SP481R Datasheet, PDF (2/9 Pages) Sipex Corporation – High-Fanout 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
Storage Temperature..........................-65˚C to +150˚C
Power Dissipation
8-pin Plastic DIP...........................1000mW
8-pin Plastic N-SOIC.......................1000mW
Package Derating:
8-pin Plastic DIP
ø_JA....................................................62 °C/W
8-pin Plastic N-SOIC
ø_JA....................................................62 °C/W
Typically 25°C @ Vcc = +5V unless otherwise noted.
MIN.
LOGIC INPUTS
V_IL
V_IH
LOGIC OUTPUTS
V_OL
V_OH
RS-485 DRIVER
DC Characteristics
TTL Input Levels
V_IL
V_IH
Outputs
Open Circuit Voltage
Differential Output
Balance
Common-Mode Output
Output Current
Short Circuit Current
AC Characteristics
Maximum Data Rate
Output Transition Time
Propagation Delay
t_PHL
t_PLH
Driver Output Skew
2.0
2.4
2.0
1.5
28.0
5
RS-485 RECEIVER
DC Characteristics
TTL Output Levels
V_OL
V_OH
2.4
Tri-State Output Current
Inputs
Common Mode Range
–7.0
Receiver Sensitivity
Input Impedance
120
ELECTRICAL CHARACTERISTICS
TYP. MAX. UNITS
0.8
Volts
Volts
0.4
Volts
Volts
CONDITIONS
I_OUT= -3.2mA
I_OUT= 1.0mA
0.8
Volts
Volts
6.0
5.0
±0.2
3.0
±250
Volts
Volts
Volts
Volts
mA
mA
R_L=54Ω, C_L=50pF
|V_T| - |V_T|
R_L=54Ω
Terminated in –7V to +12V
Mbps
R_L=54Ω
30
ns
Rise/fall time, 10%–90%
See Figures 3 and 5
60
100 ns
60
100 ns
5
15
ns
R_DIFF=54Ω, C_L1=C_L2=100pF
R_DIFF=54Ω, C_L1=C_L2=100pF
see Figure 3 and 5,
t_SKEW = | t_DPLH - t_DPHL |
0.4
Volts
Volts
±1
µA
+12.0 Volts
±0.2 Volts
150
kΩ
0.4V≤V_OUT ≤2.4V; RE = V_CC
–7V ≤ V_CM ≤ +12V
–7V ≤ V_CM ≤ +12V
Date: 6/21/04
SP485R RS-485 Serial Transceiver
2
© Copyright 2004 Sipex Corporation