ADM213E_15 Datasheet, PDF (7/20 Pages) Analog Devices – RS-232 Line Drivers/Receivers

ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
T3_OUT 1
28 T4_OUT
T1_OUT 2
27 R3_IN
T2_OUT 3
26 R3_OUT
R2_IN 4
25 _SHDN
R2_OUT 5
24 EN
T2_IN
T1_IN
R1_OUT
6 _ADM213E 23 R4_IN1
7 _{TOP VIEW} 22 R4_OUT1
8 ^{(Not to Scale)} 21 T4_IN
R1_IN 9
20 T3_IN
GND 10
19 R5_OUT1
V_CC 11
18 R5_IN1
C1+ 12
17 V–
V+ 13
16 C2–
C1– 14
15 C2+
1_{ACTIVE IN SHUTDOWN.}
Figure 10. ADM213E Pin Configuration
5V INPUT
+
0.1µF
16V
+
0.1µF
16V
12 C1+
14 C1–
+5V TO +10V
VOLTAGE
DOUBLER
V_CC 11
V+ 13
15 C2+ +10V TO –10V
VOLTAGE
16 C2– INVERTER
V– 17
0.1µF
+ _6.3V
+
0.1µF
0.1µF
+16V
T1_IN
7
T2_IN
6
TTL/CMOS
INPUTS¹
T3_IN
20
T4_IN
21
R1_OUT
8
R2_OUT
5
TTL/CMOS
OUTPUTS
R3_OUT
26
R4_OUT3
22
R5_OUT3
19
EN
24
T1
2
T2
3
T3
1
T4
28
R1
9
R2
4
R3
27
R4
23
R5
18
25
GND ADM213E
10
T1_OUT
T2_OUT
T3_OUT
RS-232
OUTPUTS
T4_OUT
R1_IN
R2_IN
R3_IN
RS-232
INPUTS²
R4_IN3
R5_IN3
SHDN
1 _{INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.}
2 _{INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.}
3 _{ACTIVE IN SHUTDOWN.}
Figure 11. ADM213E Typical Operating Circuit
Table 6. Pin Function Descriptions
Mnemonic Function
VCC
Power Supply Input (5 V ± 10%).
V+
Internally Generated Positive Supply (+9 V nominal).
V–
Internally Generated Negative Supply (−9 V nominal).
GND
Ground Pin. Must be connected to 0 V.
C1+, C1–
External Capacitor 1 is connected between these pins. A 0.1 μF capacitor is recommended, but larger capacitors (up to
47 μF) can be used.
C2+, C2–
External Capacitor 2 is connected between these pins. A 0.1 μF capacitor is recommended, but larger capacitors (up to
47 μF) can be used.
TIN
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to VCC is connected on
each input.
TOUT
Transmitter (Driver) Outputs. These are RS-232 signal levels (typically ±9 V).
RIN
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected on
each input.
ROUT
Receiver Outputs. These are TTL/CMOS output logic levels.
EN/EN
Receiver Enable (active high on ADM213E, active low on ADM211E). This input is used to enable/disable the receiver
outputs. With EN = low for the ADM211E (EN = high for the ADM213E), the receiver outputs are enabled. With EN = high
for the ADM211E (EN = low for the ADM213E), the receiver outputs are placed in a high impedance state. (See Table 3
and Table 4.)
SHDN/SHDN
Shutdown Control (active low on ADM213E, active high on ADM211E). When the ADM211E is in shutdown, the charge
pump is disabled, the transmitter outputs are turned off, and all receiver outputs are placed in a high impedance state.
When the ADM213E is in shutdown, the charge pump is disabled, the transmitter outputs are turned off, and Receiver R1 to
Receiver R3 are placed in a high impedance state; Receiver R4 and Receiver R5 on the ADM213E continue to operate
normally during shutdown. (See Table 3 and Table 4.) Power consumption for all parts reduces to 5 μW in shutdown.
Rev. E | Page 7 of 20