SP483E_05 Datasheet, PDF (2/11 Pages) Sipex Corporation – Enhanced Low EMI Half-Duplex RS-485 Transceiver

ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
V_CC............................................................................................................+7V
Input Voltages
Logic........................................................-0.3V to (V_CC+0.5V)
Drivers..................................................-0.3V to (V_CC+0.5V)
Receivers................................................................. ±15V
Output Voltages
Logic........................................................-0.3V to (V_CC+0.5V)
Drivers...................................................................... ±15V
Receivers............................................-0.3V to (V_CC+0.5V)
Storage Temperature.......................................................-65˚C to +150˚C
Power Dissipation...........................................................................500mW
SPECIFICATIONS
T_MIN to T_MAX and V_CC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
SP483E DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
GND
2
TYP.
Differential Output Voltage
1.5
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
2.0
Input Low Voltage
Input Current
Driver Input
Control Lines
Driver Short-Circuit Current
V_OUT = HIGH
V_OUT = LOW
SP483E DRIVER
AC Characteristics
Maximum Data Rate
250
Driver Input to Output
250
800
Driver Input to Output
250
800
Driver Skew
100
Driver Rise or Fall Time
250
Driver Enable to Output High 250
Driver Enable to Output Low 250
Driver Disable Time from Low 300
Driver Disable Time from High 300
SP481E/SP485E RECEIVER
DC Characteristics
Differential Input Threshold -0.2
Input Hysteresis
20
Output Voltage High
3.5
Output Voltage Low
Three-State (High Impedance)
Output Current
Input Resistance
12
15
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short-Circuit Current
7
MAX. UNITS CONDITIONS
V_CC Volts
V_CC Volts
V_CC Volts
Unloaded; R = ∞ ; see Figure 1
with load; R = 50Ω; (RS-422);
see Figure 1
with load; R = 27Ω; (RS-485); see Figure 1
0.2 Volts
3 Volts
Volts
0.8 Volts
10µA
1µA
±250 mA
±250 mA
R = 27Ω or R = 50Ω; see Figure 1
R = 27Ω or R = 50Ω; see Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
DI
DE, RE
-7V ≤ V_O ≤ +12V
-7V ≤ V_O ≤ +12V
Kbps
2000 ns
2000 ns
800 ns
2000 ns
2000 ns
2000 ns
3000 ns
3000 ns
RE = 5V, DE = 5V; R_DIFF = 54Ω,
C_L1 = C_L2 = 100pF
t_PLH; R_DIFF = 54Ω, C_L1 = C_L2 = 100pF;
see Figures 3 and 5
t_PHL; R_DIFF = 54Ω, C_L1 = C_L2 = 100pF;
see Figures 3 and 5
see Figures 3 and 5,
t_SKEW = | t_DPLH - t_DPHL |
From 10% to 90%; R_DIFF = 54Ω,
C_L1 = C_L2 = 100pF; see Figures 3 and 6
C_L = 100pF; see Figures 4 & 6; S₂ closed
C_L = 100pF; see Figures 4 & 6; S₁ closed
C_L = 15pF; see Figures 2 & 8; S₁ closed
C_L = 15pF; see Figures 2 & 8; S₂ closed
+0.2 Volts
mV
Volts
0.4 Volts
±1 µA
kΩ
+1.0 mA
-0.8 mA
95 mA
-7V ≤ V_CM ≤ +12V
V_CM = 0V
I_O = -4mA, V_ID = +200mV
I_O = +4mA, V_ID = -200mV
0.4V ≤ V_O ≤ 2.4V; RE = 5V
-7V ≤ V_CM ≤ +12V
DE = 0V, V_CC = 0V or 5.25V, V_IN = 12V
DE = 0V, V_CC = 0V or 5.25V, V_IN = -7V
0V ≤ V_CM ≤ V_CC
SP483EDS/05
SP483E Low EMI Half-Duplex RS485 Transceiver
© Copyright 2000 Sipex Corporation
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