SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A

DUAL 4-BIT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SDAS036D – APRIL 1982 – REVISED AUGUST 1995

3

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54ALS873B

SN74ALS873B

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

–1.2

–1.2

V

VCC = 4.5 V to 5.5 V,

IOH = – 0.4 mA

VCC –2

VCC –2

VOH

VCC =4 5V

IOH = – 1 mA

2.4

3.3

V

VCC = 4.5 V

IOH = – 2.6 mA

2.4

3.2

VOL

VCC =4 5V

IOL = 12 mA

0.25

0.4

0.25

0.4

V

VOL

VCC = 4.5 V

IOL = 24 mA

0.35

0.5

V

IOZH

VCC = 5.5 V,

VO = 2.7 V

20

20

µA

IOZL

VCC = 5.5 V,

VO = 0.4 V

–20

–20

µA

II

VCC = 5.5 V,

VI = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

– 0.2

– 0.2

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–20

–112

–30

–112

mA

Outputs high

11

21

11

21

ICC

VCC = 5.5 V

Outputs low

16

29

16

29

mA

Outputs disabled

20

31

20

31

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

‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

SN54ALS873B

SN74ALS873B

UNIT

MIN

MAX

MIN

MAX

UNIT

t

Pulse duration

CLR low

15

15

ns

tw

Pulse duration

LE high

10

10

ns

tsu

Setup time, data before LE

↓

10

10

ns

th

Hold time, data after LE

↓

7

7

ns