SP1481E Datasheet, PDF (2/11 Pages) Sipex Corporation – ±15kV Enhanced Low Power Half-Duplex RS-485 Transceivers

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 per Package
8-pin NSOIC (derate 6.60mW/^oC above +70^oC)...........................550mW
8-pin PDIP (derate 11.8mW/^oC above +70^oC)............................1000mW
T_MIN to T_MAX and V_CC = 5V ± 5% unless otherwise noted.
PARAMETERS
SP1481E DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
MIN.
3.5
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 Short-Circuit Current
V_OUT = HIGH
V_OUT = LOW
SP1481E DRIVER
AC Characteristics
Maximum Data Rate
20
Driver Input to Output
10
30
10
Driver Skew
3
Driver Rise or Fall Time
8
Driver Enable to Output High
40
Driver Enable to Output Low
40
Driver Disable Time from Low
40
Driver Disable Time from High
40
ELECTRICAL CHARACTERISTICS
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
±10 µA
±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
-7V ≤ V_O ≤ +12V
-7V ≤ V_O ≤ +12V
Mbps
40 ns
ns
ns
20 ns
70 ns
70 ns
70 ns
70 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_LI = C_L2 = 100pF;
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 & 6
C_L = 100pF; see Figures 4 & 6; S₂
closed
C_L = 100pF; see Figures 4 & 6; S₁
closed
C_L = 100pF; see Figures 4 & 6; S₁
closed
C_L = 100pF; see Figures 4 & 6; S₂
closed
Rev:B Date: 02/26/04
SP1481E Low Power Half-Duplex RS485 Transceivers
2
© Copyright 2004 Sipex Corporation