IC 74238

3-Line To 8-Line Decoders/Demultiplexers
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IC 74238 Specification

Absolute Maximum Ratings:
Supply Voltage: 7V
Input Voltage: 5.5V
Operating Free Air Temperature: 0oC to +70oC
Storage Temperature Range: -65oC to +150oC
The ’HC238, and ’HCT238 are high-speed silicon-gate CMOS decoders well suited to memory address decoding or data-routing applications. Both circuits feature low power consumption usually associated with CMOS circuitry, yet have speeds comparable to low-power Schottky TTL logic. Both circuits have three binary select inputs (A0, A1, and A2). If the device is enabled, these inputs determine which one of the eight normally high outputs of the HC/HCT138 series go low or which of the normally low outputs of the HC/HCT238 series go high. Two active low and one active high enables are provided to ease the cascading of decoders. The decoder’s eight outputs can drive ten low-power Schottky TTL equivalent loads.

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