SN75186

QUADRUPLE DRIVER/RECEIVER WITH LOOPBACK

SLLS068C – FEBRUARY 1990 – REVISED MAY 1995

7

POST OFFICE BOX 655303

RECEIVER SECTION

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

temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIT+

Positive-going input threshold voltage

See Figure 5

1.3

2

2.5

V

VIT–

Negative-going input threshold voltage

See Figure 5

0.5

1

1.7

V

Vhys

Input hysteresis voltage (VIT+ – VIT–)

0.5

1

1.5

V

VOH

High level output voltage

VI = – 3 V or inputs open,

IOH = – 20 µA

3.5

V

VOH

High-level output voltage

IOH = – 4 mA,

See Note 7 and Figure 5

2.4

V

VOL

Low level output voltage

IOL = 4 mA,

VI = 3 V,

04

V

VOL

Low-level output voltage

OL

,

See Figure 5

I

,

0.4

V

IOS(H) Short-circuit output current at high level

VOH = 0,

See Figure 4

–20

–60

mA

IOS(L) Short-circuit output current at low level

VOL = VCC2,

See Figure 4

20

60

mA

ri

Input resistance

VI ≤ 25 V

3

k

Ω

ri

Input resistance

VI = 3 V to 25 V

7

k

Ω

† All typical values are at TA = 25°C.

NOTE 7: If the inputs are left unconnected, the receiver interprets this as a low input and the receiver outputs will remain in the high state.

switching characteristics over full recommended ranges of supply voltages and operating free-air

temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

tPLH

Propagation delay time, low- to high-level output

See Figure 6

2

6

µs

tPHL

Propagation delay time, high- to low-level output

See Figure 6

2

6

µs

tTLH

Transition time, low- to high-level output‡

CL =50 pF

See Figure 6

200

300

ns

tTHL

Transition time, high- to low-level output‡

CL = 50 pF,

See Figure 6

50

300

ns

tsk

 tPLH – tPHL 

0.1

1

µs

tw

Maximum pulse duration assumed to be noise§

Pulse amplitude = 5 V

1

2

4

µs

† All typical values are at TA = 25°C.

‡ Transition times are measured between 10% and 90% points on output waveform.

§ The receiver will ignore any positive- or negative-going pulse whose duration is less than the minimum value of tw and accept any positive- or

negative-going pulse whose duration is greater than the maximum value of tw.