8339 Datasheet, PDF (3/13 Pages) STMicroelectronics – ±15KV ESD PROTECTED, LOW POWER RS-485/RS-422 TRANSCEIVER

ST485E
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
Symbol
Parameter
ESD ESD Protection Voltage
ESD ESD Protection Voltage
Test Conditions
Human Body Model
IEC-1000-4-2
Min. Typ. Max. Unit
±15
KV
±8
KV
DC ELECTRICAL CHARACTERISTICS
(V_CC = 5V ± 5%, T_A = T_MIN to T_MAX , unless otherwise specified. Typical values are referred to T_A = 25°C)
(See Note 1)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
V_OD1
V_OD2
∆V_OD
V_OC
∆V_OC
V_IH
V_IL
I_IN1
I_IN2
V_TH
∆V_TH
V_OH
V_OL
I_OZR
R_IN
I_CC
I_OSD1
I_OSD2
I_OSR
Differential Driver Output
(No Load)
Differential Driver Output
(With Load)
Change in Magnitude of
Driver Differential Output
Voltage for Complementary
Output States
Driver Common-Mode
Output Voltage
Change in Magnitude of
Driver Common-Mode
Output Voltage for
Complementary Output
States
Input High Voltage
R_L = 27Ω (RS-485) (See Fig. 1)
R_L = 50Ω (RS-422) (See Fig. 1)
R_L = 27Ω or 50Ω (See Fig. 1)
R_L = 27Ω or 50Ω (See Fig. 1)
R_L = 27Ω or 50Ω (See Fig. 1)
RE, DE, DI
Input Low Voltage
RE, DE, DI
Input Current
RE, DE, DI
Input Current (A, B)
V_CM = 0V or 5.25V
V_IN = 12V
V_IN = -7V
V_DE = 0V
Receiver Differential
Threshold Voltage
V_CM = -7 to 12V
Receiver Input Hysteresis V_CM = 0V
Receiver Output High
Voltage
I_O = -4mA V_ID = 200mV
Receiver Output Low
Voltage
I_O = 4mA V_ID = -200mV
3-State (High Impedance) V_O = 0.4 to 2.4V
Output Current at Receiver
Receiver Input Resistance V_CM = -7 to 12V
No Load Supply Current
(Note 2)
V_RE = 0V or V_CC
V_DE = V_CC
V_DE = 0V
Driver Short-Circuit Current, V_O = -7 to 12V (Note 3)
V_O=High
Driver Short-Circuit Current, V_O = -7 to 12V (Note 3)
V_O=Low
Receiver Short-Circuit
Current
V_O = 0V to V_CC
5
V
1.5
5
V
5
V
0.2
V
3
V
0.2
V
2.0
V
0.8
V
±2
µA
1
mA
-0.8 mA
-0.2
0.2
V
70
mV
3.5
V
0.4
V
±1
µA
24
KΩ
400 900
µA
300 500
µA
35
250 mA
35
250 mA
7
95
mA
Note 1: All currents into device pins are positive; all cuttents out of device pins are negative; all voltages are referenced to device ground
unless specified.
Note 2: Supply current specification is valid for loaded transmitters when V_DE = 0V
Note 3: Applies to peak current. See typical Operating Characteristics.
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