The 74HC138D is a 3-to-8 line decoder/demultiplexer integrated circuit from Nexperia.
Key Specifications:
1. Type: 3-to-8 line decoder/demultiplexer
2. Logic Family: HC (High-Speed CMOS)
3. Supply Voltage (Vdd): 2V to 6V
4. Operating Temperature: -40°C to 125°C
5. Package: SO16 (SOT109), 16-pin
Features:
1. 3-bit address input
2. 8-bit output enable (active low)
3. High-speed operation: tpd = 10ns (typ) at 5V
4. Low power consumption: ICC = 1μA (typ) at 5V
5. High noise immunity: VNH = 2.4V (typ) at 5V
6. Compatible with TTL and CMOS logic
7. Symmetrical output impedance
Applications:
1. Digital decoding and demultiplexing
2. Memory addressing and selection
3. Industrial control systems
4. Automotive electronics
5. Medical devices
6. Consumer electronics
Electrical Characteristics:
1. Propagation Delay (tpd): 10ns (typ) at 5V
2. Power Dissipation (Pd): 1μW (typ) at 5V
3. Input Current (Iin): 1μA (typ) at 5V
4. Output Current (Iout): 4mA (min) at 5V
Standards Compliance:
1. IEC 60950-1 (Safety Requirements)
2. UL 94V-0 (Flammability Rating)
3. RoHS compliant
Dimensions:
1. Length: 10.2mm (0.402in)
2. Width: 7.5mm (0.295in)
3. Height: 2.45mm (0.096in)
4. Pitch: 1.27mm (0.05in)
Datasheet:
For detailed specifications, please refer to the Nexperia 74HC138D datasheet.
Ordering Information:
To order or replace this IC, ensure you have the following information:
1. Part number (74HC138D)
2. Quantity required
You can purchase Nexperia ICs from authorized distributors, such as:
- Diode House
Equivalent Parts:
Some equivalent parts from other manufacturers are:
- Texas Instruments SN74HC138D
- ON Semiconductor MC74HC138D
- STMicroelectronics 74HC138D
Pin Configuration:
| Pin | Function |
| --- | --- |
| 1 | 1E1 |
| 2 | 1E2 |
| 3 | 1A0 |
| 4 | 1A1 |
| 5 | 1A2 |
| 6 | 1Y0 |
| 7 | 1Y1 |
| 8 | 1Y2 |
| 9 | 1Y3 |
| 10 | 1Y4 |
| 11 | 1Y5 |
| 12 | 1Y6 |
| 13 | 1Y7 |
| 14 | GND |
| 15 | Vdd |
| 16 | NC |
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