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SP230A Datasheet(PDF) 9 Page - Sipex Corporation

Part No. SP230A
Description  5V Powered Multi-Channel RS-232 Drivers/Receivers
Download  17 Pages
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Maker  SIPEX [Sipex Corporation]
Homepage  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP230A Datasheet(HTML) 9 Page - Sipex Corporation

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9
Date: 8/3/04
+ 5V Powered Multi-Channel RS-232 Drivers/Receivers
© Copyright 2004 Sipex Corporation
Figure 4. Mouse Application Drive Capability
10
9
8
7
6
5
4
3
2
1
0
02468
10
12
18
20
IOL/IOH (mA)
16
14
22
VOL vs IOL
VOH vs IOH
Figure 5. Parallel Drivers
T IN
T OUT
Wake-Up Feature
The SP235B, SP236B, SP240B and SP241B
have a wake-up feature that keeps all receivers
in an enabled state when the device is in the
shutdown mode. Table 2 defines the truth table
for the wake-up function. Timing for the wake-up
function is shown in Figure 6.
If the SP235B, SP236B, SP240B and SP241B
are powered up in the shutdown state (SD driven
high during V
CC power up), the part must remain
in a powered on state for a minimum of 3ms
before the wake-up function can be used. After
the 3ms wait time, there is a 2ms delay time
before data is valid for both enable and disable
+5V
0V
+5V
0V
ROUT
SD
POWER-UP WITH SD HIGH (charge pump section in shutdown state)
+5V
0V
+5V
0V
ROUT
SD
POWER-UP WITH SD LOW (charge pump section in active mode)
tWAIT
tENABLE
t0 (power up)
t0 (power up)
+5V
0V
+5V
0V
ROUT
SD
EXERCISING WAKE–UP FEATURE
t0 (power up)
DATA
VALID
tWAIT
DATA
VALID
DATA
VALID
DATA
VALID
DATA
VALID
tENABLE
tENABLE
tENABLE
SPECIFICATIONS:
(VCC =+5V±10%, TA=25°C)
PARAMETER
MIN.
TYP.
MAX.
tWAIT
2ms
3ms
tENABLE
1ms
2ms
Figure 6. Wake–Up and Shutdown Timing


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