74HC series ICs are High-speed logic gates with very low power consumption that utilize advanced silicon-gate CMOS technology and 74HC164 is one of them. It has balanced propagation delay and transition times. 74HC164 ICs contain an 8-bit shift register with two input NAND gate as well as an asynchronous clear pin( CLR ). The device requires a HIGH signal at both Input A and B pins. The CLK pin of the SN74HC164 is triggered on a positive or rising-edge signal, from LOW to HIGH. Upon a positive-edge trigger, the device will store the result of the (A.B) input data line in the first register and propagate each register€š¬€ž¢s data to the next register. The data of the last register will be discarded at each clock trigger. If a low signal is applied to the CLR pin of the SN74HC164, the device will set all registers to a value of 0 immediately.
The 74HC164 ICs have a wide operating range of VCC from 2 V to 6 V. Maximum current consumption is 80 uA through Icc and 1 uA per input pin. And the propagation delay is 20 ns. They can drive 10 LS-TTL loads at a time. This means that the output pin of the shift register can drive 10 TTL based Low-Power Schottky( LS ) input pins. They can provide 6 mA on outputs at 5 V VCC. They allow inputs and outputs up to VCC. Recommended operating VCC is 5 V. Load Current can reach up to 25 mA per output pin and 50 mA for overall pins in between 0 V to VCC.
Applications
- Programmable Logic Controllers
- Appliances
- Video Display Systems
- Output Expander
Specification
:| Operating Voltage Range | 2.0 to 6.0 V |
| Package | DIPˆ‚¬„¢14 |
| Input Current | 1 uA |
| Powering Current | 80 uA |
| Output Current at VCC | 6 mA |
| Fan-Out | 10 LS-TTL Load |
| Propagation Delay | 20 ns |
| Temperature Range | -65 °C to +150 °C |
Pin Configuration:
| Data Input Pin (A, B) | 1, 2 |
| Parallel Output Pins (Q[0:7]) | 3, 4, 5, 6, 10, 11, 12, 13 |
| Active Low Clear Pin (CLR') | 9 |
| Clock Pin (CLK) | 8 |
| Power Supply (VCC) | 14 |
| Ground (GND) | 7 |
Applications
- Programmable Logic Controllers
- Appliances
- Video Display Systems
- Output Expander
FAQs
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