High Performance Impact PAL Circuits 24-Pin PDIP Tube

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 further reduction in board space. All of the register outputs are set to a low level during power-up. 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.

Low-Power, High-Performance

• Reduced I_CC of 105 mA Max
• f_max:
  Without Feedback . . . 33 MHz Min
  With Feedback . . . 25 MHz Min
• t_pd . . . 25 ns Max

Direct Replacement for PAL20L8A, PAL20R4A, PAL20R6A, PAL20L8A, with
at Least 50% Reduction in Power

Preload Capability on Output Registers Simplifies Testing

Power-Up Clear on Registered Devices (All Register Outputs are Set Low,
but Voltage Levels at the
Output Pins Go High)

Package Options Include Plastic Chip Carriers in Addition to Plastic and Ceramic DIPs

Dependable Texas Instruments Quality and Reliability