TheTTL - Al Kossow's Bitsavers

THCTPAL16L8, THCTPAL16R4, THCTPAL16R6, THCTPAL16R8
HIGH·SPEED CMOS PAL CIRCUITS
The floating-gate programming cells allow the PALs to be fully programmed and tested before assembly
to ensure high field-programming yield. The test program is then erased by ultraviolet light before packaging.
When programmed with the required pattern, a security cell can be programmed to prevent the pattern
from being read. Because the device uses floating-gate technology, the design cannot be determined by
observing the blown fuses used in other PALs.
During testing, the registers can be preloaded by entering the preload mode.
The M suffix devices will be characterized for operation over the full military temperature range of - 55 DC
to 125 DC. The C suffix devices will be characterized for operation from 0 DC to 70 DC.
TABLE 1. INPUT/OUTPUT CONFIGURATION.
DEVICE INPUTS
3-STATE REGISTERED
o OUTPUTS o OUTPUTS
1/0 PORTS
THCTPAL 16L8 10 2 0 6
THCTPAL 16R4 8 0 4 4
THCTPAL16R6 8 0 6 2
THCTPAL 16R8 8 0 8 0
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INSTRUMENTS
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