HIT HD74ACT368, HD74AC368 Datasheet
HD74AC368/HD74ACT368
Hex Inverter Buffer with 3-State Output
Features
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Outputs Source/Sink 24 mA
• HD74ACT368 has TTL-Compatible Inputs
Pin Arrangement
1
1 VCC
OE
I
2
O
3
I
4
O
5
6
I
O
7
GND
8
(Top view)
16
15
14
13
12
11
10
OE2
I
O
I
O
I
9
O
HD74AC368/HD74ACT368
Logic Symbol
OE
Pin Names
I O
OE1, OE
2
3-State Output: Enable Input (Active Low)
I Inputs
O Outputs
Truth Table
Inputs Output
OE I O
LL L
LH H
HX Z
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
Z : High Impedance
DC Characteristics (unless otherwise specified)
Item Symbol Max Unit Condition
Maximum quiescent supply current I
Maximum quiescent supply current I
Maximum ICC/input (HD74ACT368) I
CC
CC
CCT
80 µAV
8.0 µAV
1.5 mA VIN = VCC – 2.1 V, VCC = 5.5 V,
= VCC or ground, VCC = 5.5 V,
IN
Ta = Worst case
= VCC or ground, VCC = 5.5 V,
IN
Ta = 25°C
Ta = Worst case
2
AC Characteristics: HD74AC368
HD74AC368/HD74ACT368
Item Symbol V
Propagation delay t
PLH
(V)*1Min Typ Max Min Max Unit
CC
3.3 1.0 7.0 9.0 1.0 10.0 ns
5.0 1.0 5.0 7.0 1.0 7.5
Propagation delay t
PHL
3.3 1.0 7.0 9.0 1.0 10.0 ns
5.0 1.0 4.5 7.0 1.0 7.5
Enable time t
PZH
3.3 1.0 9.0 13.0 1.0 13.5 ns
5.0 1.0 7.0 9.5 1.0 10.0
Enable time t
PZL
3.3 1.0 10.0 12.5 1.0 13.5 ns
5.0 1.0 7.5 10.0 1.0 10.5
Disable time t
PHZ
3.3 1.0 9.5 12.0 1.0 12.5 ns
5.0 1.0 7.5 10.0 1.0 10.5
Disable time t
PLZ
3.3 1.0 9.0 12.5 1.0 13.5 ns
5.0 1.0 7.0 10.0 1.0 10.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
AC Characteristics: HD74ACT368
Ta = +25°C
C
= 50 pF
L
Ta = –40°C to +85°C
CL = 50 pF
Item Symbol V
Propagation delay t
Propagation delay t
Enable time t
Enable time t
Disable time t
Disable time t
PLH
PHL
PZH
PZL
PHZ
PLZ
Ta = +25°C
C
= 50 pF
L
(V)*1Min Typ Max Min Max Unit
CC
5.0 1.0 6.5 9.0 1.0 10.0 ns
5.0 1.0 6.0 9.0 1.0 10.0 ns
5.0 1.0 8.0 10.0 1.0 11.0 ns
5.0 1.0 8.0 12.0 1.0 13.0 ns
5.0 1.0 9.0 12.0 1.0 13.0 ns
5.0 1.0 8.5 11.0 1.0 12.0 ns
Ta = –40°C to +85°C
CL = 50 pF
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Capacitance
Item Symbol Typ Unit Condition
Input capacitance C
Power dissipation capacitance C
IN
PD
4.5 pF VCC = 5.5 V
40.0 pF VCC = 5.0 V
3
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