TIBPAL20R6-10C

TIBPAL20L8-10C, TIBPAL20R4-10C, TIBPAL20R6-10C, TIBPAL20R8-10C HIGH-PERFORMANCE IMPACT-X ™ PAL® CIRCUITS High-Performance Operation: fmax (no feedback) TIBPAL20R’ . . . 71.4 MHz fmax (internal feedback) TIBPAL20R’ . . . 58.8 MHz fmax (external feedback) TIBPAL20R’ . . . 55.5 MHz Propagation Delay TIBPAL20’ . . . 10 ns Max Functionally Equivalent, but Faster Than Existing 24-Pin PLD Circuits 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 Security Fuse Prevents Duplication Dependable Texas Instruments Quality and Reliability DEVICE I 3-STATE INPUTS O OUTPUTS PAL20L8 PAL20R4 PAL20R6 PAL20R8 14 12 12 12 2 0 0 0 REGISTERED Q OUTPUTS 0 4 (3-state buffers) 6 (3-state buffers) 8 (3-state buffers) I/O PORT S 6 4 2 0 SRPS008A – D3336, OCTOBER 1989 – REVISED MARCH 1992 TIBPAL20L8’ JT OR NT PACKAGE (TOP VIEW) I I I I I I I I I I I GND 1 2 3 4 5 6 7 8 9 10 11 12 24 VCC 23 I 22 O 21 I/O 20 I/O 19 I/O 18 I/O 17 I/O 16 I/O 15 O 14 I 13 I TIBPAL20L8’ FN PACKAGE (TOP VIEW) 4 3 2 1 28 27 26 I5 25 I/O I6 24 I/O I7 23 I/O NC 8 22 NC I9 21 I/O I 10 20 I/O I 11 19 I/O 12 13 14 15 16 17 18 II II GND I NC NC I VCC II OO description These programmable array logic devices feature high speed and functional equivalency when NC – No internal conne...