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PDF XR33202 Data sheet ( Hoja de datos )

Número de pieza XR33202
Descripción Wide Supply TIA-485/TIA-422 Transceiver
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XR33202
Wide Supply TIA-485/TIA-422 Transceiver
with 1.65V-5.5V I/O Interface
Description
The XR33202 is a high performance TIA-485/TIA-422 transceiver
designed to meet the increasing system requirements found in
today’s portable/handheld, process control and industrial equipment
environments. This is a wide supply (3.0V to 5.5V) device that operates
at maximum data rate of 20Mbps and features a 1.65V to 5.5V I/O logic
supply, simplifying multi-voltage system interfacing requirements.
The receiver includes full fail-safe circuitry, guaranteeing a logic-
high receiver output when the receiver inputs are open, shorted or
undriven. The XR33202 receiver input impedance is at least 96kΩ
(1/8 unit load), allowing more than 256 devices on the bus.
The driver is protected by short circuit detection as well as thermal
shutdown and maintains high impedance in shutdown or when
powered off. The XR33202 does not have slew limiting and is intended
for high speed applications requiring data rates up to 20Mbps.
The DE and RE pins include hot swap circuitry to prevent false
transitions on the bus during power up or live insertion and can enter
a 1µA low current shutdown mode for extreme power savings.
The XR33202 is a half-duplex device that operates at max data rates
of 20Mbps. It is available in a 10-pin DFN package.
FEATURES
■■ Wide 3.0V to 5.5V supply operation
■■ 1.65V to 5.5V I/O logic interface VL pin
■■ Enhanced receiver fail-safe protection for
open, shorted or terminated but idle
data lines
■■ Hot swap glitch protection on DE and
RE Pins
■■ Robust ESD (Electrostatic Discharge)
protection for TIA-485 bus pins
±15kV human body model
±15kV IEC61000-4-2 air discharge
±8kV IEC61000-4-2
contact discharge
■■ Driver short circuit limit and thermal
shutdown for overload protection
■■ -40°C to 125°C ambient operating
temperature range
■■ Lead-free (RoHS 6) DFN
APPLICATIONS
■■ Portable and handheld equipment
■■ Industrial and process control equipment
■■ Point-of-sale equipment
■■ Building security and automation
Typical Application
2.5V
VCC
UART
TX
RX
2.5V 3.3V
VL
DI
DE
R
RE
VCC
120Ω
3.3V 1.8V
VCC
120Ω
VL
DI
DE
R
RE
1.8V
VCC
TX MICRO
RX PROCESSOR
Figure 1. Typical Application
REV1A
1/7

1 page




XR33202 pdf
XR33202
Electrical Characteristics
Specifications are at TA = 25°C, VCC = 3.3V±10% or 5.0V±10%, VL = VCC unless otherwise noted. Typical values represent
the most likely parametric norm at TA = 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min Typ Max Units
Supply
VCC
Supply voltage range
ICC Supply current
ISHDN
ESD Protection
Supply current in shutdwon mode
ESD protection for TIA-485 bus pins
(A/Y, B/Z)
ESD protection for all other pins
3.0 5.5
No load. RE = 0V,
DE = VL, DI = 0V
No load. RE = VL,
DE = VL, DI = 0V
No load. RE = 0V, DE = 0V,
receiver A and B inputs open
400 600
300 600
300 500
RE = VL, DE = 0V
0.05 3
Human body model (HBM)
IEC 61000-4-2 airgap
IEC 61000-4-2 contact
Human body model (HBM)
±15
±15
±8
±4
V
μA
μA
μA
μA
kV
kV
kV
kV
Driver AC Characteristics - XR33202
Specifications are at TA = 25°C, VCC = 3.3V±10% or 5.0V±10%, VL = VCC unless otherwise noted. Typical values represent
the most likely parametric norm at TA = 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min Typ Max Units
tDPLH
Driver prop. delay (low to high)
30 ns
tDPHL
|tDPLH-tDPHL|
Driver prop. delay (high to low)
Differential driver output skew
CL = 50pF, RL = 54Ω,
30 ns
5 ns
tDR, tDF
Driver differential output rise or fall time
17 ns
Maximum data rate
1/tUI, duty cycle 40% to 60%
20
Mbps
tDZH
Driver enable to output high
50 ns
tDZL
tDHZ
Driver enable to output low
Driver disable from output high
CL = 50pF, RL = 500Ω,
50 ns
50 ns
tDLZ
tDZH(SHDN)
tDZL(SHDN)
Driver disable from output low
Driver enable from shutdown to
output high
Driver enable from shutdown to
output low
CL = 50pF, RL = 500Ω,
50 ns
250 ns
250 ns
tSHDN
Time to shutdown
50 200 600 ns
REV1A
5/7

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