TRSF3238E Datasheet, PDF (12/20 Pages) Texas Instruments – 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD (HBM) PROTECTION

TRSF3238E
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
SLLS826 – AUGUST 2007
APPLICATION INFORMATION
www.ti.com
+
C_BYPASS = 0.1 µF _−
1
+
2
C2 _−
3
4
−
C4
+
5
DOUT1
6
DOUT2
7
DOUT3
RS-232 Port
RIN1 ⁸
RIN2 ⁹
C2+
GND
C2−
V−
10
DOUT4
RIN3 ¹¹
12
DOUT5
5 kΩ
5 kΩ
5 kΩ
28
C1+
V+
27
+
− ^{C3† +}
C1
V_CC
26
−
C1−
25
24
DIN1
23
DIN2
22
DIN3
21
ROUT1
20 _ROUT2
Logic I/Os
19
DIN4
18
ROUT3
17
DIN5
16
ROUT1B
13
FORCEON
14
FORCEOFF
Auto-
Powerdown
Plus
15
INVALID
† _{C3 can be connected to VCC or GND.}
NOTES: A. Resistor values shown are nominal.
B. Nonpolarized ceramic capacitors are acceptable. If polarized tantalum
or electrolytic capacitors are used, they should be connected as
shown.
V_CC vs CAPACITOR VALUES
V_CC
C1
C2, C3, and C4
3.3 V ± 0.15 V
3.3 V ± 0.3 V
5 V ± 0.5 V
3 V to 5.5 V
0.1 µF
0.22 µF
0.047 µF
0.22 µF
0.1 µF
0.22 µF
0.33 µF
1 µF
Figure 6. Typical Operating Circuit and Capacitor Values
12
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