply rail must be decoupled close to the VCC pin (pin 24) with a 0.1 µF ceramic capacitor; the GND pin (pin 12) should have a low-inductance return path to the ground plane. The device is rated for commercial/industrial temperature ranges typical of the 22V10 family (though the exact range is not specified in this entry).