Fairchild Semiconductor DM74LS266N, DM74LS266MX, DM74LS266M Datasheet
© 2000 Fairchild Semiconductor Corporation DS010182 www.fairchildsemi.com
March 1989
Revised March 2000
DM74LS266 Quad 2-Input Exclusive-NOR Gate
DM74LS266
Quad 2-Input Exclusive-NOR Gate
with Open-Collector Outputs
General Description
This device contains four independent gates each of which
performs the logic exclusive-NOR function. Outputs are
open collector.
Ordering Code:
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.
Connection Diagram Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
Order Number Package Number Package Description
DM74LS266M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JED EC MS-120, 0.150 Narrow
DM74LS266N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs Outputs
AB Y
LL H
LH L
HL L
HH H
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DM74LS266
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratin gs” are those v alues beyon d which
the safety of the dev ice cannot be guaranteed. T he device sh ould not be
operated at these limits. The paramet ric values defined in the “Electrical
Characteristics” ta ble are not guaranteed at the absolute maximum ratings.
The “Recommend ed O peratin g Cond itions” t able w ill defin e the co ndition s
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Switching Characteristics
VCC = 5V, TA = 25°C
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.75 5 5.25 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
V
OH
HIGH Level Output Voltage 5.5 V
I
OL
LOW Level Output Current 8 mA
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min
Typ
Max Units
(Note 2)
V
I
Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V
I
CEX
HIGH Level VCC = Min, VO = 5.5V,
100 µA
Output Current VIL = Max
V
OL
LOW Level VCC = Min, IOL = Max,
0.5
Output Voltage VIH = Min V
IOL = 4 mA, VCC = Min 0.4
I
I
Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.2 mA
I
IH
HIGH Level Input Current VCC = Max, VI = 2.7V 40 µA
I
IL
LOW Level Input Current VCC = Max, VI = 0.4V −0.8 mA
I
OS
Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA
I
CC
Supply Current VCC = Max 13 mA
RL = 2 kΩ
Symbol Parameter CL = 15 pF Units
Min Max
t
PLH
Propagation Delay Time
23 ns
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
23 ns
HIGH-to-LOW Level Output
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