74HCT138D,653 Electronic Components IC PC Board Integratedcircuit
74HCT138D Electronic Components IC PC Board Integratedcircuit
74HCT138D 3-to-8 line decoder/demultiplexer; inverting
FEATURES
• Demultiplexing capability
• Multiple input enable for easy expansion
• Ideal for memory chip select decoding
• Active LOW mutually exclusive outputs
• Output capability: standard
• ICC category: MSI GENERAL
DESCRIPTION
The 74HC/HCT138 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
PIN DESCRIPTION
| PIN NO. | SYMBOL | NAME AND FUNCTION |
|
1, 2, 3 4, 5 6 8 15, 14, 13, 12, 11, 10, 9, 7 16 |
A0 to A2 E1, E2 E3 GND Y0 to Y7 VCC |
address inputs enable inputs (active LOW) enable input (active HIGH) ground (0 V) outputs (active LOW) positive supply voltage |
DC CHARACTERISTICS
FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI
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