ADM232A_15 Datasheet, PDF (5/11 Pages) Analog Devices – CMOS RS-232 Drivers/Receivers

C1+ 1
V+ 2
16 V_CC
15 GND
C1– 3
14 T1_OUT
C2+ 4 ADM232A 13 R1_IN
TOP VIEW
C2– 5 _{(Not to Scale)} 12 R1_OUT
V– 6
11 T1_IN
T2_OUT 7
10 T2_IN
R2_IN 8
9 R2OUT
Figure 9. ADM232A DIP/SOIC Pin Configuration
ADM222/ADM232A/ADM242
EN ¹
18 _SHDN
C1+ 2
V+ 3
17 V_CC
16 GND
C1– 4 _ADM242 15 T1_OUT
C2+ 5 TOP VIEW 14 R1_IN
(Not to Scale)
C2– 6
13 R1_OUT
V– 7
12 T1_IN
T2_OUT 8
11 T2_IN
R2_IN 9
10 R2OUT
Figure 11. ADM242 DIP/SOIC Pin Configuration
5V INPUT
C1
0.1␮F
C2
0.1␮F
C5
0.1␮F
6.3V
16
1 _C1+
V_CC
3
+5V TO +10V
VOLTAGE DOUBLER
V+
2
C1–
4
C2+ _{+5V TO –10V}
VOLTAGE INVERTER ^V–
6
5 _C2–
C3
0.1␮F
C4
0.1␮F
11
T1_IN
TTL/CMOS
INPUTS*
10
T2_IN
TTL/CMOS
OUTPUTS
12
R1_OUT
9
R2_OUT
T1
T2
R1
R2
14
T1_OUT
RS-232
7
OUTPUTS
T2_OUT
13
R1_IN
RS-232
8
INPUTS**
R2_IN
ADM232A
GND
15 _{* INTERNAL 400k⍀ PULL-UP RESISTOR}
ON EACH TTL/CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
Figure 10. ADM232A Typical Operating Circuit
5V INPUT
C1
0.1␮F
C2
0.1␮F
C5
0.1␮F
6.3V
17
2 _C1+
V_CC
4
+5V TO +10V
VOLTAGE DOUBLER
V+
3
C1–
5
C2+ _{+5V TO –10V}
VOLTAGE INVERTER ^V–
7
6 _C2–
C3
0.1␮F
C4
0.1␮F
12
T1_IN
TTL/CMOS
INPUTS*
11
T2_IN
13
R1_OUT
TTL/CMOS
OUTPUTS
10
R2_OUT
T1
T2
R1
R2
15
T1_OUT
RS-232
8
OUTPUTS
T2_OUT
14
R1_IN
RS-232
9
INPUTS**
R2_IN
EN ¹
ADM242
GND
18 _SHDN
16 _{* INTERNAL 400k⍀ PULL-UP RESISTOR}
ON EACH TTL/CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
Figure 12. ADM242 Typical Operating Circuit
REV. B
–5–