74LS92 Divide-by-12 Counter
Package CDIP, SOIC, PDIP Series 74LS
74LS92 overview
The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS92 monolithic counters contain four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for the count cycle.
Key specifications
Supply Voltage
4.75 - 5.25Vdc
Maximum Clock Frequency
40Mhz
Power Dissipation
2mW/gate @100kHz
Minimum Output Current
8mA
Propagation Delay
10nS
Fan Out (TTL Loads)
20
Datasheet
sn74ls92.pdf
74LS92 features
- Contains a divide-by-two Section and a divide-by-six Section
- Sections Can be Combined to form BCD, modulo-12 or modulo-16 Counters
- Low Power Dissipation
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS92 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | CK(B) | Clock Input B |
| 2 | NC | Not Connected |
| 3 | NC | Not Connected |
| 4 | NC | Not Connected |
| 5 | VCC | Positive Supply |
| 6 | RO(1) | Reset Output 1 |
| 7 | RO(2) | Reset Output 2 |
| 8 | QD | Output Bit QD Of Counter |
| 9 | QC | Output Bit QC Of Counter |
| 10 | GND | Ground |
| 11 | QB | Output Bit QB Of Counter |
| 12 | QA | Output Bit QA Of Counter |
| 13 | NC | Not connected |
| 14 | CK(A) | Clock Input A |
74LS92 applications
- Frequency counters
- Digital clocks
- Analog to digital converters
More about 74LS92
74LS92 Alternative Equivalent
74LS93, 74LS161, 74LS162
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