SP1486E Datasheet, PDF (5/15 Pages) Sipex Corporation – +5V, 20Mbps PROFIBUS RS485/RS422 Transceivers Advanced Failsafe, 1/8th Unit Load, ±15kV ESD-Protected

TIMING CHARACTERISTICS
Unless otherwise noted Vcc= +5.0±0.5V, ambient temperature Ta from -40 to +85ºC
DRIVER CHARACTERISTICS:
Data Signaling Rate
Driver Propagation Delay (tPHL, tPLH)
Driver Output Rise/Fall Time (tR, tF)
Driver Differential Skew (tPLH – tPHL)
Driver Enable to Output High (tDZH)
Driver Enable to Output Low (tDZL)
Driver Disable from Output High (tDHZ)
Driver Disable from Output Low (tDLZ)
Shutdown to Driver Output Valid (tDZV)
Conditions
Duty Cycle 40 to 60%
RL = 54Ω, CL = 50pF,
RL = 500Ω, CL = 50pF,
Min. Typ. Max. Unit
20
Mbps
12 20 ns
6 10 ns
1 5 ns
50 ns
50 ns
50 ns
50 ns
150 ns
RECEIVER CHARACTERISTICS:
Data Signaling Rate
Receiver Propagation Delay (tPLH, tPHL)
Propagation Delay Skew (tPLH, tPHL)
Receiver Output Rise/Fall Time
Receiver Enable to Output High (tZH)
Receiver Enable to Output Low (tZL)
Receiver Disable from Output High (tHZ)
Receiver Disable from Output Low (tLZ)
Shutdown to Receiver Output Valid (tROV)
Time to Shutdown (Note 2,3)
Conditions
Duty Cycle 40 to 60%
Cl=15pF, Vid=±2V,
Cl=15pF
Cl=15pF, RL=1kΩ
Cl=15pF, RL=1kΩ
Cl=15pF, RL=1kΩ
Cl=15pF, RL=1kΩ
Min. Typ. Max. Unit
20
Mbps
40 ns
1 5 ns
15 ns
50 ns
50 ns
50 ns
50 ns
3500 ns
50 200 600 ns
FUNCTION TABLES
Transmitting
Inputs
Outputs
RE
DE
DI
A
B
X
1
1
1
0
X
1
0
0
1
0
0
X
High-Z
1
0
X
Shutdown
Receiving
Inputs
Output
RE
DE
V_A - V_B
RO
0
X
≥ -40mV
1
0
X
≤-200mV
0
0
X
Open/shorted
1
1
1
X
High-Z
1
0
X
Shutdown
Note: Receiver inputs -200mV < VA - VB < -40mV, should be considered indeterminate
Rev J 3/8/2007
SP1486E PROFIBUS/RS485 Transceivers

© Copyright 2007 Sipex Corporation