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參數(shù)資料
| 型號： | SP491 |
| 元件分類： | RS-485 |
| 英文描述： | Full Duplex RS-485 Transceivers |
| 中文描述： | 全雙工RS - 485接口收發(fā)器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 83K |
| 代理商： | SP491 |
6
Date: 05/10/04
SP490/491 Full Duplex RS-485 Transceivers
Copyright 2004 Sipex Corporation
T
MIN
to T
MAX
and V
CC
= 5V
±
5% unless otherwise noted.
PARAMETERS
SP491
RECEIVER
DC Characteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
Three State (high impedance)
Output Current
Input Resistance
Input Current (A, B); V
IN
= 12V
Input Current (A, B); V
IN
= -7V
Short-Circuit Current
SP491
RECEIVER
DC Characteristics
Maximum Data Rate
Receiver Input to Output
MIN.
TYP.
MAX.
UNITS
CONDITIONS
-0.2
+0.2
Volts
mV
Volts
Volts
-7V
≤
V
CM
≤
12V
V
CM
= 0V
I
O
ID
= +200mV
I
O
= +4mA, V
ID
= -200mV
70
3.5
0.4
±
1
μ
A
k
mA
mA
mA
0.4V
≤
V
O
≤
2.4V; REB = 5V
-7V
≤
V
≤
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
12
15
±
1.0
-0.8
85
7
5
60
Mbps
ns
REB = 0V
t
PLH
; R
DIFF
= 54
,
C
L1
= C
L2
t
PHL
; R
DIFF
= 54
,
C
L1
= C
R
= 54
; C
L1
= C
L2
= 100pF;
Figures 3 & 8
C
RL
= 15pF;
Figures 2 and 9;
S
1
closed
C
RL
= 15pF;
Figures 2 and 9;
S
2
closed
C
RL
= 15pF;
Figures 2 and 9;
S
1
closed
C
RL
= 15pF;
Figures 2 and 9;
S
2
closed
90
150
=
100pF;
Figures 3 & 8
Receiver Input to Output
60
90
150
ns
=
100pF;
Figures 3 & 8
Diff. Receiver Skew It
PLH
-t
PHL
I
13
ns
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
POWER REQUIREMENTS
Supply Voltage
Supply Current
SP491 ENVIRONMENTAL
AND MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
Plastic DIP (_S_)
NSOIC (_N)
20
20
20
20
50
50
50
50
ns
ns
ns
ns
+4.75
+5.25
Volts
μ
A
600
REB, D = 0V or V
CC
; DE = V
CC
+3V
0V
RE
5V
R
0V
1.5V
1.5V
t
ZL
t
ZH
f = 1MHz; t
R
< 10ns; t
F
< 10ns
R
1.5V
1.5V
t
LZ
t
HZ
0.5V
0.5V
Output normally LOW
Output normally HIGH
V
IL
V
IH
Figure 9. Receiver Enable and Disable Times
0
+70
+85
+150
°
C
°
C
°
C
-40
-65
ELECTRICAL CHARACTERISTICS
相關PDF資料 |
PDF描述 |
|---|---|
| SP491CN | Full Duplex RS-485 Transceivers |
| SP491CS | Full Duplex RS-485 Transceivers |
| SP491EN | Full Duplex RS-485 Transceivers |
| SP491ES | Full Duplex RS-485 Transceivers |
| SP490E | Enhanced Full Duplex RS-485 Transceivers |
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