8412904LA中文资料德州仪器数据手册PDF规格书

High-Performance: fmax (w/o feedback)

TIBPAL20R’ -15C Series . . . 45 MHz

TIBPAL20R’ -20M Series . . . 41.6 MHz

High-Performance . . . 45 MHz Min

Reduced ICC of 180 mA Max

Functionally Equivalent, but Faster Than

PAL20L8, PAL20R4, PAL20R6, PAL20R8

Power-Up Clear on Registered Devices (All

Register Outputs are Set Low, but Voltage

Levels at the Output Pins Go High)

Preload Capability on Output Registers

Simplifies Testing

Package Options Include Both Plastic and

Ceramic Chip Carriers in Addition to Plastic

and Ceramic DIPs

description

These programmable array logic devices feature

high speed and functional equivalency when

compared with currently available devices. These

IMPACT™ circuits combine the latest Advanced

Low-Power Schottky technology with proven

titanium-tungsten fuses to provide reliable,

high-performance substitutes for conventional

TTL logic. Their easy programmability allows for

quick design of custom functions and typically

results in a more compact circuit board. In

addition, chip carriers are available for futher

reduction in board space.

Extra circuitry has been provided to allow loading of each register asynchronously to either a high or low state.

This feature simplifies testing because the registers can be set to an initial state prior to executing the test

sequence.

The TIBPAL20’ C series is characterized from 0°C to 75°C. The TIBPAL20’ M series is characterized for

operation over the full military temperature range of −55°C to 125°C.