SN54HCT125, SN74HCT125

QUADRUPLE BUS BUFFER GATES

WITH 3-STATE OUTPUTS

SCLS069C – NOVEMBER 1988 – REVISED MAY 1997

3

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

SN54HCT125

SN74HCT125

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

VOH

VI =VIH or VIL

IOH = –20 µA

45 V

4.4

4.499

4.4

4.4

V

VOH

VI = VIH or VIL

IOH = –6 mA

4.5 V

3.98

4.3

3.7

3.84

V

VOL

VI =VIH or VIL

IOL = 20 µA

45 V

0.001

0.1

0.1

0.1

V

VOL

VI = VIH or VIL

IOL = 6 mA

4.5 V

0.17

0.26

0.4

0.33

V

II

VI = VCC or 0

5.5 V

±0.1

±100

±1000

±1000

nA

IOZ

VO = VCC or 0,

VI = VIH or VIL

5.5 V

±0.01

±0.5

±10

±5

µA

ICC

VI = VCC or 0,

IO = 0

5.5 V

8

160

80

µA

∆ICC†

One input at 0.5 V or 2.4 V,

Other inputs at 0 or VCC

5.5 V

1.4

2.4

3

2.9

mA

Ci

4.5 V

to 5.5 V

3

10

10*

10

pF

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

† 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.

(unless otherwise noted) (see Figure 1)

PARAMETER

FROM

TO

VCC

TA = 25°C

SN54HCT125

SN74HCT125

UNIT

PARAMETER

(INPUT)

(OUTPUT)

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

t d

A

Y

4.5 V

15

26

39

33

ns

tpd

A

Y

5.5 V

12

23

35

30

ns

t

OE

Y

4.5 V

18

28

42

35

ns

ten

OE

Y

5.5 V

15

25

38

31

ns

tdi

OE

Y

4.5 V

15

26

39

33

ns

tdis

OE

Y

5.5 V

13

23

35

30

ns

tt

Any

4.5 V

8

15

22

19

ns

tt

Any

5.5 V

7

14

21

17

ns

(unless otherwise noted) (see Figure 1)

PARAMETER

FROM

TO

VCC

TA = 25°C

SN54HCT125

SN74HCT125

UNIT

PARAMETER

(INPUT)

(OUTPUT)

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

t d

A

Y

4.5 V

19

36

58

46

ns

tpd

A

Y

5.5 V

16

32

48

42

ns

t

OE

Y

4.5 V

25

40

60

50

ns

ten

OE

Y

5.5 V

21

35

53

43

ns

tt

Any

4.5 V

17

42

63

53

ns

tt

Any

5.5 V

14

38

57

48

ns

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

No load

35

pF

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.