XC7272

The XC7272 is a second-generation high density programmable logic device that combines the classical features of the PAL-like EPLD architecture with innovative systems-oriented logic enchancement. This favors the implementation of fast state machines, large synchronous counters and fast arithemic, as well as multi-level general-purpose logic mapping, interconnect routing, and resource utilization.Performance, therefore, remains invariant between design iterations.The propagation delay through interconnect and logic is constant for any function impelmented in any one of the output macrocells.

Features of of the XC7272 are:(1)second-generation high density programmable logic device; (2)UV-erasable CMOS EPROM technology; (3)each function block contians a programmbale AND-array with up to 24 complementary inputs, providing up to 17 product terms per macrocell; (4)indentical timing for all interconnect paths and for all macrocell logic paths; (5)I/O pin is usable as input when macrocell is buried; (6)68-pin and 84-pin leaded chip carrier packages and 84-pin Pin-Grid-Array packages.

The absolute maximum ratings of the XC7272 can be summarized as:(1): supply voltage relative to GND(Vcc) is -0.5 V to 7.0 V; (2): input voltage with respect to GND(VIN) is -0.5 V to 7.0 V; (3): voltage applied to 3-state output(VTS) is -0.5 V to 7.0 V; (4): storage temperature(Tstg) is -65 to +150; (5): maximum soldering temperature(TSOL) is 260(10s at 1/16 pin=1.5mm).

The recommended operating conditions of the XC7272 can be summarized as:(1): supply voltage relative to GND commercial is 4.75 V min and 5.25 V max(Ta is 0 to 70); (2): supply voltage relative to GND industrial is 4.5 V min and 5.5 V max(Ta is -40 to 85); (3): supply voltage relative to GND military is 4.5 V min and 5.5 V max(Ta is -40 to 85); (4): high-level input voltage(VIH) is 2.0 V min and Vcc+0.5 V max; (5): low-level input voltage(VIL) is 0 V min and 0.8 V max.