ST75185C datasheet(8/22 Pages) STMICROELECTRONICS

8 / 22 page

Electrical characteristics

ST75185C

8/22

Note:

All typical values are at TA = 25 °C, VCC = 5 V, VDD = 9 V and VSS = -9 V

Table 10.

Receiver electrical characteristics over operating conditions

Symbol

Parameter

Test conditions

Value

Unit

Min.

Typ.

Max.

VT+

Positive going threshold voltage

(See Figure 9)2.2

2.4

VT-

Negative going threshold voltage

TA = 25 °C (See Figure 9)

0.75

0.97

Vhys

Input hysteresis (VT+ - VT-)

0.5

VOH

High level output voltage

IOH = -0.5mA

VIH = 0.75 V

2.6

Inputs Open

2.6

VOL

Low level output voltage

VI = 3 V

IOL = 10 mA

0.2

0.45

IIH

High level input current

VI = 25 V (See Figure 9)3.6

8.3

VI = 3 V

(See Figure 9)0.43

IIL

Low level input current

VI = -25 V (See Figure 9)

-3.6

-8.3

VI = -3 V (See Figure 9)

-0.43

IOS

Short-circuit output current

VI = 0 V

VO = 0 V

(See Figure 7)

-3.4

-12

Table 11.

Receiver switching characteristics

(VDD = 12 V, VSS = -12 V, VCC = 5 V TA = 25 °C)

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

tPLH

Propagation delay time low to high

level output

RL = 5 kΩ

CL = 50 pF

(See Figure 9)

400

1000

tPHL

Propagation delay time high to low

level output

RL = 5 kΩ

CL = 50 pF

(See Figure 9)

150

tTLH

Transition time low to high level

output

RL = 5 kΩ

CL = 50 pF

(See Figure 9)

200

525

tTHL

Transition time high to low level

output

RL = 5 kΩ

CL = 50 pF

(See Figure 9)

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