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參數(shù)資料
| 型號(hào)： | HD74HCT137 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 3-to-8-line Decoder/Demultiplexer with Address Latch |
| 中文描述： | 3至8線解碼器/解復(fù)用器的地址鎖存器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 56K |
| 代理商： | HD74HCT137 |
HD74HCT137
3-to-8-line Decoder/Demultiplexer with Address Latch
Description
The HD74HCT137 implements a three-to-eight line decoder with latches on the three address inputs.
When
GL
goes from low to high, the address present at the select inputs (A, B and C) is stored in the
latches. As long as
GL
remains high no address changes will be recognized. Output enable controls, G
1
and G
2
, control the state of the outputs independently of the select or latch-enable inputs.
All of the outputs are high unless G
1
is high and G
2
is low. The HD74HCT137 is ideally suited for the
implementation of glitchfree decoders in stored-address applications in bus oriented systems.
Features
LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility
High Speed Operation: t
pd
(A, B, C to Y) = 18 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 4.5 to 5.5 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
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