SN54LV161A, SN74LV161A

4BIT SYNCHRONOUS BINARY COUNTERS

SCLS404F − APRIL 1998 − REVISED DECEMBER 2005

11

POST OFFICE BOX 655303

switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

TO

LOAD

TA = 25°C

SN54LV161A

SN74LV161A

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

LOAD

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

fmax

CL = 15 pF

135*

220

115*

115

MHz

fmax

CL = 50 pF

95

165

85

85

MHz

Q

4.5*

8.1*

1*

9.5*

1

9.5

tpd

CLK

RCO

(count mode)

5.1*

8.1*

1*

9.5*

1

9.5

tpd

CLK

RCO

(preset mode)

CL = 15 pF

6.3*

10.3*

1*

12*

1

12

ns

ENT

RCO

L

4.8*

8.1*

1*

9.5*

1

9.5

tPHL

CLR

Q

4.9*

9*

1*

10.5*

1

10.5

tPHL

CLR

RCO

5.5*

8.6*

1*

10*

1

10

Q

5.9

10.1

1

11.5

1

11.5

tpd

CLK

RCO

(count mode)

6.6

10.1

1

11.5

1

11.5

tpd

CLK

RCO

(preset mode)

CL = 50 pF

7.8

12.3

1

14

1

14

ns

ENT

RCO

L

6.1

10.1

1

11.5

1

11.5

tPHL

CLR

Q

6.3

11

1

12.5

1

12.5

tPHL

CLR

RCO

6.9

10.6

1

12

1

12

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

PARAMETER

SN74LV161A

UNIT

PARAMETER

MIN

TYP

MAX

UNIT

VOL(P)

Quiet output, maximum dynamic VOL

0.3

0.8

V

VOL(V)

Quiet output, minimum dynamic VOL

−0.2

−0.8

V

VOH(V)

Quiet output, minimum dynamic VOH

3

V

VIH(D)

High-level dynamic input voltage

2.31

V

VIL(D)

Low-level dynamic input voltage

0.99

V

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

PARAMETER

TEST CONDITIONS

VCC

TYP

UNIT

Cpd

Power dissipation capacitance

CL = 50 pF,

f = 10 MHz

3.3 V

23.6

pF

Cpd

Power dissipation capacitance

CL = 50 pF,

f = 10 MHz

5 V

25.8

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.