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PDF MAX3362 Data sheet ( Hoja de datos )
| Número de pieza | MAX3362 | |
| Descripción | 3.3V / High-Speed / RS-485/RS-422 Transceiver in SOT Package | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX3362 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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19-2218; Rev 1; 5/02
3.3V, High-Speed, RS-485/RS-422 Transceiver in
SOT Package
General Description
The MAX3362 low-power, high-speed transceiver for
RS-485/RS-422 communication operates from a single
+3.3V power supply. The device contains one differen-
tial transceiver consisting of a line driver and receiver.
The transceiver operates at data rates up to 20Mbps,
with an output skew of less than 6ns. Driver and receiv-
er propagation delays are guaranteed below 50ns. This
fast switching and low skew make the MAX3362 ideal
for multidrop clock/data distribution applications.
The output level is guaranteed at +1.5V with a standard
54Ω load, compliant with RS-485 specifications. The
transceiver draws 1.7mA supply current when
unloaded or fully loaded with the drivers disabled.
Additionally, the MAX3362 has a low-power shutdown
mode, reducing the supply current to 1µA.
The MAX3362 has a 1/8-unit-load receiver input imped-
ance, allowing up to 256 transceivers on the bus. The
MAX3362 is designed for half-duplex communication.
The device has a hot-swap feature that eliminates false
transitions on the data cable during circuit initialization.
The drivers are short-circuit current limited, and a ther-
mal shutdown circuit protects against excessive power
dissipation.
The MAX3362 is available in an 8-pin SOT package
and specified over industrial and automotive tempera-
ture ranges.
Applications
Clock/Data Distribution
Telecom Equipment
Security Equipment
Point-of-Sale Equipment
Industrial Controls
Pin Configuration and Functional Diagram appear at end of
data sheet.
DI
D
DE
RO R
RE
MAX3362
120Ω
B
A BA
R
D
Features
o Space-Saving 8-Pin SOT Package
o Guaranteed 20Mbps Data Rate
o Operates from a Single +3.3V Supply
o 6ns (max) Transmitter and Receiver Skew
o Hot-Swap Feature
o Interoperable with +5V Logic
o Allows up to 256 Transceivers on the Bus
o 1µA Low-Power Shutdown Mode
o 1.7mA Operating Supply Current
o -7V to +12V Common-Mode Range
o Current Limiting and Thermal Shutdown
o Half-Duplex Operation
o Automotive Temperature Range Variants
Ordering Information
PART
MAX3362EKA
MAX3362AKA
TEMP RANGE
-40°C to +85°C
-40°C to +125°C
PIN-
PACKAGE
TOP MARK
8 SOT23
AAJL
8 SOT23
AALL
Typical Operating Circuit
120Ω
B
DE
D
BA
A DI
R RO
RE
R
D
DI DE RO RE
DI DE RO RE
________________________________________________________________ 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  
3.3V, High-Speed, RS-485/RS-422 Transceiver in
SOT Package
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
OUTPUT CURRENT vs. RECEIVER OUTPUT
LOW VOLTAGE
40
35
30
25
20
15
10
5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
RECEIVER OUTPUT LOW VOLTAGE (V)
RECEIVER OUTPUT LOW VOLTAGE
vs. TEMPERATURE
0.05
0.04
0.03
0.02
0.01
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
DRIVER OUTPUT CURRENT
vs. DRIVER OUTPUT LOW VOLTAGE
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 1 2 3 4 5 6 7 8 9 10 11 12
DRIVER OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT vs. RECEIVER OUTPUT
HIGH VOLTAGE
0
-5
-10
-15
-20
-25
-30
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
RECEIVER OUTPUT HIGH VOLTAGE (V)
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
75
60
45
30
15
0
2.2
2.4 2.6 2.8 3.0 3.2
DIFFERENTIAL OUTPUT VOLTAGE (V)
3.4
DRIVER OUTPUT CURRENT
vs. DRIVER OUTPUT HIGH VOLTAGE
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5
DRIVER OUTPUT HIGH VOLTAGE (V)
RECEIVER OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
3.26
3.25
3.24
3.23
3.22
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
3.0
2.5
2.0
1.5
1.0
0.5
RL = 54Ω
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
1.76
1.75
1.74
1.73
1.72
1.71
1.70
1.69
1.68
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
_______________________________________________________________________________________ 5
5 Page 
3.3V, High-Speed, RS-485/RS-422 Transceiver in
SOT Package
VCC
TIMER
10µs
TIMER
8kΩ
DE
300µA
30µA
M1 M2
Figure 8. Simplified Structure of the Driver Enable Input (DE)
DE
(HOT SWAP)
3.3V
VCC
Y
1kΩ
TIN
VCC OR GND
Z
0.1kΩ
1kΩ
50pF
Figure 9. Differential Power-Up Glitch (Hot Swap)
3.3V
VCC 0
A 10mV/div
AC-COUPLED
B
10mV/div
AC-COUPLED
A-B 10mV/div
10µs/div
Figure 10. Differential Power-Up Glitch (0.1V/µs)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX3362.PDF ] | |
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