Datasheet

ADM3101E
Rev. C | Page 5 of 12
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
06766-002
1C1+
2R
OUT
3T
IN
9R
IN
8T
OUT
7V–
4
V+
5
V
CC
6
GND
12
C1–
11
C2+
10
C2–
PIN 1
INDICATOR
ADM3101E
TOP VIEW
(Not to Scale)
NOTES
1. PADDLE CONNECTED TO GND. THIS CONNECTION IS NOT
REQUIRED TO MEET THE ELECTRICAL PERFORMANCES.
Figure 2. LFCSP Pin Configuration
06766-014
NC = NO CONNECT
1
2
3
4
5
6
7
8
C1+
NC
R
OUT
V+
NC
T
IN
C1–
V
CC
16
15
14
13
12
11
10
9
C2–
NC
R
IN
V–
GND
NC
T
OUT
C2+
TOP VIEW
(Not to Scale)
ADM3101E
Figure 3. QSOP Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic Description
LFCSP QSOP
1, 12 2, 1 C1+, C1−
Positive and Negative Connections for Charge Pump Capacitor. External Capacitor C1 is connected
between these pins; a 0.1 μF capacitor is recommended, but larger capacitors up to 10 μF can be used.
2 4 R
OUT
Receiver Output. This pin outputs CMOS output logic levels.
3 5 T
IN
Transmitter (Driver) Input. This input accepts TTL/CMOS levels.
4 7 V+ Internally Generated Positive Supply (+6 V Nominal).
5 8 V
CC
Power Supply Input, 3.0 V to 5.5 V.
6 9 GND Ground. Must be connected to 0 V.
7 10 V– Internally Generated Negative Supply (−6 V Nominal).
8 12 T
OUT
Transmitter (Driver) Output. This pin outputs RS-232 signal levels (typically ±6 V).
9 13 R
IN
Receiver Input. This input accepts RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is
connected on the input.
10, 11 15, 16 C2−, C2+
Positive and Negative Connections for Charge Pump Capacitor. External Capacitor C2 is connected
between these pins; a 0.1 μF capacitor is recommended, but larger capacitors up to 10 μF can be used.
N/A 3, 6, 11, 14 NC No Connect. These pins should always remain unconnected.