74HC20 DUAL 4-INPUT NAND GATE SOP-14
The 74HC20 is an high speed CMOS DUAL 4-INPUT NAND GATE fabricated with silicon gate
C2MOS technology. The internal circuit is composed of 3-stage including buffered output, which gives high noise immunity and stable output.
Features
- HIGH SPEED: tPD = 9ns (TYP.) at VCC = 6V
- LOW POWER DISSIPATION: ICC = 1μA(MAX.) at TA =25°C
- HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.)
- SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) at VCC = 4.5V
- BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL
- WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V
- PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 20
PINOUT
| PIN No | SYMBOL | NAME AND FUNCTION |
|---|---|---|
| 1, 9 | 1A to 2A | Data Inputs |
| 2, 10 | 1B to 2B | Data Inputs |
| 3, 11 | N.C. | Not Connected |
| 4, 12 | 1C to 2C | Data Inputs |
| 5, 13 | 1D to 2D | Data Inputs |
| 6, 8 | 1Y to 2Y | Data Outputs |
| 7 | GND | Ground (0V) |
| 14 | VCC | Positive Supply Voltage |
TRUTH TABLE
| A | B | C | D | Y |
|---|---|---|---|---|
| L | X | X | X | H |
| X | L | X | X | H |
| X | X | L | X | H |
| X | X | X | L | H |
| H | H | H | H | L |
Specifications
RECOMMENDED OPERATING CONDITIONS
| Symbol | Parameter | Value | Unit | |
|---|---|---|---|---|
| VCC | Supply Voltage | 2 to 6 | V | |
| VI | Input Voltage | 0 to VCC | V | |
| VO | Output Voltage | 0 to VCC | V | |
| Top | Operating Temperature | -55 to 125 | °C | |
| tr, tf | Input Rise and Fall Time | VCC = 2.0V | 0 to 1000 | ns |
| VCC = 4.5V | 0 to 500 | ns | ||
| VCC = 6.0V | 0 to 400 | ns | ||
Applications
- Digital logic and combinational circuit design.
- Multi-condition logic evaluation systems.
- Microcontroller and digital interface circuits.
- Industrial control and embedded systems.
- High-density PCB and SMD electronics.
Documents
| Datasheet | 74HC20 |
| CAD Files | Download |