SP488 Datasheet, PDF (5/6 Pages) Sipex Corporation – Quad RS-485/RS-422 Line Receivers

AC PARAMETERS
V
CC
=
5V±5%;
typicals
at
25°C;
0°C
≤
T
A
≤
+70°C
unless
otherwise
noted.
PARAMETER
MIN.
PROPAGATION DELAY
Receiver Input to Output
Low to HIGH (tPLH)
High to LOW (tPH_L)
Differential Receiver Skew (t_SKD)
Receiver Rise Time (t_R)
SP488
SP489
Receiver Fall Time (t_F)
SP488
SP489
RECEIVER ENABLE
To Output HIGH
To Output LOW
RECEIVER DISABLE
From Output LOW
From Output HIGH
TYP.
120
120
13
30
30
20
20
70
80
70
70
MAX.
250
250
70
70
40
40
150
200
150
150
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CONDITIONS
C_L = 15pF; Figure 1, 3
10% to 90%
90% to 10%
C_L = 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)
+V_OD
Input A–B
–V_OD
F = 1MHZ: t_r < 10ns: t_f < 10ns
0V
0V
t_PHL
t_PLH
RO ^VOH
V_OL
Figure 3. Receiver Propagation Delays
1.5V
1.5V
3V
EN
0V
F = 1MHZ: t_r < 10ns: t_f < 10ns
1.5V
1.5V
t_ZL
t_LZ
RO ^5V
V_OL
t_ZH
RO ^VOH
0V
Figure 4. Receiver Enable/Disable Timing
1.5V
Output normally low
t_HZ
Output normally high
1.5V
0.5V
0.5V
SP488/489
Quad RS-485/RS-422 Line Receivers
5
© Copyright 2000 Sipex Corporation