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8-Bit Universal Shift/Storage Registers With 3-State Outputs
74299
ic logic
This IC is an 8-bit universal shift/storage register with 3-state outputs, used for data handling in various modes including hold, shift right, shift left, and load.
In stock
Specifications
5- Operating Voltage
- 4.5 V to 5.5 V (SN54ALS299); 0°C to 70°C (SN74ALS299) / –55°C to 125°C (SN54ALS299)
- Supply Current
- ICC = 23-40 mA (outputs low); 22-38 mA (outputs high); 23-40 mA (outputs disabled) mA
- Interface
- GPIO, 3-state outputs
- Temperature Range
- -55°C to 125°C (SN54ALS299); 0°C to 70°C (SN74ALS299) °C
- Package
- Plastic Small-Outline (DW), Ceramic Chip Carrier (FK), Standard Plastic (N) and Ceramic (J) 300-mil DIP
Pinout
11Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| S0 | Function Select 1 | GPIO | Selects operation mode |
| OE1 | Output Enable 1 | GPIO | Disables outputs when high |
| OE2 | Output Enable 2 | GPIO | Disables outputs when high |
| G/QG | Clear | GPIO | Asynchronous clear input |
| E/QE | Clock | GPIO | Synchronizes data transfer |
| C/QC | Serial Load (SL) | GPIO | Loads data in shift mode |
| A/QA | Data Input 1 | GPIO | Input for data transfer |
| QA′ | Output 1 (Shift Right) | GPIO | 3-state output |
| CLR | Clear | GPIO | Asynchronous clear input |
| GND | Ground | GND | |
| VCC | Supply Voltage | POWER | 5.5V supply voltage |
Interactive pinout
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74299
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