参数资料
型号: 74AHCT139PWDH
厂商: NXP SEMICONDUCTORS
元件分类: 通用总线功能
英文描述: Dual 2-to-4 line decoder/demultiplexer
中文描述: AHCT/VHCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封装: 4.40 MM, PLASTIC, SOT-403-1, TSSOP-16
文件页数: 10/16页
文件大小: 582K
代理商: 74AHCT139PWDH
1999 Sep 01
10
Philips Semiconductors
Product specification
Dual 2-to-4 line decoder/demultiplexer
74AHC139;
74AHCT139
AC WAVEFORMS
Fig.5
The address input (nA
n
) to output (nY
n
)
propagation delays.
FAMILY
V
I
INPUT
REQUIREMENTS
V
M
INPUT
V
M
OUTPUT
AHC
AHCT
GND to V
CC
GND to 3.0 V
50% V
CC
50% V
CC
1.5 V
50% V
CC
handbook, halfpage
MNA469
tPHL
VI
GND
VOH
VOL
tPLH
VM
(1)
VM
(1)
nAn INPUT
nYn OUTPUT
Fig.6
The enable input (nE) to output (nY
n
)
propagation delays.
FAMILY
V
I
INPUT
REQUIREMENTS
V
M
INPUT
V
M
OUTPUT
AHC
AHCT
GND to V
CC
GND to 3.0 V
50% V
CC
50% V
CC
1.5 V
50% V
CC
handbook, halfpage
MNA470
tPHL
VI
GND
VOH
VOL
tPLH
VM
(1)
VM
(1)
nE INPUT
nYn OUTPUT
Fig.7 Load circuitry for switching times.
handbook, full pagewidth
open
GND
VCC
VCC
VI
VO
MNA219
D.U.T.
CL
RT
1000
PULSE
GENERATOR
S1
TEST
S
1
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
open
V
CC
GND
Definitions for test circuit:
C
= Load capacitance including jig and probe capacitance.
(See Chapter “AC characteristics” for values).
R
= Termination resistance should be equal to the output
impedance Z
o
of the pulse generator.
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