SP3080E Datasheet, PDF (5/25 Pages) Sipex Corporation – Advanced-Failsafe RS-485/RS-422 Transceiver 1/8th Unit Load, Slew-Limited, ±15kV ESD-Protected

PARAMETER
Digital Input Signals: DI, DE, RE
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
High, Vih
2.0
Logic input thresholds
Low, Vil
Logic Input Current
Ta = 25°C, after first transition
Input Hysteresis
Ta = 25°C
Driver
Differential Driver Output (Vod)
No Load
Rl=100Ω (RS-422)
2
Differential Driver Output, Test 1
Rl=54Ω (RS-485)
1.5
Differential Driver Output, Test 2
Vcm = -7 to +12V
1.5
Change in Magnitude of Differential Output
Voltage (ΔVod) (Note 1)
Rl=54 or 100Ω
Driver Common Mode Output Voltage (Vcc) Rl=54 or 100Ω
1
V
0.8
±1
μA
100
mV
Vcc
V
Vcc
2.7
Vcc
V
Vcc
±0.2
V
3
V
Change in Common Mode Output Voltage
(ΔVoc)
Rl=54 or 100Ω
±0.2
V
Driver Short Circuit Current Limit
-7V ≤ Vout ≤ +12V (Note 5)
±250
mA
Output Leakage Current (Full-duplex versions,
Y & Z pins) Note 2
DE=0,
RE=0,
Vcc=0 or
5.5V
Vout=12V
Vout= -7V
-100
125
μA
Receiver
Receiver Input Resistance
-7V ≤ Vcm ≤ 12V
96
KΩ
Input Current (A, B pins)
DE=0,
RE=0,
Vcc=0 or
5.5V
Vin= 12V
Vin= -7V
-100
125
μA
Receiver Differential Threshold (VA-VB)
-7V ≤ Vcm ≤ 12V
-200
-125
-40
mV
Receiver Input Hysteresis
25
mV
Receiver _Voh
Output
Voltage Vol
Iout = -8mA, Vid = -40mV
Iout = 8mA, Vid = -200mV
Vcc-1.5
V
0.4
High-Z Receiver Output Current
Vcc =5.5V, 0 ≤ Vout ≤ Vcc
±1
μA
Receiver Output Short Circuit Current
Supply and Protection
Supply
Current
IQ, Active Mode
Shutdown Mode
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
0V ≤ Vro ≤ Vcc
No load, DI=0 or Vcc
DE=0, RE=Vcc, DI=Vcc
Junction temperature
± 95
mA
400
900
μA
1
μA
165
o_C
15
Notes:
1. Change in Magnitude of Differential Output Voltage and Change in Magnitude of Common Mode Output Voltage are the changes in output voltage when DI input changes state.
2. Except devices which don’t have DE or RE inputs.
3. The transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns the device does not enter shutdown. If the enable inputs
are held in this state for at least 600ns the device is assured to be in shutdown. In this low power mode most circuitry is disabled and supply current is typically 1nA.
4.Characterized, not 100% tested.
5. See Driver Short Circuit Limit Test Circuit.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP3080E-SP3088E_100_062309