74AHC139 View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
74AHC139 Datasheet PDF : 16 Pages
| |||
Philips Semiconductors
Dual 2-to-4 line decoder/demultiplexer
AC WAVEFORMS
Product specification
74AHC139;
74AHCT139
handbook, halfpage VI
nAn INPUT
GND
VOH
nYn OUTPUT
VOL
VM(1)
t PHL
VM(1)
t PLH
MNA469
handbook, halfpage VI
nE INPUT
GND
VOH
nYn OUTPUT
VOL
VM(1)
t PHL
VM(1)
t PLH
MNA470
FAMILY
VI INPUT
REQUIREMENTS
VM
INPUT
VM
OUTPUT
AHC GND to VCC
AHCT GND to 3.0 V
50% VCC 50% VCC
1.5 V
50% VCC
Fig.5 The address input (nAn) to output (nYn)
propagation delays.
FAMILY
VI INPUT
REQUIREMENTS
VM
INPUT
VM
OUTPUT
AHC GND to VCC
AHCT GND to 3.0 V
50% VCC 50% VCC
1.5 V
50% VCC
Fig.6 The enable input (nE) to output (nYn)
propagation delays.
handbook, full pagewidth
PULSE
VI
GENERATOR
VCC
VO
D.U.T.
RT
S1
1000 Ω
VCC
open
GND
CL
MNA219
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
open
VCC
GND
1999 Sep 01
Definitions for test circuit:
CL = Load capacitance including jig and probe capacitance.
(See Chapter “AC characteristics” for values).
RT = Termination resistance should be equal to the output
impedance Zo of the pulse generator.
Fig.7 Load circuitry for switching times.
10
|
|
Share Link: 