Datasheet

DS89C21
www.ti.com 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
V
IH
Input Voltage HIGH 2.0 V
CC
V
V
IL
Input Voltage LOW DI GND 0.8 V
I
IH
, I
IL
Input Current V
IN
= V
CC
, GND, 2.0V, 0.8V 0.05 ±10 μA
V
CL
Input Clamp Voltage I
IN
= −18 mA −1.5 V
V
OD1
Unloaded Output Voltage No Load DO, 4.2 6.0 V
DO*
V
OD2
Differential Output Voltage R
L
= 100Ω 2.0 3.0 V
ΔV
OD2
Change in Magnitude of V
OD2
5.0 400 mV
for Complementary Output States
V
OD3
Differential Output Voltage R
L
= 150Ω 2.1 3.1 V
V
OD4
Differential Output Voltage R
L
= 3.9 kΩ 4.0 6.0 V
V
OC
Common Mode Voltage R
L
= 100Ω 2.0 3.0 V
ΔV
OC
Change in Magnitude of V
OC
2.0 400 mV
for Complementary Output States
I
OSD
Output Short Circuit Current V
OUT
= 0V −30 −115 −150 mA
I
OFF
Output Leakage Current V
CC
= 0V V
OUT
= +6V 0.03 +100 μA
V
OUT
= −0.25V −0.08 −100 μA
RECEIVER CHARACTERISTICS
V
TL
, V
TH
Differential Thresholds V
IN
= +7V, 0V, −7V RI, −200 ±25 +200 mV
RI*
V
HYS
Hysteresis V
CM
= 0V 20 50 mV
R
IN
Input Impedance V
IN
= −7V, +7V, Other = 0V 5.0 9.5 kΩ
I
IN
Input Current Other Input = 0V, V
IN
= +10V +1.0 +1.5 mA
V
CC
= 5.5V and V
IN
= +3.0V 0 +0.22 mA
V
CC
= 0V V
IN
= +0.5V −0.04 mA
V
IN
= −3V 0 −0.41 mA
V
IN
= −10V −1.25 −2.5 mA
V
OH
Output HIGH Voltage I
OH
= −6 mA V
DIFF
= +1V RO 3.8 4.9 V
V
DIFF
= OPEN 3.8 4.9 V
V
OL
Output LOW Voltage I
OL
= +6 mA, V
DIFF
= −1V 0.08 0.3 V
I
OSR
Output Short Circuit Current V
OUT
= 0V −25 −85 −150 mA
DRIVER AND RECEIVER CHARACTERISTICS
I
CC
Supply Current No Load DI = V
CC
or GND V
CC
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) All typicals are given for V
CC
= 5.0V and T
A
= 25°C.
Copyright © 1998–2013, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: DS89C21