Quad 2-Input NAND Gate
Description
DM74LS26 Quad 2-Input NAND Gate with High Voltage Open-Collector Outputs
August 1986 Revised March 2000
DM74LS26 Quad 2-Input NAND Gate with High Voltage Open-Collector Outputs
General Description
This device contains four independent gates each of which performs the logic NAND function.
The open-collector outputs require external pull-up resistors for proper logical operation.
These gates feature high-voltage output ratings (up to 15V) for interfacing with 12V systems.
Although the outputs are rated for 15V, the device supply is still rated for 5V.
Pull-Up Resistor Equations
Where:
N1 (IOH) = total maximum output high current for all outputs tied to pull-up resistor
N2 (IIH) = total maximum input high current for all inputs tied to pull-up resistor
N3 (IIL) = total maximum input low current for all inputs tied to pull-up resistor
Ordering Code:
Order Number Package Number
Package Description
DM74LS26M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.
150 Narrow
DM74LS26N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide
Devices also available in Tape and Reel.
Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
Y = AB
Inputs
A
B
L
L
L
H
H
L
H
H
H = HIGH Logic Level L = LOW Logic Level
Output Y H H H L
© 2000 Fairchild Semiconductor Corporation DS006358
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DM74LS26
Absolute Maximum Ratings(Note 1)
Supply Voltage
7V
Input Voltage
7V
Output Voltage
15V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range
−65°C to +150°C
Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits.
The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions for actual devic...
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