74LS590 8-bit Binary Counter with Tri-State Register
Package SOIC-16, PDIP-16, SO-16 Series 74LS Status Active (9-Mar-2021)
74LS590 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.74LS590 contains an 8-bit binary counter that feeds an 8-bit storage register. The storage register has parallel outputs.
Datasheet
sn74ls590.pdf
74LS590 features
- Contains an 8-bit Binary Counter that Feeds an 8-bit Storage Register
- Separate Clock for Binary Counter and Storage Register
- Parallel Register Outputs
- 3-State Outputs
- Standard TTL Switching Voltages
74LS590 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | QB | the serial-in, parallel-out shift register Bit B |
| 2 | QC | the serial-in, parallel-out shift register Bit C |
| 3 | QD | the serial-in, parallel-out shift register Bit D |
| 4 | QE | the serial-in, parallel-out shift register Bit E |
| 5 | QF | the serial-in, parallel-out shift register Bit F |
| 6 | QG | the serial-in, parallel-out shift register Bit G |
| 7 | QH | the serial-in, parallel-out shift register Bit H |
| 8 | GND | Ground |
| 9 | RCO' | Ripple Carry Output (Active Low |
| 10 | CCLR' | Counter Clear Input (Active Low) |
| 11 | CCK | Counter-Clock |
| 12 | CCKEN' | Counter Clear Enable (Active Low) |
| 13 | RCK | Register Clock |
| 14 | G' | Enable Pin (Active Low) |
| 15 | QA | serial-in, parallel-out shift register Bit A |
| 16 | VCC | Positive Supply |
74LS590 applications
- Frequency counters
- Digital clocks
- Analog to digital convertors
- With some changes in their design, counters can be used as frequency divider circuits
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