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MAX3387E データシート(Datasheet) 1 Page - Maxim Integrated Products

部品番号. MAX3387E
部品情報  3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones
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メーカー  MAXIM [Maxim Integrated Products]
ホームページ  http://www.maxim-ic.com
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 1 page
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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX3387E 3V powered EIA/TIA-232 and V.28/V.24
is a communications interface with low power require-
ments, high data-rate capabilities, and enhanced elec-
trostatic discharge (ESD) protection. The MAX3387E
has three receivers and three transmitters. All RS-232
inputs and outputs are protected to ±15kV using the
IEC 1000-4-2 Air-Gap Discharge method, ±8kV using
the IEC 1000-4-2 Contact Discharge method, and
±15kV using the Human Body Model.
A proprietary low-dropout transmitter output stage
enables true RS-232 performance from a +3.0V to
+5.5V supply with a dual charge pump. The charge
pump requires only four small 0.1µF capacitors for
operation from a +3.3V supply. The MAX3387E is capa-
ble of running at data rates up to 250kbps while main-
taining RS-232 compliant output levels.
The MAX3387E has a unique VL pin that allows interop-
eration in mixed-logic voltage systems. Both input and
output logic levels are pin programmable through the
VL pin. The MAX3387E is available in a space-saving
TSSOP package.
Applications
Subnotebook/Palmtop Computers
PDAs and PDA Cradles
Cell Phone Data Cables
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Features
o VL Pin for Compatibility with Mixed-Voltage
Systems
o ±15kV ESD Protection on Rx Inputs and Tx Outputs
o Low 300µA Supply Current
o Guaranteed 250kbps Data Rate
o 1µA AutoShutdown Plus™ with Receivers Active
o Meets EIA/TIA-232 Specifications Down to 3.0V
3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
________________________________________________________________
Maxim Integrated Products
1
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
FORCEOFF
VCC
GND
T1OUT
C2+
C1-
V+
C1+
TOP VIEW
T2OUT
T3OUT
R1IN
R2IN
T2IN
T1IN
V-
C2-
16
15
14
13
9
10
11
12
R3IN
VL
R1OUT
R2OUT
R3OUT
FORCEON
T3IN
INVALID
TSSOP
MAX3387E
C1
0.1
µF
C2
0.1
µF
MAX3387E
R2OUT
13
R1OUT
14
R2IN 17
GND
22
RS-232
OUTPUTS
TTL/CMOS
INPUTS
T2IN
8
T1IN
7
C2-
5
C2+
4
C1-
3
C1+
1
R1IN 18
T2OUT 20
T1OUT 21
V-
6
V+
2
VCC
VL
C4
0.1
µF
23
15
CBYPASS
+3.3V
T3IN
10
T3OUT 19
RS-232
INPUTS
TTL/CMOS
OUTPUTS
C3
0.1
µF
5k
5k
VL
VL
R3OUT
12
R3IN 16
5k
VL
FORCEOFF
24
INVALID
9
11
FORCEON
Typical Operating Circuit
19-1561; Rev 1; 10/99
Pin Configuration
Ordering Information
AutoShutdown Plus is a trademark of Maxim Integrated Products.
PART
MAX3387ECUG
MAX3387EEUG
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
24 TSSOP
24 TSSOP




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