SP488ACP Просмотр технического описания (PDF) - Signal Processing Technologies
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SP488ACP Datasheet PDF : 7 Pages
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AC PARAMETERS
V
CC
=
5V±5%;
typicals
at
25°C;
0°C
≤
T
A
≤
+70°C
unless
otherwise
noted.
PARAMETER
MIN. TYP. MAX.
PROPAGATION DELAY
Receiver Input to Output
Low to HIGH (tPLH)
High to LOW (tPHL)
Differential Receiver Skew (tSKD)
Receiver Rise Time (tR)
SP488A
SP489A
Receiver Fall Time (tF)
SP488A
SP489A
RECEIVER ENABLE
To Output HIGH
TBD
TBD
TBD
TBD
TBD
TBD
TBD
TBD
To Output LOW
TBD
RECEIVER DISABLE
From Output LOW
From Output HIGH
TBD
TBD
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CONDITIONS
CL = 15pF; Figure 1, 3
10% to 90%
90% to 10%
CL = 15pF; Figures 2 and 4
(S2 closed)
CL = 15pF; Figures 2 and 4
(S1 closed)
CL = 15pF; Figures 2 and 4
(S1 closed)
CL = 15pF; Figures 2 and 4
(S2 closed)
+VOD
Input A–B
–VOD
F = 1MHZ: tr < 10ns: tf < 10ns
0V
0V
tPHL
tPLH
RO VOH
VOL
Figure 1. Receiver Propagation Delays
1.5V
1.5V
3V
EN
0V
F = 1MHZ: tr < 10ns: tf < 10ns
1.5V
1.5V
tZL
tLZ
RO 5V
VOL
tZH
RO VOH
0V
Figure 2. Receiver Enable/Disable Timing
1.5V
Output normally low
tHZ
Output normally high
1.5V
0.5V
0.5V
SP488A/489ADS/07
SP488A/489A High Speed Quad RS-485/RS-422 Line Receivers
3
© Copyright 2000 Sipex Corporation
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