Fairchild Semiconductor DM7426N, DM7426CW Datasheet

© 2000 Fairchild Semiconductor Corporation DS006508 www.fairchildsemi.com

August 1986
Revised February 2000

DM7426 Quad 2-Input NAND Gates with High Voltage Open-Collector Outputs

DM7426
Quad 2-Input NAND Gates with

High Voltage Open-Collector Outputs

General Description

This device contains four independent gates each of which
performs the logic NA ND functio n. The open -collector out­puts require external pull-up resistors for proper logical
operation.

Pull-Up Resistor Equations

Where: N1 (IOH) = total maximum output high c urrent

for all outputs tied to pull-up resistor

N

2

(IIH) = total maximum input high current for
all inputs tied to pull-up resistor
N

3

(IIL) = total maximum input low current for
all inputs tied to pull-up resistor

Ordering Code:

Connection Diagram Function Table

Y = AB

H = HIGH Logic Level
L = LOW Logic Level

Order Number Package Number Package Description

DM7426N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs Output

ABY

LLH
LHH
HLH
HHL

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DM7426

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 parametric values defined in the Electrical
Characteristics tables 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.

Switching Characteristics

at VCC = 5V and TA = 25°C

Supply Voltage 7V
Input Voltage 5.5V
Output Voltage 15V
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 15 V

I

OL

LOW Level Output Current 16 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 = −12 mA −1.5 V

I

CEX

HIGH Level VCC = Min VO = 15V 1000

µA

Output Current VIL = Max VO = 12V 50

V

OL

LOW Level VCC = Min, IOL = Max

0.4 V

Output Voltage VIH = Min

I

I

Input Current @ Max VCC = Max,

1mA

Input Voltage VI = 5.5V

I

IH

High Level Input Current VCC = Max, VI = 2.4V 40 µA

I

IL

Low Level Input Current VCC = Max, VI = 0.4V −1.6 mA

I

CCH

Supply Current with Outputs HIGH VCC = Max 4 8 mA

I

CCL

Supply Current with Outputs LOW VCC = Max 12 22 mA

Symbol Parameter Conditions Min Max Units

t

PLH

Propagation Delay Time CL = 15 pF

24 ns

LOW-to-HIGH Level Output RL = 1 kΩ (t

PLH

)

t

PHL

Propagation Delay Time

17 ns

HIGH-to-LOW Level Output