SN54165, SN54LS165A, SN74165, SN74LS165A

PARALLEL-LOAD 8-BIT SHIFT REGISTERS

SDLS062D – OCTOBER 1976 – REVISED FEBRUARY 2002

7

POST OFFICE BOX 655303

recommended operating conditions

SN54LS165A

SN74LS165A

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.75

5

5.25

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.7

0.8

V

IOH

High-level output current

–0.4

–0.4

mA

IOL

Low-level output current

4

8

mA

fclock

Clock frequency

0

25

0

25

MHz

t (l k)

Width of clock input pulse (see Figure 2)

Clock high

15

15

ns

tw(clock)

Width of clock input pulse (see Figure 2)

Clock low

25

25

ns

t (l d)

Width of load input pulse

Clock high

25

25

ns

tw(load)

Width of load input pulse

Clock low

17

17

ns

tsu

Clock-enable setup time (see Figure 2)

30

30

ns

tsu

Parallel input setup time (see Figure 2)

10

10

ns

tsu

Serial input setup time (see Figure 2)

20

20

ns

tsu

Shift setup time (see Figure 2)

45

45

ns

th

Hold time at any input

0

0

ns

TA

Operating free-air temperature

–55

125

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS†

SN54LS165A

SN74LS165A

UNIT

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

VIK

VCC = MIN,

II = –18 mA

–1.5

–1.5

V

VOH

VCC = MIN,

VIH = 2 V,

VIL = MAX,

IOH = –0.4 mA

2.5

3.5

2.7

3.5

V

VOL

VCC = MIN

VIH =2V

VIL = MAX

IOL = 4 mA

0.25

0.4

0.25

0.4

V

VOL

VCC = MIN,

VIH = 2 V,

VIL = MAX

IOL = 8 mA

0.35

0.5

V

II

VCC = MAX,

VI = 7 V

0.1

0.1

mA

IIH

VCC = MAX,

VI = 2.7 V

20

20

µA

IIL

VCC = MAX,

VI = 0.4 V

–0.4

–0.4

mA

IOS§

VCC = MAX

–20

–100

–20

–100

mA

ICC

VCC = MAX,

See Note 4

18

30

18

30

mA

NOTE 4. With the outputs open, CLK INH and CLK at 4.5 V, and a clock pulse applied to SH/LD, ICC is measured first with the parallel inputs

at 4.5 V, then with the parallel inputs grounded.

† For conditions shown as MIN or MAX, use the appropriate values specified under recommended operating conditions.

‡ All typical values are at VCC = 5 V, TA = 25°C.

§ Not more than one output should be shorted at a time, and the duration of the short-circuit should not exceed one second.

The SN54165 and SN74165 devices

are obsolete and are no longer supplied.