參數資料
型號： SP3494EP
英文描述： +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers
中文描述： 3.3V低功耗轉換率受限的RS-485/RS-422收發(fā)器
文件頁數： 3/11頁
文件大?。?/td> 131K
代理商： SP3494EP
3
10/16/02
SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers
Copyright 2002 Sipex Corporation
SPECIFICATIONS
(continued)
T
AMB
= T
MIN
to T
MAX
and V
CC
= 3.3V
±
5% unless otherwise noted.
PARAMETERS
SP3493 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output, t
PLH
MIN.
TYP.
MAX.
UNITS
CONDITIONS
250
35
kbps
ns
70
120
Figures 6 and 11
Receiver Input to Output, t
PHL
35
70
120
ns
Figures 6 and 11
Differential Receiver Skew
10
ns
Figures 6 and 11
SP3493 POWER REQUIREMENTS
Supply Current
SP3494 DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
1000
2000
μ
A
D = 0 or V
CC
GND
2
V
CC
V
CC
Volts
Volts
Unloaded; R =
∞
; Figure 1
with load; R = 50
; (RS-422); Figure 1
Differential Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
Driver Short-Circuit Current
V
OUT
= HIGH
V
OUT
= LOW
SP3494 DRIVER
AC Characteristics
Maximum Data Rate
1.5
V
CC
Volts
with load; R = 27
; (RS-485); Figure 1
0.2
Volts
R = 27
or R = 50
; Figure 1
3
Volts
Volts
Volts
μ
A
R = 27
or R = 50
; Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
2.0
0.8
+10
+250
+250
mA
mA
-7V < V
O
< +12V
-7V < V
O
< +12V
2.5
Mbps
RE = V
CC
, DE = V
CC
Driver Input to Output, t
PLH
20
45
75
ns
Figures 2 and 8
Driver Input to Output, t
PHL
20
45
75
ns
Figures 2 and 8
Differential Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
SP3494
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
10
30
52
60
40
60
ns
ns
ns
ns
ns
ns
t
- t
, Figures 2 and 9
From 10% to 90%,
Figures 3 and
9
Figures 4 and 10
Figures 5 and 10
Figures 5 and 10
Figures 4 and 10
70
120
120
120
120
-0.2
+0.2
Volts
mV
Volts
Volts
-7V < V
CM
< +12V
V
CM
= 0V
V
ID
= +200mV, -1.5mA
V
ID
= -200mV, 2.5mA
20
V
CC
-0.4
0.4
+1
μ
A
k
mA
mA
mA
0V < V
O
< V
; RE = V
CC
-7V < V
< +12V
DE = 0V, V
CC
= 0V or 3.6V, V
IN
= 12V
DE = 0V, V
= 0V or 3.6V, V
IN
= -7V
0V < V
CM
< V
CC
12
15
1.0
-0.8
60
7
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參數描述
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