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參數(shù)資料
| 型號： | SNJ54LV139AFK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Small Signal High Voltage Transistor-NPN; Package: SOT-23 (TO-236) 3 LEAD; No of Pins: 3; Container: Tape and Reel; Qty per Container: 3000 |
| 中文描述： | 雙程線，4線解碼器/解復(fù)用器 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 322K |
| 代理商： | SNJ54LV139AFK |
SN54LV139A, SN74LV139A
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SCLS396G
–
APRIL 1998
–
REVISED JULY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information(continued)
These devices are designed for high-performance memory-decoding or data-routing applications requiring very
short propagation delay times. In high-performance memory systems, these decoders can minimize the effects
of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay time
of these decoders and the enable time of the memory usually are less than the typical access time of the
memory. This means that the effective system delay introduced by the decoders is negligible.
The
’
LV139A devices comprise two individual 2-line to 4-line decoders in a single package. The active-low
enable (G) input can be used as a data line in demultiplexing applications. These decoders/demultiplexers
feature fully buffered inputs, each of which represents only one normalized load to its driving circuit.
These devices are fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the
outputs, preventing damaging current backflow through the devices when they are powered down.
FUNCTION TABLE
INPUTS
SELECT
B
OUTPUTS
G
A
Y0
Y1
Y2
Y3
H
X
X
H
H
H
H
L
L
L
L
H
H
H
L
L
H
H
L
H
H
L
H
L
H
H
L
H
L
H
H
H
H
H
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SNJ54LV139AJ | Small Signal High Voltage Transistor-NPN; Package: SOT-23 (TO-236) 3 LEAD; No of Pins: 3; Container: Tape and Reel; Qty per Container: 3000 |
| SNJ54LV139AW | Small Signal High Voltage Transistor-NPN; Package: SOT-23 (TO-236) 3 LEAD; No of Pins: 3; Container: Tape and Reel; Qty per Container: 10000 |
| SN74LV139ANS | DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS |
| SN74LV139ADGV | DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS |
| SN74LV139ADGVR | DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS |
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