Datasheet

15 kV ESD Protected, 2.7 V to 3.6 V Serial
Port Transceivers with Green Idle
Data Sheet
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E
1
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FEATURES
Green Idle power-saving mode
Single 2.7 V to 3.6 V power supply
Operates with 3 V logic
0.1 µF to 1 µF charge pump capacitors
Low EMI
Low power shutdown: 20 nA
Full RS-232 compliance
460 kb/s data rate
One receiver active in shutdown
(ADM3307E/ADM3311E/ADM3312E/ADM3315E)
Two receivers active in shutdown (ADM3310E)
ESD >15 kV IEC 1000-4-2 on RS-232 I/Os
ESD >15 kV IEC 1000-4-2 on CMOS and RS-232 I/Os
(ADM3307E)
Qualified for automotive applications
APPLICATIONS
Mobile phone handsets/data cables
Laptop and notebook computers
Printers
Peripherals
Modems
PDAs/Hand-Held Devices/Palmtop Computers
FUNCTIONAL BLOCK DIAGRAMS
V
CC
R1
OUT
T5
I
N
T4
IN
T1
IN
T1
OUT
T3
IN
T2
IN
ADM3307E
SD
V+
C1+
C1–
C2–
V–
C3+
V
CC
GND
C2
C3–
C2+
C1
0.1µF
0.1µF
R2
OUT
R3
OUT
T2
OUT
T3
OU
T
T4
OUT
T
5
OUT
R1
IN
R2
IN
R3
IN
0.1µF
CERAMIC
10µF
T
ANTALUM
+
C4
0.1µF
SHUTDOWN
INPUT
ENABLE
INPUT
CMOS
INPU
TS
1
CMOS
OUTPUTS
EN
VOLTAGE
TRIPLER/
INVERTER
+3V TO ±9V
C3
0.1µF
C5
0.1µF
EIA
/TI
A-232
O
UTP
UTS
EI
A/T
IA-
232
I
NPU
TS
2
T1
T
3
T2
T5
T
4
R3
R1
R2
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
02915-001
Figure 1. ADM3307E Functional Block Diagram
V
CC
T1
IN
T
1
O
UT
T3
IN
T2
IN
ADM3310
E/
ADM3311E
C1+
V+
C3–
C2–
V
CC
C1–
GND
C2+
SD
V–
C3+
C
1
0.1µF
T
2
OUT
T3
OUT
0.1µF
CE
RAMIC
10µF
TANTA
LUM
+
C4
0.1µF
C2
0.1
µF
ENABLE
IN
PUT
SHU
TDOWN
INPUT
C
MOS
I
NPUTS
1
CMOS
O
UTPUTS
EN
VOLTAGE
TRIPLER/
IN
VERTER
+3V TO ±9V
C3
0.1µF
C5
0.
1µF
E
IA/
TIA-
232
OUT
PUTS
EIA/TIA-232
INPUTS
2
R1
O
UT
R1
IN
R1
R3
OUT
R3
I
N
R3
R2
OUT
R2
IN
R2
R5
OUT
R5
IN
R5
R4
OUT
R4
IN
R4
T3
T1
T
2
1
INTERNAL
400kΩ
PULL-UP RES
ISTOR ON EACH CMOS INPUT
.
2
INTERNAL 5kΩ
PULL-D
OWN RESIS
TOR ON EACH
RS-
232 INPUT.
02915-002
V
CC
T1
IN
T
1
OU
T
T3
IN
T2
IN
ADM3312E/
ADM3315E
C1+
V+
C3–
C2–
V
CC
C1–
GND
C2+
SD
V–
C3+
C1
0.1
µF
T2
OUT
T3
OU
T
0.1µ
F
CE
RAMI
C
10µF
TANTALUM
+
C4
0.1µF
C
2
0.1µF
ENAB
LE
IN
PUT
SHUTD
OWN
INPUT
CMOS
I
NPUTS
1
EN
VO
LTAG
E
TR
IPLE
R/
I
NVER
TER
+3
V TO
±9V
C
3
0
.1µF
C
5
0.
1µF
CMOS
OU
TPUTS
EIA/
TIA-232
OUTPUT
S
EI
A/TIA-
232
INPUT
S
2
R1
OUT
R1
I
N
R3
OUT
R3
IN
R2
OUT
R2
IN
R
1
R3
R2
T3
T1
T2
1
IN
TERNAL 400kΩ
PULL-UP RESISTOR
ON EACH CMOS INPUT
.
2
INTERNA
L 5kΩ (22kΩ FOR ADM
3315E) PULL-DOWN R
ESISTOR O
N
EACH RS-232 INP
UT.
02915-003
Figure 2. ADM3310E/ADM3311E Functional Block Diagram Figure 3. ADM3312E/ADM3315E Functional Block Diagram
1
Protected by U.S. Patent No. 5,606,491.
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