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PDF MAX3314E Data sheet ( Hoja de datos )
| Número de pieza | MAX3314E | |
| Descripción | 15kV ESD-Protected / 460kbps / 1A / RS-232-Compatible Transceiver | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1696; Rev 1; 3/01
±15kV ESD-Protected, 460kbps, 1µA,
RS-232-Compatible Transceiver
General Description
The MAX3314E is a ±5V-powered EIA/TIA-232-compat-
ible interface. It has one transmitter and one receiver in
a flow-through architecture. The transmitter output and
the receiver input are protected to ±15kV using IEC
1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2
Contact Discharge, and ±15kV using the Human Body
Model.
The transmitter has a low-dropout output stage provid-
ing minimum RS-232-compatible ±3.7V output levels
while driving 3kΩ and 1000pF at 460kbps. Both +5V
and -5V must be supplied externally.
The MAX3314E has a SHDN function that reduces sup-
ply current to 1µA. The transmitter is disabled and put
into tristate while the receiver remains active.
The MAX3314E is available in 8-pin µMAX, SOT23, and
SO packages.
________________________Applications
Digital Cameras
PDAs
GPS
POS
Telecommunications
Handy-Terminals
Set-Top Boxes
Typical Operating Circuit
+5V
CBYPASS
0.1µF
1
VCC
MAX3314E
2
SHDN
V- 7
-5V
0.1µF
4 TIN
TOUT 5
3 ROUT
RIN 6
5kΩ
GND
8
Features
o ESD Protection for RS-232 I/O Pins
±15kV—Human Body Model
±8kV—IEC 1000-4-2 Contact Discharge
±15kV—IEC 1000-4-2 Air-Gap Discharge
o 1µA Low-Power Shutdown with Receiver Active
o 30µA Operating Supply Current
o 460kbps Guaranteed Data Rate
o 8-Pin SOT23 Package
o ±3.7V RS-232-Compatible Levels
PART
MAX3314ECKA-T
MAX3314ECUA
MAX3314ECSA
MAX3314EEKA-T
MAX3314EEUA
MAX3314EESA
Ordering Information
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SOT23-8
8 µMAX
8 SO
8 SOT23-8
8 µMAX
8 SO
TOP VIEW
Pin Configuration
VCC 1
SHDN 2
ROUT 3
TIN 4
MAX3314E
8 GND
7 V-
6 RIN
5 TOUT
SOT23/µMAX/SO
CAPACITORS MAY BE POLARIZED OR NONPOLARIZED.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
±15kV ESD-Protected, 460kbps, 1µA,
RS-232-Compatible Transceiver
Table 1. Shutdown Logic Truth Table
SHDN
L
H
TRANSMITTER
OUTPUT
High Z
Active
RECEIVER
OUTPUT
Active
Active
TIN
TOUT
5V/div
0
1.5V/div
0
TIN = GND
SHDN
TOUT
ROUT
5µs/div
Figure 3. Loopback Test Result at 120kbps
TIN = VCC
1µs/div
Figure 1. Transmitter Outputs When Exiting Shutdown or
Powering Up
+5V
0.1µF
VCC
SHDN
MAX3314E
V-
TIN
ROUT
TOUT
RIN
5kΩ
GND
-5V
0.1µF
1000pF
Figure 2. Loopback Test Circuit
TIN
TOUT
ROUT
2µs/div
Figure 4. Loopback Test Result at 250kbps
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Human Body Model
Figure 5 shows the Human Body Model, and Figure 6
shows the current waveform it generates when dis-
charged into low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the test device through a
1.5kΩ resistor.
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX3314E.PDF ] | |
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