Datasheet SN54LS365A, SN74LS365A, SN54LS366A, SN74LS366A, SN54LS367A Datasheet (MOTOROLA)
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SN54/74LS365A
SN54/74LS366A
3-STATE HEX BUFFERS
These devices are high speed hex buffers with 3-state outputs. They are
organized as single 6-bit or 2-bit/4-bit, with inverting or non-inverting data (D)
paths. The outputs are designed to drive 15 TTL Unit Loads or 60 Low Power
Schottky loads when the Enable (E) is LOW.
When the Output Enable (E) is HIGH, the outputs are forced to a high
impedance “off” state. If the outputs of the 3-state devices are tied together,
all but one device must be in the high impedance state to avoid high currents
that would exceed the maximum ratings. Designers should ensure that Output
Enable signals to 3-state devices whose outputs are tied together are
designed so there is no overlap.
SN54/74LS367A
SN54/74LS368A
3-ST ATE HEX BUFFERS
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
16
1
16
1
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
16
1
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
T
I
I
CC
A
OH
OL
Supply Voltage 54
74
Operating Ambient Temperature Range 54
74
Output Current — High 54
74
Output Current — Low 54
74
4.5
4.75
–55
0
5.0
5.0
25
25
5.5
5.25
125
70
–1.0
–2.6
12
24
V
°C
mA
mA
FAST AND LS TTL DAT A
5-1
SN54/74LS365A • SN54/74LS366A
SN54/74LS367A • SN54/74LS368A
SN54/74LS365A
HEX 3-STATE BUFFER WITH
COMMON 2-INPUT NOR ENABLE
V
E
CC
2
16 15
123456
E
1
14 13 12 11 10 9
TRUTH TABLE
INPUTS
E1E2D
L
L
L
L
H
X
X
H
L
H
X
X
OUTPUT
L
H
(Z)
(Z)
7
GND
SN54/74LS366A
HEX 3-STATE INVERTER BUFFER
WITH COMMON 2-INPUT NOR ENABLE
V
E
CC
2
16 15
8
123456
E
1
14 13 12 11 10 9
7
GND
8
TRUTH TABLE
INPUTS
E1E2D
L
L
L
L
H
X
X
H
L
H
X
X
OUTPUT
H
L
(Z)
(Z)
SN54/74LS367A
HEX 3-STATE BUFFER
SEPARATE 2-BIT AND 4-BIT SECTIONS
E
V
CC
16 15
123456
E
14 13 12 11 10 9
7
GND
TRUTH TABLE
INPUTS
E D
L
L
H
L
H
X
OUTPUT
L
H
(Z)
SN54/74LS368A
HEX 3-STATE INVERTER BUFFER
SEPARATE 2-BIT AND 4-BIT SECTIONS
E
V
CC
16 15
8
123456
E
14 13 12 11 10 9
7
GND
8
TRUTH TABLE
INPUTS
E D
L
L
H
L
H
X
OUTPUT
H
L
(Z)
FAST AND LS TTL DATA
5-2
SN54/74LS365A • SN54/74LS366A
VILI
LOW Volt
V
pg
VOHOutput HIGH Volt
CC
,
OH
,
IN IH
VOLOutput LOW Volt
V
V
V
IIHI
HIGH C
t
CC
CC
L
p,
SN54/74LS367A • SN54/74LS368A
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter
V
IH
V
IK
I
OZH
I
OZL
I
IL
I
OS
I
CC
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
Input HIGH Voltage 2.0 V
nput
Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
Output Off Current HIGH 20 µA VCC = MAX, V
Output Off Current LOW –20 µA VCC = MAX, V
nput
Input LOW Current
E
Inputs
D Inputs –20 µA
Short Circuit Current (Note 1) –40 –225 mA VCC = MAX
Power Supply Current
LS365A, 367A
LS366A, 368A 21
age
age
age
urren
54 0.7
74 0.8
54 2.4 3.4 V
74 2.4 3.1 V
54, 74 0.25 0.4 V IOL = 12 mA
74 0.35 0.5 V IOL = 24 mA
Min Typ Max
20 µA VCC = MAX, VIN = 2.7 V
0.1 mA VCC = MAX, VIN = 7.0 V
–0.4 mA VCC = MAX, VIN = 0.4 V
–0.4 mA
24
Unit Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
Guaranteed Input LOW Voltage for
All Inputs
VCC = MIN, IOH = MAX, VIN = V
or VIL per Truth Table
VCC = MAX, VIN = 0.5 V
Either E Input at 2.0 V
VCC = MAX, VIN = 0.4 V
Both E
Inputs at 0.4 V
mA VCC = MAX
VCC = VCC MIN,
=
IN
per Truth Table
= 2.7 V
OUT
= 0.4 V
OUT
IH
or
IL
IH
AC CHARACTERISTICS (T
= 25°C, VCC = 5.0 V)
A
Symbol Parameter
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
Output Enable Time
Output Disable Time
Limits
LS365A/LS367A LS366A/LS368A
Min Typ Max Min Typ Max
10
9.01622
192435
40
30
35
7.01215
182835
FAST AND LS TTL DATA
5-3
Unit Test Conditions
ns
18
ns
45
32
ns CL = 5.0 pF
35
CL = 45 pF,
RL = 667 Ω
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