HD74HCT1G66

Rev.7.00, Jan.29.2004, page 6 of 8GND(OFF)AVC = VIL
VCC
VCC VCC
VCC
VIN = VCC
or GNDVOUT = GND
or VCC
VC = VIH
VIN = VCC
or GND GND(ON)AVOUTOPEN• I
S
(off), I
S
(on)GND(ON)VC = VIH
VIN
VIN
VOH
VOL
tPLH tPHL
VCC
VCC
VOUT
VOUT
RL =10 kΩCL =50 pF3 VGND90% 90%1.3V 1.3V1.3V 1.3V10%10%

• tPLH, tPHL

tr = 6 ns tf = 6 ns
GND
GND
Item S1 S2
V
C
V
C
V
OH
V
OL
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
OUT
V
OUT
t
LZ
t
ZL
t
HZ
t
ZH
V
IN
t
ZH
C
L
=
50 pF R
L
=
1 kΩ
3 V
GND
GND
90% 90%
1.3V 1.3V
1.3V
10%10%
Waveform - A
Waveform - B
GND
t
ZL
GND
t
HZ
GND
t
LZ
S1
R =
1 k
L
Ω
S2
90%
1.3V 10%
• tZH, tZL / tHZ, tLZ
t
r
= 6 ns t
f
= 6 ns
Notes: 1. Waveform - A is for an output with internal conditions such that the output is high
except when disabled by the output control.
2. Waveform - B is for an output with internal conditions such that the output is low
except when disabled by the output control.