National Semiconductor 54F14, 74F14 Technical data

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54F/74F14
Hex Inverter Schmitt Trigger

General Description

The ’F14 contains six logic inverters which accept standard
TTL input signals and provide standard TTL output levels.
They are capable of transforming slowly changing input sig­nals into sharply defined, jitter-free output signals. In addi­tion, they have a greater noise margin than conventional
inverters.

Each circuit contains a Schmitt trigger followed by a Darling­ton level shifter and a phase splitter driving a TTL totem­pole output. The Schmitt trigger uses positive feed back to

December 1994

effectively speed-up slow input transition, and provide differ­ent input threshold voltages for positive and negative-going
transitions. This hysteresis between the positive-going and
negative-going input thresholds (typically 800 mV) is deter­mined internally by resistor ratios and is essentially insensi­tive to temperature and supply voltage variations.

Features

Y

Guaranteed 4000V minimum ESD protection

Y

Standard Military Drawing
Ð 5962-88752

54F/74F14 Hex Inverter Schmitt Trigger

Commercial Military

74F14PC N14A 14-Lead (0.300×Wide) Molded Dual-In-Line

54F14DM (Note 2) J14A 14-Lead Ceramic Dual-In-Line

74F14SC (Note 1) M14A 14-Lead (0.150×Wide) Molded Small Outline, JEDEC

74F14SJ (Note 1) M14D 14-Lead (0.300×Wide) Molded Small Outline, EIAJ

54F14FM (Note 2) W14B 14-Lead Cerpack

54F14LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C

Note 1: Devices also available in 13×reel. Use SuffixeSCX and SJX.

Note 2: Military grade device with environmental and burn-in processing. Use suffix

Logic Symbol

IEEE/IEC

TL/F/9461– 3

Package

Number

Connection Diagrams

Pin Assignment

DIP, SOIC and Flatpak

Package Description

e

DMQB, FMQB and LMQB.

TL/F/9461– 1

Pin Assignment

for LCC

TL/F/9461– 2

TRI-STATEÉis a registered trademark of National Semiconductor Corporation.

C

1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.

TL/F/9461

Unit Loading/Fan Out

Pin Names Description

I

n

O

n

Function Table

Input Output

AO

LH
HL

e

H

HIGH Voltage Level

e

LOW Voltage Level

L

Input 1.0/1.0 20 mA/b0.6 mA
Output 50/33.3

54F/74F

U.L. Input I

HIGH/LOW Output IOH/I

b

1 mA/20 mA

IH/IIL

OL

2

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Storage Temperature

Ambient Temperature under Bias

Junction Temperature under Bias

VCCPin Potential to

Ground Pin

Input Voltage (Note 2)

Input Current (Note 2)

Voltage Applied to Output

in HIGH State (with V
Standard Output

CC

e

TRI-STATEÉOutput

0V)

b

65§Ctoa150§C

b

55§Ctoa125§C

b

55§Ctoa175§C

b

0.5V toa7.0V

b

0.5V toa7.0V

b

30 mA toa5.0 mA

b

0.5V to V

b

0.5V toa5.5V

Current Applied to Output

in LOW State (Max) twice the rated I

(mA)

OL

ESD Last Passing Voltage (Min) 4000V

Note 1: Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired. Functional operation under
these conditions is not implied.

Note 2: Either voltage limit or current limit is sufficient to protect inputs.

DC Electrical Characteristics

Symbol Parameter

V

V

DV

V

V

V

I

IH

I

BVI

I

CEX

V

I

OD

I

IL

I

OS

I

CCH

I

CCL

T

T

CD

OH

OL

ID

a

b

T

Positive-Going Threshold 1.5 1.7 2.0 V 5.0V

Negative-Going Threshold 0.7 0.9 1.1 V 5.0V

Hysteresis (V

–V

a

b

T

T

Input Clamp Diode Voltage

Output HIGH 54F 10% V
Voltage 74F 10% V

Output LOW 54F 10% V
Voltage 74F 10% V

Input HIGH 54F 20.0
Current 74F 5.0

Input HIGH Current 54F 100
Breakdown Test 74F 7.0

Output HIGH 54F 250
Leakage Current 74F 50

Input Leakage
Test All Other Pins Grounded

Output Leakage
Circuit Current All Other Pins Grounded

Input LOW Current

Output Short-Circuit Current

Power Supply Current 25 mA Max V

Power Supply Current 25 mA Max V

) 0.4 0.8 V 5.0V

74F 5% V

74F 4.75 V Max

74F 3.75 mA 0.0

Min Typ Max

2.5 I

CC

2.5 V Min I

CC

CC

2.7 I

CC

CC

b

CC

60

Recommended Operating
Conditions

Free Air Ambient Temperature

Military
Commercial 0

Supply Voltage

Military
Commercial

54F/74F

b

b

b

Units V

CC

1.2 V Min I

0.5

0.5 I

V Min

mA Max

mA Max

mA Max

0.6 mA Max V

150 mA Max V

IN

OH

OH

OH

I

OL

OL

V

IN

V

IN

V

OUT

I

ID

V

IOD

IN

OUT

O

O

b

Conditions

eb

eb

eb

eb

e

e

e

e

e

e

1.9 mA

e

e

e

e

HIGH

e

LOW

55§Ctoa125§C

Ctoa70§C

§

a

4.5V toa5.5V

a

4.5V toa5.5V

18 mA

1mA
1mA
1mA

20 mA
20 mA

2.7V

7.0V

V

CC

150 mV

0.5V

0V

3