SP490_05 Datasheet, PDF (6/12 Pages) Sipex Corporation – Full Duplex RS-485 Transceivers

T_MIN to T_MAX and V_CC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
SP491 RECEIVER
DC Characteristics
Differential Input Threshold -0.2
Input Hysteresis
Output Voltage High
3.5
Output Voltage Low
Three State (high impedance)
Output Current
Input Resistance
12
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short-Circuit Current
7
SP491 RECEIVER
DC Characteristics
Maximum Data Rate
5
Receiver Input to Output
60
Receiver Input to Output
60
Diff. Receiver Skew It_PLH-t_PHLI
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
POWER REQUIREMENTS
Supply Voltage
Supply Current
+4.75
SP491 ENVIRONMENTAL
AND MECHANICAL
Operating Temperature
Commercial (_C_)
0
Industrial (_E_)
-40
Storage Temperature
-65
Package
Plastic DIP (_S_)
NSOIC (_N)
TYP.
70
15
90
90
13
20
20
20
20
600
ELECTRICAL CHARACTERISTICS
MAX. UNITS CONDITIONS
+0.2 Volts
mV
Volts
0.4 Volts
±1 µA
kΩ
±1.0 mA
-0.8 mA
85 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; REB = 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_O ≤ V_CC
Mbps
150 ns
150 ns
ns
50 ns
50 ns
50 ns
50 ns
+5.25 Volts
µA
REB = 0V
t_PLH; R_DIFF = 54Ω,
C_L1 = C_L2 = 100pF; Figures 3 & 8
tC_PLH1L;=RC_DLIF2F==10504pΩ_{F,; Figures 3 & 8}
R_DIFF = 54Ω; C_L1 = C_L2 = 100pF;
Figures 3 & 8
C_RL = 15pF; Figures 2 and 9; S₁ closed
C_RL = 15pF; Figures 2 and 9; S₂ closed
C_RL = 15pF; Figures 2 and 9; S₁ closed
C_RL = 15pF; Figures 2 and 9; S₂ closed
REB, D = 0V or V_CC; DE = V_CC
+70 °C
+85 °C
+150 °C
+3V
RE
0V
5V
R
V_IL
V_IH
R
0V
1.5V _{f = 1MHz; tR < 10ns; tF < 10ns}
t_ZL
1.5V _{Output normally LOW}
1.5V ^{Output normally HIGH}
t_ZH
Figure 9. Receiver Enable and Disable Times
1.5V
t_LZ
0.5V
0.5V
t_HZ
Date: 02/24/05
SP490/491 Full Duplex RS-485 Transceivers
6
© Copyright 2005 Sipex Corporation