TIBPAL22V10-15BC Datasheet, PDF (2/17 Pages) Texas Instruments – HIGH-PERFORMANCE IMPACT-X E PROGRAMMABLE ARRAY LOGIC CIRCUITS

TIBPAL22V10-15BC
HIGH-PERFORMANCE IMPACT-X ™ PROGRAMMABLE ARRAY LOGIC CIRCUITS
SRPS009A – D3356, OCTOBER 1989 – REVISED JUNE 1990
description (continued)
Circuit design is enhanced by the addition of a synchronous set and an asynchronous reset product term. These
functions are common to all registers. When the synchronous set product term is a logic 1, the output registers
are loaded with a logic 1 on the next low-to-high clock transition. When the asynchronous reset product term
is a logic 1, the output registers are loaded with a logic 0. The output logic level after set or reset depends on
the polarity selected during programming. Output registers can be preloaded to any desired state during testing.
Preloading permits full logical verification during product testing.
With features such as programmable output logic macrocells and variable product term distribution, the
TIBPAL22V10-15BC offers quick design and development of custom LSI functions with complexities of 500 to
800 equivalent gates. Since each of the ten output pins may be individually configured as inputs on either a
temporary or permanent basis, functions requiring up to 21 inputs and a single output or down to 12 inputs and
10 outputs are possible.
A power-up clear function is supplied that forces all registered outputs to a predetermined state after power is
applied to the device. Registered outputs selected as active-low power up with their outputs high. Registered
outputs selected as active-high power up with their outputs low.
A single security fuse is provided on each device to discourage unauthorized copying of fuse patterns. Once
blown, the verification circuitry is disabled and all other fuses will appear to be open.
The TIBPAL22V10-15BC is characterized for operation from 0°C to 75°C.
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