Texas Instruments SN74HCT14DBLE, SN74HCT14DBR, SN74HCT14DGVR, SN74HCT14DR, SN74HCT14N Datasheet

SN54HCT14, SN74HCT14

HEX SCHMITT-TRIGGER INVERTERS

SCLS225C – JULY 1995 – REVISED FEBRUAR Y 2000

D

Inputs Are TTL-Voltage Compatible

D

Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), Thin
Shrink Small-Outline (PW), and Ceramic
Flat (W) Packages, Ceramic Chip Carriers
(FK), and Standard Plastic (N) and Ceramic
(J) DIPs

description

The ’HCT14 devices contain six independent
inverters. The devices perform the Boolean
function Y = A in positive logic.

The SN54HCT14 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HCT14 is characterized for
operation from –40°C to 85°C.

FUNCTION TABLE

(each inverter)

INPUT

A

H L

L H

OUTPUT

Y

SN54HCT14 ...J OR W PACKAGE

SN74HCT14 . . . D, DB, DGV, N, OR PW PACKAGE

SN54HCT14 . . . FK PACKAGE

2A

NC

2Y

NC

3A

NC – No internal connection

(TOP VIEW)

1A

1

1Y

2

2A

3

2Y

4

3A

5
6

3Y

GND

7

(TOP VIEW)

1Y1ANC

3212019

4
5
6
7
8

910111213

3Y

GND

NC

14
13
12
11
10

9
8

V

4Y

CC

V
6A
6Y
5A
5Y
4A
4Y

6A

18
17
16
15
14

4A

CC

6Y
NC
5A
NC
5Y

logic symbol

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the D, DB, DGV, J, N, PW, and W packages.

†

1

1A

3

2A

5

3A

9

4A

11

5A

13

6A

logic diagram (positive logic)

AY

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

10
12

2

1Y

4

2Y

6

3Y

8

4Y
5Y

6Y

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  2000, Texas Instruments Incorporated

On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.

1

SN54HCT14, SN74HCT14

UNIT

HEX SCHMITT-TRIGGER INVERTERS

SCLS225C – JULY 1995 – REVISED FEBRUAR Y 2000

absolute maximum ratings over operating free-air temperature range

†

Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, V
Output voltage range, V

(see Note 1) –0.5 V to VCC +0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

(see Note 1) –0.5 V to VCC +0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

Input clamp current, IIK (VI < 0 or VI > VCC) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output clamp current, IOK (VO < 0 or VO > VCC) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output current, IO (VO = 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous current through VCC or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θ

(see Note 2): D package 86°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

JA

DB package 96°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DGV package 127°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

N package 80°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51.

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

recommended operating conditions (see Note 3)

SN54HCT14 SN74HCT14

MIN MAX MIN MAX

V
V
V
T

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Supply voltage 4.5 5.5 4.5 5.5 V

CC

Input voltage 0 V

I

Output voltage 0 V

O

Operating free-air temperature –55 125 –40 85 °C

A

Implications of Slow or Floating CMOS Inputs

, literature number SCBA004.

CC
CC

0 V
0 V

CC
CC

V
V

2

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PARAMETER

TEST CONDITIONS

V

UNIT

Positi

V

N

V

Hyst

V

V

V

V

V

PARAMETER

V

UNIT

tpdA

Y

ns

ttY

ns

SN54HCT14, SN74HCT14

HEX SCHMITT-TRIGGER INVERTERS

SCLS225C – JULY 1995 – REVISED FEBRUAR Y 2000

electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)

CC

V

T+

ve-going

threshold

V

T–

egative-going

threshold

∆V

T

eresis

(VT+ – VT–)

OH

OL

I

I

I

CC

†

∆I

CC

C

†

i

This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.

IOH = –20 µA 4.5 V 4.4 4.49 4.4 4.4
IOH = –4 mA 4.5 V 3.98 4.3 3.7 3.84
IOL = 20 µA 4.5 V 0.001 0.1 0.1 0.1
IOL = 4 mA 4.5 V 0.17 0.26 0.4 0.33
VI = VCC or GND 5.5 V ±0.1 ±1 ±1 µA
VI = VCC or GND, IO = 0 5.5 V 2 40 20 µA
One input at 0.5 V or 2.4 V,

Other inputs at GND or V
VI = VCC or GND 5 V 3 10 10 10 pF

CC

4.5 V 1.2 1.5 1.9 1.2 1.9 1.2 1.9

5.5 V 1.4 1.7 2.1 1.4 2.1 1.4 2.1

4.5 V 0.5 0.9 1.2 0.5 1.2 0.5 1.2

5.5 V 0.6 1 1.4 0.6 1.4 0.6 1.4

4.5 V 0.4 0.6 1.4 0.4 1.4 0.4 1.4

5.5 V 0.4 0.65 1.5 0.4 1.5 0.4 1.5

5.5 V 0.2 2.4 3 2.9 mA

TA = 25°C SN54HCT14 SN74HCT14

MIN TYP MAX MIN MAX MIN MAX

switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)

FROM TO

(INPUT) (OUTPUT)

CC

4.5 V 20 32 48 40

5.5 V 18 30 45 38

4.5 V 7 15 22 19

5.5 V 6 14 20 17

TA = 25°C SN54HCT14 SN74HCT14

MIN TYP MAX MIN MAX MIN MAX

operating characteristics, TA = 25°C

PARAMETER TEST CONDITIONS TYP UNIT

C

Power dissipation capacitance No load 10 pF

pd

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3

SN54HCT14, SN74HCT14
HEX SCHMITT-TRIGGER INVERTERS

SCLS225C – JULY 1995 – REVISED FEBRUAR Y 2000

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

LOAD CIRCUIT

Input

NOTES: A. CL includes probe and test-fixture capacitance.

B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following

C. The outputs are measured one at a time with one input transition per measurement.
D. t

90% 90%

t

r

VOLTAGE WA VEFORM

INPUT RISE AND FALL TIMES

characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.

and t

PLH

PHL

Test
Point

CL = 50 pF
(see Note A)

are the same as tpd.

V

1.3 V1.3 V

CC

10%10%

0 V

t

f

Figure 1. Load Circuit and Voltage Waveforms

Input

In-Phase

Output

Out-of-Phase

Output

PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES

1.3 V

t

PLH

90% 90%

t

PHL

1.3 V 1.3 V
10% 10%

VOLTAGE WAVEFORMS

3 V

1.3 V
0 V

t

PHL

V

1.3 V1.3 V

t

r

t

PLH

t

f

OH

10%10%

V

OL

t

f

V

OH

90%90%

V

OL

t

r

4

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SN54HCT14, SN74HCT14

HEX SCHMITT-TRIGGER INVERTERS

SCLS225C – JULY 1995 – REVISED FEBRUAR Y 2000

TYPICAL CHARACTERISTICS

SUPPLY CURRENT

INPUT VOLTAGE

0.5
VCC = 4.5 V

0.45

0.4

0.35

0.3

0.25

0.2

– Supply Current – mA

0.15

CC

I

0.1

0.05
0

0 0.45 0.9 1.35 1.8 2.26 2.7

VI – Input Voltage – V

OUTPUT VOLTAGE

INPUT VOLTAGE

6

VCC = 4.5 V

5

vs

VI = 0 to V

VI = VCC to 0

vs

CC

3.16 3.61 4

SUPPLY CURRENT

INPUT VOLTAGE

0.5
VCC = 5.5 V

0.45

0.4

0.35

0.3

0.25

0.2

– Supply Current – mA

0.15

CC

I

0.1

0.05
0

0 0.55 1.1 1.66 2.2 2.76 3.3

VI – Input Voltage – V

OUTPUT VOLTAGE

INPUT VOLTAGE

6

5

vs

VI = 0 to V

VI = VCC to 0

vs

CC

3.86 4.4 4.97

VCC = 5.5 V

4

3

2

– Output Voltage – V

O

1

V

0

–1

0 0.75 1.5 2.27

VI – Input Voltage – V

VI = Down

VI = Up

3 3.77

4

3

2

– Output Voltage – V

O

1

V

0

–1

0 0.92 1.84 2.76

VI = Down

VI = Up

3.68 4.6

VI – Input Voltage – V

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5

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Copyright  2000, Texas Instruments Incorporated