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PDF XR33053 Data sheet ( Hoja de datos )
| Número de pieza | XR33053 | |
| Descripción | TIA-485/TIA-422 Transceiver | |
| Fabricantes | Exar | |
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XR33053
±60V Fault Tolerant 3.0V to 5.5V
TIA-485/TIA-422 Transceiver
Description
The XR33053 is a high performance TIA-485/TIA-422 device
designed for improved performance in noisy industrial environments
and increased tolerance to system faults.
The analog bus pins can withstand direct shorts up to ±60V and are
protected against ESD events up to ±15kV HBM. An extended ±25V
common mode operating range allows for more reliable operation in
noisy environments.
The receiver includes full fail-safe circuitry, guaranteeing a logic-
high receiver output when the receiver inputs are open, shorted or
undriven. The XR33053 receiver input impedance is at least 120kΩ
(1/10 unit load), allowing more than 320 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 DE and RE pins include hot swap circuitry to prevent false
transitions on the bus during powerup or live insertion and can enter a
1nA low current shutdown mode for extreme power savings.
FEATURES
■■ 3.0V to 5.5V operation
■■ ±60V fault tolerance on analog bus pins
■■ Extended ±25V common mode operation
■■ Robust ESD protection:
±15kV HBM (bus pins)
±4kV HBM (non-bus pins)
■■ Enhanced receiver fail-safe protection for
open, shorted or terminated but idle data
lines
■■ Hot swap glitch protection on DE and
RE pins
■■ Driver short circuit current limit and
thermal shutdown for overload protection
■■ Reduced unit loads allows up to 320
devices on bus
■■ Industry standard 14-pin NSOIC package
■■ -40°C to 85°C ambient operating
temperature range
APPLICATIONS
■■ Industrial control networks
■■ HVAC networks
■■ Building and process automation
■■ Remote utility meter reading
■■ Energy monitoring and control
■■ Long or unterminated transmission lines
Typical Application
5V
VCC
DI
DE
R
RE
FAULT TOLERANT UP TO 60V
60V POWER BUS
5V
VCC
R
RE
DI
DE
Figure 1. Typical Application
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1 page  
XR33053
Electrical Characteristics
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
Conditions
Min Typ Max Units
Driver DC Characteristics
VCC Supply voltage range
3.0 5.5 V
Differential driver output,
4.5V ≤ VCC ≤ 5.5V
VOD
RL = 100Ω (TIA-422), Figure 3
RL = 54Ω (TIA-485), Figure 3
-25V ≤ VCM ≤ 25V, Figure 4
2
1.5
1.5
VCC
VCC
VCC
V
V
V
∆VOD
VCM
∆VCM
VIH
Differential driver output,
3.0V ≤ VCC ≤ 4.5V
Change in magnitude of
differential output voltage, Note 1
Driver common-mode output
voltage (steady state)
Change in magnitude of common-mode
output voltage, Note 1
Logic high input thresholds
(DI, DE and RE)
RL = 100Ω (TIA-422), Figure 3
RL = 54Ω (TIA-485), Figure 3
RL = 100Ω (TIA-422) or
RL = 54Ω (TIA-485), Figure 3
VCC = 3.3V
VCC = 5.0V
0.85
0.65
1
2.0
2.4
VCC
VCC
±0.2
3
±0.2
V
V
V
V
V
V
V
VIL Logic low input thresholds (DI, DE and RE)
Logic input low
0.8 V
VHYS
IIN
IINHS
Input hysteresis (DI, DE and RE)
Logic input current (DI, DE and RE)
Logic input current hot swap (DE and RE)
0V ≤ VIN ≤ VCC,
After first transition, Note 2
Until first transition, Note 2
100 mV
±1 µA
100 ±200 µA
VCC = 0V or 5.5V, VOUT = 12V, DE = 0V
IA, B Input current (A and B)
VCC = 0V or 5.5V, VOUT = -7V, DE = 0V
-80
100 µA
µA
IOL
Output leakage (Y and Z)
Full duplex, Note 2
VOUT = 12V, DE = 0V, VCC = 0V or 5.5V
VOUT = -7V, DE = 0V, VCC = 0V or 5.5V
-80
100 µA
µA
IOSD
Driver short-circuit output current
-60V ≤ VOUT ≤ 60V
DI = 0V or VCC, Figure 5
±250
µA
NOTES:
1. Change in magnitude of differential output voltage and change in magnitude of common mode output voltage are the changes in output voltage when DI input
changes state.
2. The hot swap feature disables the DE and RE inputs for the first 10μs after power is applied. Following this time period, these inputs are weakly pulled to their disabled
state (low for DE, high for RE) until the first transition, after which they become high impedance inputs.
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XR33053
Applications Information
B
R RO
A
RE = OV
CL
B +1V
VID 0V
A –1V
tRPLH
tRPHL
VOH
RO
VCC/2
VCC/2
VOL
Figure 9. Receiver Propagation Delay Test Circuit and Timing Diagram
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet XR33053.PDF ] | |
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