參數(shù)資料
型號: 74LVC138APWDH
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 3-to-8 line decoder/demultiplexer; inverting
中文描述: LVC/LCX/Z SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: PLASTIC, TSSOP1-16
文件頁數(shù): 6/10頁
文件大?。?/td> 94K
代理商: 74LVC138APWDH
Philips Semiconductors
Product specification
74LVC138A
3-to-8 line decoder/demultiplexer; inverting
1998 Apr 28
6
AC WAVEFORMS
V
M
= 1.5 V at V
CC
V
M
= 0.5 V
CC
at V
CC
< 2.7 V
V
OL
and V
OH
are the typical output voltage drop that occur with the
output load.
2.7 V
SV00557
VM
An, E3
INPUT
VCC
GND
VOL
VOH
Yn OUTPUT
VM
tPLH
tPHL
Figure 1.
Input (nA) to output (nY) propagation delays.
SV00558
VM
E1, E2
INPUT
Yn OUTPUT
VM
tPLH
tPHL
VCC
GND
VOL
VOH
Figure 2.
3-State enable and disable times.
TEST CIRCUIT
SWITCH POSITION
PULSE
GENERATOR
R
T
V
I
D.U.T.
V
O
C
L
V
CC
500
Open
GND
S
1
V
CC
V
I
< 2.7V
V
CC
TEST
S
1
t
PLH/
t
PHL
Open
2.7V
2.7–3.6V
50pF
500
2 * V
CC
SV00903
Figure 3.
Load circuitry for switching times.
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