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SP207ECT データシート(PDF) 8 Page - Sipex Corporation

部品番号 SP207ECT
部品情報  5V High Performance RS232 Transceivers
PDF  16 Pages
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メーカー  SIPEX [Sipex Corporation]
ホームページ  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP207ECT データシート(HTML) 8 Page - Sipex Corporation

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SP207EDS/09
SP207E Series High Performance RS232 Transceivers
© Copyright 2000 Sipex Corporation
8
Figure 6. Wake–Up Timing
+5V
0V
ENABLE
DISABLE
SD
ROUT
DATA VALID
+5V
0V
ROUT
+5V
0V
ROUT
tWAIT
t0 (POWERUP)
ENABLE
DISABLE
SD
POWER UP WITH SD ACTIVE (Charge pump in shutdown mode)
POWER UP WITH SD DISABLED (Charge pump in active mode)
t0 (POWERUP)
tENABLE
DATA VALID
SD
DATA VALID
DATA VALID
DATA VALID
EXERCISING WAKE–UP FEATURE
t0 (POWERUP)
tENABLE
tENABLE
tENABLE
tWAIT
DISABLE
DISABLE
ENABLE
tWAIT = 2ms typical, 3ms maximum
tENABLE = 1ms typical, 2ms maximum
VCC = +5V ±10%; TA = 25°C
SP213E Only
Power
Receiver
SD
EN
SD
EN
Up/Down
Outputs
0
0
1
1
Up
Enable
0
1
1
0
Up
Tri–state
1
0
0
1
Down
Enable
1
1
0
0
Down
Tri–state
Table 2. Wake–Up Truth Table
ENABLE
The SP211E and SP213E all feature an enable
input, which allows the receiver outputs to be
either tri–stated or enabled. This can be especially
useful when the receiver is tied directly to a
microprocessor data bus. For the SP211E, enable
is active low; that is, 0V applied to the ENABLE
pin will enable the receiver outputs. For the
SP213E, enable is active high; that is, +5V
applied to the ENABLE pin will enable the
receiver outputs.



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