SN55ALS194, SN75ALS194

QUADRUPLE DIFFERENTIAL LINE DRIVERS

SLLS009D – OCTOBER 1985 – REVISED MAY 1995

4

POST OFFICE BOX 655303

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS†

MIN

TYP‡

MAX

UNIT

VIK

Input clamp voltage

VCC = MIN,

II = – 18 mA

– 1.5

V

VOH

High level output voltage

VCC = MIN,

SN55ALS194

2.4

V

VOH

High-level output voltage

CC

,

IOH = –20 mA

SN75ALS194

2.5

V

VOL

Low-level output voltage

VCC = MIN,

IOL = MAX

0.5

V

VO

Output voltage

IO = 0

0

6

V

|VOD1|

Differential output voltage

IO = 0

1.5

6

V

|VOD2|

Differential output voltage

1/2 VOD1

V

|VOD2|

Differential output voltage

OD1

or 2§

V

∆|VOD|

Change in magnitude of

differential output voltage¶

RL = 100 Ω,

See Figure 1

± 0.4

V

VOC

Common-mode output voltage

± 3

V

∆|VOC|

Change in magnitude of

common-mode output voltage¶

± 0.4

V

IO

Output current with power off

VCC =0

VO = 6 V

100

µA

IO

Output current with power off

VCC = 0

VO = – 0.25 V

– 100

µA

I

VCC = MAX

VO = 2.7 V

100

IOZ

High-impedance-state output current

VCC = MAX,

Output enables at 0.8 V

VO = 0.5 V

– 100

µA

II

Input current at maximum input voltage

VCC = MAX,

VI = 5.5 V

100

µA

IIH

High-level input current

VCC = MAX,

VI = 2.7 V

50

µA

IIL

Low-level input current

VCC = MAX,

VI = 0.5 V

– 200

µA

IOS

Short-circuit output current#

VCC = MAX,

VI = 2 V

–40

– 140

mA

ICC

Supply current (all drivers)

VCC = MAX,

All outputs disabled

26

45

mA

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

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

§ The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater.

¶

∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to

a low level.

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

PARAMETER

TEST

SN55ALS194

SN75ALS194

UNIT

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

C15 F

6

13

6

13

ns

tPHL

Propagation delay time, high- to low-level output

CL = 15 pF,

See Figure 2

9

14

9

14

ns

Output-to-output skew

See Figure 2

3.5

6

3.5

6

ns

tt(OD) Differential output transition time

CL = 15 pF,

See Figure 3

8

14

8

14

ns

tPZH

Output enable time to high level

9

12

9

12

ns

tPZL

Output enable time to low level

CL = 15 pF,

12

20

12

20

ns

tPHZ

Output disable time from high level

L

See Figure 4

9

15

9

14

ns

tPLZ

Output disable time from low level

12

15

12

15

ns