Datasheet

50% V
CC
V
CC
V
CC
0 V
0 V
t
h
t
su
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Data Input
t
PLH
t
PHL
t
PHL
t
PLH
V
OH
V
OH
V
OL
V
OL
V
CC
0 V
50% V
CC
50% V
CC
Input
Out-of-Phase
Output
In-Phase
Output
Timing Input
50% V
CC
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Control
Output
Waveform 1
S1 at V
CC
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
V
OL
V
OH
t
PZL
t
PZH
t
PLZ
t
PHZ
V
CC
0 V
50% V
CC
V
OL
+ 0.3 V
50% V
CC
0 V
V
CC
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
Open Drain
Open
V
CC
GND
V
CC
TEST S1
V
CC
0 V
50% V
CC
t
w
VOLTAGE WAVEFORMS
PULSE DURATION
Input
From Output
Under Test
C
L
(see Note A)
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
S1
V
CC
R
L
= 1 kΩ
GND
From Output
Under Test
C
L
(see Note A)
Test
Point
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Open
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
V
OH
0.3 V
SN74AHC1G09
www.ti.com
SCLS724B MAY 2011 REVISED JULY 2011
PARAMETER MEASUREMENT INFORMATION
A. C
L
includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output
control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the
output control.
C. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, Z
O
= 50 Ω, t
r
3 ns, t
f
3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
E. All parameters and waveforms are not applicable to all devices.
F. Since this device has open-drain outputs, t
PLZ
and t
PZL
are the same as t
PD
.
G. t
PZL
is measured at V
CC
/2.
H. t
PLZ
is measured at V
OL
+ 0.3 V.
Figure 1. Load Circuit and Voltage Waveforms
Copyright © 2011, Texas Instruments Incorporated 5