STMicroelectronics 74VHCT139A
The 74VHCT139A is an advanced high-speed CMOS DUAL 2 TO 4 LINE DECODER/ DEMULTIPLEXER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. The active low enable input can be used for gating or as a data input for demultiplexing applications. This device can be used to interface 5V to 3V.- Min Voltage : 4.5V
- Max Voltage : 5.5V
- Channels : 2
- Max Operating Temp : 125°C
- Min Operating Temp : -55°C
Source:
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| Part No. | 74VHCT139A |
|---|---|
| Datasheet | 74VHCT139A Download |
| Manufacturer |  STMicroelectronics |
| Description | DUAL 2 TO 4 DECODER/DEMULTIPLEXER |
| Buy | Stock & Price |
DESCRIPTION
While the enable input is held high, all four outputs are high independently of the other inputs. Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS March 2000 1/8 74VHCT139A INPUT EQUIVALENT CIRCUIT PINDESCRIPTION
PIN No 1, 15 2, 3 4, 5, 6, 7 12, 11, 10, 9 14, 13 8 16 SYMBOL 1G, 2G 1A, 1B NAME AND FUNCT ION Enable Inputs Address Inputs 1Y0 to 1Y3 Outputs 2Y0 to 2Y3 Outputs 2A, 2B GND VCC Address Inputs Ground (0V) Positive Supply Voltage TRUTH TABLE ENABLE G H L L L L X:Don’t Care INPUT S SELECT B X L L H H OUTPUTS A X L H L H Y0 H L H H H Y1 H H L H H Y2 H H H L H Y3 H H H H L LOGIC DIAGRAM Thislogic diagram has notbe used to estimate propagation delays 2/8 74VH...
