DS89C21

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SNLS091C – JUNE 1998 – REVISED APRIL 2013

Electrical Characteristics

(1) (2)

Over recommended supply voltage and operating temperature ranges, unless otherwise specified.

Symbol

Parameter

Conditions

Pin

Min

Typ

Max

Units

DRIVER CHARACTERISTICS

Input Voltage HIGH

2.0

V

Input Voltage LOW

DI

GND

0.8

V

Input Current

0.05

±10

μA

Input Clamp Voltage

−1.5

V

Unloaded Output Voltage

No Load

DO,

4.2

6.0

V

DO*

Differential Output Voltage

2.0

3.0

V

5.0

400

mV

for Complementary Output States

Differential Output Voltage

2.1

3.1

V

Differential Output Voltage

4.0

6.0

V

Common Mode Voltage

2.0

3.0

V

2.0

400

mV

for Complementary Output States

Output Short Circuit Current

−30

−115

−150

mA

Output Leakage Current

0.03

+100

μA

−0.08

−100

μA

RECEIVER CHARACTERISTICS

Differential Thresholds

RI,

−200

±25

+200

mV

RI*

Hysteresis

20

50

mV

Input Impedance

5.0

9.5

k

Ω

Input Current

Other Input = 0V,

+1.0

+1.5

mA

0

+0.22

mA

−0.04

mA

0

−0.41

mA

−1.25

−2.5

mA

Output HIGH Voltage

RO

3.8

4.9

V

3.8

4.9

V

Output LOW Voltage

0.08

0.3

V

Output Short Circuit Current

−25

−85

−150

mA

DRIVER AND RECEIVER CHARACTERISTICS

Supply Current

No Load

3.0

6

mA

DI = 2.4V or 0.5V

3.8

12

mA

(1)

Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground

unless otherwise specified.

(2)

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