SN75ALS173

QUADRUPLE DIFFERENTIAL LINE RECEIVER

SLLS132C – SEPTEMBER 1991 – REVISED MAY 1995

4

POST OFFICE BOX 655303

electrical characteristics over recommended ranges of common-mode input voltage, supply

voltage, and operating free-air temperature (unless otherwise noted) (see Note 3)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIT +

Positive-going input threshold

voltage

200

mV

VIT –

Negative-going input threshold

voltage

– 200‡

mV

Vhys Hysteresis voltage (VIT + – VIT –)

50

mV

VIK

Input clamp voltage

G, G

II = – 18 mA

– 1.5

V

VOH

High-level output voltage

VID = 200 mV,

IOH = – 400 µA, See Figure 1

2.7

V

VOL

Low-level output voltage

VID = – 200 mV, IOL = 8 mA,

See Figure 1

0.45

V

IOZ

High-impedance-state output current

VO = 0.4 V to 2.4 V

±20

µA

II

Line input current

Other input at 0 V

VI = 12 V

1

mA

II

Line input current

Other input at 0 V

VI = – 7 V

– 0.8

mA

IIH

High-level input current

G, G

VIH = 2.7 V

20

µA

IIL

Low-level input current

G, G

VIL = 0.4 V

– 100

µA

ri

Input resistance

12

k

Ω

IOS

Short-circuit output current

See Note 4

–15

–85

mA

ICC

Supply current (total package)

No load,

Outputs enabled

16

24

mA

ICC

Supply current (total package)

No load,

Outputs disabled

18

27

mA

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

‡ The algebraic convention, in which the less positive (more negative) limit is designated as minimum, is used in this data sheet for threshold voltage

levels only.

NOTES:

3. Refer to ANSI Standard RS-485 for exact conditions.

4. The duration of the short circuit should not cause the maximum package power dissipation to be exceeded.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPHL

Propagation delay time, high- to low-level output

VID = – 2.5 V to 2.5 V,

9

18

27

ns

tPLH

Propagation delay time, low- to high-level output

ID

,

See Figure 2

9

18

27

ns

tPZH

Output enable time to high level

See Figure 3

4

12

18

ns

tPZL

Output enable time to low level

See Figure 4

6

13

21

ns

tPHZ

Output disable time from high level

See Figure 3

10

21

27

ns

tPLZ

Output disable time from low level

See Figure 4

8

15

25

ns

PARAMETER MEASUREMENT INFORMATION

VOH

(–)

IOH

(+)

IOL

VID

VOL

2 V