SN54AHCT14, SN74AHCT14

HEX SCHMITT-TRIGGER INVERTERS

SCLS246P – OCTOBER 1995 – REVISED JULY 2003

3

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

SN54AHCT14

SN74AHCT14

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

VT+

Positive going input

4.5 V

0.9

1.9

0.9

1.9

0.9

1.9

V

Positive-going input

threshold voltage

5.5 V

1

2.1

1

2.1

1

2.1

V

VT–

Negative going input

4.5 V

0.5

1.5

0.5

1.5

0.5

1.5

V

Negative-going input

threshold voltage

5.5 V

0.6

1.7

0.6

1.7

0.6

1.7

V

∆VT

Hysteresis

4.5 V

0.4

1.4

0.4

1.4

0.4

1.4

V

Hysteresis

(VT+ – VT–)

5.5 V

0.4

1.5

0.4

1.5

0.4

1.5

V

VOH

IOH = –50 mA

4.5 V

4.4

4.5

4.4

4.4

V

VOH

IOH = –8 mA

4.5 V

3.94

3.8

3.8

V

VOL

IOL = 50 mA

4.5 V

0.1

0.1

0.1

V

VOL

IOL = 8 mA

4.5 V

0.36

0.44

0.44

V

II

VI = 5.5 V or GND

0 V to 5.5 V

±0.1

±1*

±1

mA

ICC

VI = VCC or GND,

IO = 0

5.5 V

2

20

20

mA

∆ICC†

One input at 3.4 V,

Other inputs at VCC or GND

5.5 V

1.35

1.5

1.5

mA

Ci

VI = VCC or GND

5 V

2

10

10

pF

* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.

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

switching characteristics over recommended operating free-air temperature range

PARAMETER

FROM

TO

LOAD

TA = 25°C

SN54AHCT14

SN74AHCT14

UNIT

PARAMETER

(INPUT)

(OUTPUT)

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

A

Y

CL =15 pF

4**

7**

1**

8**

1

8

ns

tPHL

A

Y

CL = 15 pF

4**

7**

1**

8**

1

8

ns

tPLH

A

Y

CL =50 pF

5.5

8

1

9

1

9

ns

tPHL

A

Y

CL = 50 pF

5.5

8

1

9

1

9

ns

** On products compliant to MIL-PRF-38535, this parameter is not production tested.

PARAMETER

SN74AHCT14

UNIT

PARAMETER

MIN

TYP

MAX

UNIT

VOL(P)

Quiet output, maximum dynamic VOL

0.9

V

VOL(V)

Quiet output, minimum dynamic VOL

–0.7

V

VOH(V)

Quiet output, minimum dynamic VOH

4.3

V

VIH(D)

High-level dynamic input voltage

2.1

V

VIL(D)

Low-level dynamic input voltage

0.5

V

NOTE 5: Characteristics are for surface-mount packages only.

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

No load,

f = 1 MHz

12

pF