ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E
PIN FUNCTION DESCRIPTIONS
Mnemonic
V
CC
V+
V–
GND
C1+, C1–
C2+, C2–
C3+, C3–
T
IN
T
OUT
R
IN
R
OUT
EN
SD
Function
Power Supply Input 2.7 V to 3.6 V.
Internally Generated Positive Supply, 7.25 V (6.5 V nominal for ADM3310E, ADM3315E). Capacitor C4 is
connected between V
CC
and V+.
Internally Generated Positive Supply, –7.25 V (–6.5 V nominal for ADM3310E, ADM3315E). Capacitor C5 is
connected between GND and V–.
Ground Pin. Must be connected to 0 V.
External Capacitor 1 is connected between these pins. A 0.1
mF
capacitor is recommended, but larger capacitors
up to 1
mF
may be used.
External Capacitor 2 is connected between these pins. A 0.1
mF
capacitor is recommended, but larger capacitors
up to 1
mF
may be used.
External Capacitor 3 is connected between these pins. A 0.1
mF
capacitor is recommended, but larger capacitors
up to 1
mF
may be used.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kW pull-up resistor to
V
CC
is connected on each input.
Transmitter (Driver) Outputs. Typically
±
5.5 V (± 6.4 V for ADM3311E and ADM3312E)
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kW pull-down resistor (22 kW for ADM3315E)
to GND is connected on each of these inputs.
Receiver Outputs. These are TTL/CMOS levels.
Receiver Enable. A high level three-states all the receiver outputs.
Shutdown Control. A high level disables the charge pump and reduces the quiescent current to less than 1
mA.
All transmitters and most receivers are disabled. One receiver remains active in shutdown (two receivers active
in shutdown for the ADM3310E).
• ADM3307E R
OUT
3 active in shutdown
• ADM3310E R
OUT
4 and R
OUT
5 active in shutdown
• ADM3311E R
OUT
5 active in shutdown
• ADM3312E R
OUT
3 active in shutdown
• ADM3315E R
OUT
3 active in shutdown
Table I. ADM3307E Truth Table
Table II. ADM3310E Truth Table
SD
EN
0
0
1
1
0
1
0
1
Status
Normal
Operation
Normal
Operation
Shutdown
Shutdown
T
OUT
1–5
Enabled
Enabled
Disabled
Disabled
R
OUT
1–2
Enabled
Disabled
Disabled
Disabled
R
OUT
3
Enabled
Disabled
Enabled
Disabled
SD
EN
0
0
1
1
0
1
0
1
Status
Normal
Operation
Receivers
Disabled
Shutdown
Shutdown
T
OUT
1–3
Enabled
Enabled
Disabled
Disabled
R
OUT
1–3
Enabled
Disabled
Disabled
Disabled
R
OUT
4–5
Enabled
Disabled
Enabled
Disabled
Table III. ADM3311 Truth Table
Table IV. ADM3312E/ADM3315E Truth Table
SD
EN
0
0
1
1
0
1
0
1
Status
Normal
Operation
Receivers
Disabled
Shutdown
Shutdown
T
OUT
1–3
Enabled
Enabled
Disabled
Disabled
R
OUT
1–4
Enabled
Disabled
Disabled
Disabled
R
OUT
5
Enabled
Disabled
Enabled
Disabled
SD
EN
0
0
1
1
0
1
0
1
Status
Normal
Operation
Normal
Operation
Shutdown
Shutdown
T
OUT
1–3
Enabled
Enabled
Disabled
Disabled
R
OUT
1–2
Enabled
Disabled
Disabled
Disabled
R
OUT
3
Enabled
Disabled
Enabled
Disabled
REV. G
–7–
AD [ ANALOG DEVICES ]
