The ’AC/’ACT163 are high-speed synchronous modulo-16 binary counters. They are synchronously presettable for application in programmable dividers and have two types of Count Enable inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The ’AC/ ’ACT163 has a Synchronous Reset input that overrides counting and parallel.
n ICC reduced by 50%
Logic Symbols
Pin Names CEP CET CP SR P0
–P3 PE Q0
–Q3
DS100275-1
Description Count Enable Parallel Input Count Enable Trickle Input Clock Pulse Input Synchronous Reset Input Parallel Data Inputs Parallel Enable Input Flip-Flop Outputs Terminal Count Output
TC
IEEE/IEC
DS100275-2
FACT™ is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100275
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Connection Diagrams
Pin Assignment for DIP and Flatpak Pin Assignment for LCC
DS100275-3 DS100275-4
Functional Description
The ’AC/’ACT163 counts in modulo-16.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | 54AC161 |
National Semiconductor |
Synchronous Presettable Binary Counter | |
2 | 54AC16240 |
Texas Instruments |
16-BIT BUS DRIVERS | |
3 | 54AC16244 |
Texas Instruments |
16-BIT BUFFERS/LINE DRIVERS | |
4 | 54AC16245 |
Texas Instruments |
16-BIT BUS TRANSCEIVERS | |
5 | 54AC16373 |
Texas Instruments |
16-BIT TRANSPARENT D-TYPE LATCHES | |
6 | 54AC16374 |
Texas Instruments |
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS | |
7 | 54AC164245 |
STMicroelectronics |
Rad-hard 16-bit transceiver | |
8 | 54AC16472 |
Texas Instruments |
18-BIT REGISTERED TRANSCIEVERS | |
9 | 54AC16543 |
Texas Instruments |
18-BIT REGISTERED TRANSCIEVERS | |
10 | 54AC16620 |
Texas Instruments |
16-BIT BUS TRANSCEIVERS | |
11 | 54AC16640 |
Texas Instruments |
16-BIT BUS TRANSCEIVERS | |
12 | 54AC16646 |
Texas Instruments |
16-BIT BUS TRANSCEIVERS AND REGISTERS |