UM3491 Datasheet, PDF (3/14 Pages) Union Semiconductor, Inc. – +3.3V Low Power，±15kV ESD-Protected, Fail-Safe, RS-422 Transceivers in SOP14/DIP14

UM3491
DC Electrical Characteristics (Continued)
(V_CC = +3.3V ± 5%, T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at V_CC = +3.3V
and T_A = +25°C.) (Note 1)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
DRIVER
Driver Short-Circuit Output
Current (Note 3)
V_OD1
-7V≤V_OUT≤V_CC
0V≤V_OUT≤12V
-250
250 ^mA
RECEIVER
Input Current (A and B)
DE = GND, V_IN = 12V
I_IN
V_CC = GND or
3.465V
V_IN = -7V
125 µA
-75
Receiver Differential
Threshold Voltage
V_TH
-7V≤V_CM≤12V
-200 -125 -50 mV
Receiver Input Hysteresis 　ΔV_TH
Receiver Output High Voltage V_OH
25
I_O = -4mA, V_ID = -50mV
VCC
-0.4
Receiver Output Low Voltage V_OL
I_O = 4mA, V_ID = -200mV
mV
V
0.4 V
Three-State Output Current at
Receiver
I_OZR
Receiver Input Resistance
R_IN
0.4V ≤ V_O ≤ 2.4V
-7V≤V_CM≤12V
96
±1 µA
kΩ
Receiver Output Short Circuit
Current
I_OSR
0V≤V_RO ≤V_CC
±7
SUPPLY CURRENT
Supply Current
No load,
RE = V_CC
I_CC DE =DI=GND
or V_CC
RE =GND
±95 mA
20 60
µA
180 300
Supply Current in Shutdown
Mode
I_SHDN
DE = GND, V_RE = V_CC
0.001 10 µA
ESD Protection for Y, Z, A, B
Human Body Model
±15
kV
Note 1: All currents into the device are positive; all currents out of the device are negative. All
voltages are referred to device ground unless otherwise noted.
Note 2: ΔV_OD and ΔV_OC are the changes in V_OD and V_OC, respectively, when the DI input
changes state.
Note 3: Maximum current level applies to peak current just prior to foldback-current limiting;
minimum current level applies during current limiting.
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http://www.union-ic.com Rev.02 Jun.2012
3/14