ST26C31

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Note 2: See EIA Specification RS422 for exact test conditions.

Note 3: Measured per pin input. All other input at VCC or GND.

Note 4: This is the current sourced when a high output is shorted to ground. Only one output at time should be shorted.

Note 1: Unless otherwise specified, min/max limits apply across the recommended operating temperature range. All typical are given for

Note 2: Skewis defined as the difference in propagation delays between complementary outputs at the 50% point.

Note 3: Output disable time is the delay from the control input being switched to the output transistors tuming off. The actual disable times

are less than indicated due to the delay added by RC time constant of the load.

2

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

High Level Input Voltage

2

V

Low Level Input Voltage

0.8

V

High Level Output Voltage

2.5

3.4

V

Low Level Output Voltage

0.3

0.5

V

Differential Output Voltage

2

3.1

V

Difference in Differential

Output Voltage

0.4

V

Common Mode Output

Voltage

1.8

3

V

Difference in Common

Mode Output Voltage

0.4

V

Input Current

±1

µA

Quiescent Supply Current

(Note 2)

200

500

µA

0.8

2

mA

3-STATE Output Leakage

Current

±0.5

±5

µA

-30

-150

mA

Power Off Output Leakage

Current (Note 2)

100

µA

-100

µA

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

Propagation Delay Input to

Output

S1 Open

2

6

11

ns

Skew

(Note 2)

S1 Open

0.5

2

ns

Differential Output Rise and

Fall Times

S1 Open

6

10

ns

Output Enable Time

S1 Closed

11

19

ns

Output Enable Time

S1 Closed

13

21

ns

Output Disable Time

(Note 3)

S1 Closed

5

9

ns

Output Disable Time

(Note 3)

S1 Closed

7

11

ns

Power Dissipation

Capacitance (Note 4)

50

pF

Input Capacitance

6

pF