5-1
FAST AND LS TTL DATA
QUAD 2-INPUT
EXCLUSIVE NOR GATE
TRUTH TABLE
IN OUT
AB Z
L
LL
LL
LH
H
H
H
H
H
14 13 12 11 10 9
123456
8
7
V
CC
GND
*
*OPEN COLLECTOR OUTPUTS
*
**
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
VCC Supply Voltage 54
74 4.5
4.75 5.0
5.0 5.5
5.25 V
TAOperating Ambient Temperature Range 54
74 –55
025
25 125
70 °C
VOH Output Voltage — High 54, 74 5.5 V
IOL Output Current — Low 54
74 4.0
8.0 mA
SN54/74LS266
QUAD 2-INPUT
EXCLUSIVE NOR GATE
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
J SUFFIX
CERAMIC
CASE 632-08
N SUFFIX
PLASTIC
CASE 646-06
14 1
14
1
14 1
D SUFFIX
SOIC
CASE 751A-02
5-2
FAST AND LS TTL DATA
SN54/74LS266
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Sbl
P
Limits
Ui
T C di i
Symbol Parameter Min Typ Max Unit Test Conditions
VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54 0.7
V
Guaranteed Input LOW Voltage for
V
IL
I
npu
t
LOW
V
o
lt
age 74 0.8
V
pg
All Inputs
VIK Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
VOH Output HIGH Voltage 54, 74 100 µA VCC = MIN, VOH = MAX
VOL
Output LOW Voltage
54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN,
VIN =V
IL or VIH
V
OL
O
u
t
pu
t
LOW
V
o
lt
age 74 0.35 0.5 V IOL = 8.0 mA
V
IN =
V
IL or
V
IH
per T ruth Table
IIH
Input HIGH Current
40 µA VCC = MAX, VIN = 2.7 V
I
IH
I
npu
t
HIGH
C
urren
t
0.2 mA VCC = MAX, VIN = 7.0 V
IIL Input LOW Current –0.8 mA VCC = MAX, VIN = 0.4 V
ICC Power Supply Current 13 mA VCC = MAX
AC CHARACTERISTICS (TA = 25°C)
Sbl
P
Limits
Ui
T C di i
Symbol Parameter Min Typ Max Unit Test Conditions
tPLH
tPHL Propagation Delay, Other Input LOW 18
18 30
30 ns VCC = 5.0 V
tPLH
tPHL Propagation Delay, Other Input HIGH 18
18 30
30 ns
CC
CL = 15 pF, RL = 2.0 kΩ
