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SP490 数据表(PDF) 6 Page - Sipex Corporation

部件名 SP490
功能描述  Full Duplex RS-485 Transceivers
PDF  10 Pages
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制造商  SIPEX [Sipex Corporation]
网页  http://www.sipex.com
标志 SIPEX - Sipex Corporation

SP490 数据表(HTML) 6 Page - Sipex Corporation

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Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
© Copyright 2004 Sipex Corporation
T
MIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
SP491 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V ≤ V
CM ≤ 12V
Input Hysteresis
70
mV
V
CM = 0V
Output Voltage High
3.5
Volts
I
O = -4mA, VID = +200mV
Output Voltage Low
0.4
Volts
I
O = +4mA, VID = -200mV
Three State (high impedance)
Output Current
±1
µA
0.4V ≤ V
O ≤ 2.4V; REB = 5V
Input Resistance
12
15
kΩ
-7V ≤ V
CM ≤ 12V
Input Current (A, B); V
IN = 12V
±1.0
mA
DE = 0V, V
CC = 0V or 5.25V, VIN = 12V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or 5.25V, VIN = -7V
Short-Circuit Current
7
85
mA
0V ≤ V
O ≤ VCC
SP491 RECEIVER
DC Characteristics
Maximum Data Rate
5
Mbps
REB = 0V
Receiver Input to Output
60
90
150
ns
t
PLH; RDIFF = 54Ω,
C
L1 = CL2 = 100pF; Figures 3 & 8
Receiver Input to Output
60
90
150
ns
t
PHL; RDIFF = 54Ω,
C
L1 = CL2
= 100pF; Figures 3 & 8
Diff. Receiver Skew It
PLH-tPHLI13
ns
R
DIFF = 54Ω; CL1 = CL2 = 100pF;
Figures 3 & 8
Receiver Enable to Output Low
20
50
ns
C
RL = 15pF; Figures 2 and 9; S1 closed
Receiver Enable to Output High
20
50
ns
C
RL = 15pF; Figures 2 and 9; S2 closed
Receiver Disable from Low
20
50
ns
C
RL = 15pF; Figures 2 and 9; S1 closed
Receiver Disable from High
20
50
ns
C
RL = 15pF; Figures 2 and 9; S2 closed
POWER REQUIREMENTS
Supply Voltage
+4.75
+5.25
Volts
Supply Current
600
µA
REB, D = 0V or V
CC; DE = VCC
SP491 ENVIRONMENTAL
+3V
0V
RE
5V
R
0V
1.5V
1.5V
tZL
tZH
f = 1MHz; tR < 10ns; tF < 10ns
R
1.5V
1.5V
tLZ
tHZ
0.5V
0.5V
Output normally LOW
Output normally HIGH
VIL
VIH
Figure 9. Receiver Enable and Disable Times
AND MECHANICAL
Operating Temperature
Commercial (_C_)
0
+70
°C
Industrial (_E_)
-40
+85
°C
Storage Temperature
-65
+150
°C
Package
Plastic DIP (_S_)
NSOIC (_N)
ELECTRICAL CHARACTERISTICS



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