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參數(shù)資料
| 型號： | ISL83088EIUZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | +-15kV ESD Protected, 5V, Full Fail-Safe, Fractional (1/8) Unit Load, RS-485/RS-422 Transceivers |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MO-187AA, MSOP-8 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大小： | 830K |
| 代理商： | ISL83088EIUZ-T |
1
FN6085.6
ISL83080E, ISL83082E, ISL83083E,
ISL83085E, ISL83086E, ISL83088E
±15kV ESD Protected, 5V, Full Fail-Safe,
Fractional (1/8) Unit Load, RS-485/RS-422
Transceivers
The ISL8308XE are BiCMOS, ESD protected, 5V powered,
single transceivers that meet both the RS-485 and RS-422
standards for balanced communication. Each driver output,
and receiver input, is protected against
±
15kV ESD strikes
without latch-up, and unlike competitive products, this Intersil
family is specified for 10% tolerance supplies (4.5V to 5.5V).
These devices have very low bus currents (+125
μ
A/-75
μ
A),
so they present a true “1/8 unit load” to the RS-485 bus. This
allows up to 256 transceivers on the network without violating
the RS-485 specification’s 32 unit load maximum, and without
using repeaters. For example, in a remote utility meter reading
system, individual meter readings are routed to a concentrator
via an RS-485 network, so the high allowed node count
minimizes the number of repeaters required. Data for all
meters is then read out from the concentrator via a single
access port, or a wireless link.
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or terminated but undriven.
The ISL83080E, ISL83082E, ISL83083E, ISL83085E utilize
slew rate limited drivers which reduce EMI, and minimize
reflections from improperly terminated transmission lines, or
unterminated stubs in multidrop and multipoint applications.
Slew rate limited versions also include receiver input filtering to
enhance noise immunity in the presence of slow input signals.
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state until the power supply has
stabilized, and the Tx outputs are fully short circuit protected.
The ISL83080E, ISL83083E, ISL83086E are configured for
full duplex (separate Rx input and Tx output pins)
applications. The half duplex versions multiplex the Rx inputs
and Tx outputs to allow transceivers with output disable
functions in 8 lead packages.
Features
Pb-Free Plus Anneal Available (RoHS Compliant)
(See Ordering Info)
RS-485 I/O Pin ESD Protection . . . . . . . . . .
±
15kV HBM
Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV
Full Fail-safe (Open, Short, Terminated and Floating)
Receivers
Hot Plug Circuitry (ISL83080E, ISL83082E, ISL83083E,
ISL83085E)
- Tx and Rx Outputs Remain Three-state During Power-
up/Power-down
True 1/8 Unit Load Allows up to 256 Devices on the Bus
Specified for Single 5V, 10% Tolerance, Supplies
High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 10Mbps
Low Quiescent Supply Current . . . . . . . . . . . . . . . 530
μ
A
Ultra Low Shutdown Supply Current . . . . . . . . . . . . 70nA
-7V to +12V Common Mode Input Voltage Range
Half and Full Duplex Pinouts
Three-State Rx and Tx Outputs
Current Limiting and Thermal Shutdown for driver
Overload Protection
Applications
Automated Utility Meter Reading Systems
High Node Count Systems
Factory Automation
Field Bus Networks
Security Camera Networks
Building Environmental Control Systems
Industrial/Process Control Networks
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
HALF/FULL
DUPLEX
DATA RATE
(Mbps)
SLEW-RATE
LIMITED
HOT PLUG
# DEVICES
ON BUS
Rx/Tx
ENABLE
QUIESCENT
I
CC
(
μ
A)
LOW POWER
SHUTDOWN
PIN
COUNT
ISL83080E
Full
0.115
Yes
Yes
256
Yes
530
Yes
14
ISL83082E
Half
0.115
Yes
Yes
256
Yes
530
Yes
8
ISL83083E
Full
0.5
Yes
Yes
256
Yes
530
Yes
14
ISL83085E
Half
0.5
Yes
Yes
256
Yes
530
Yes
8
ISL83086E
Full
10
No
No
256
Yes
530
Yes
14
ISL83088E
Half
10
No
No
256
Yes
530
Yes
8
Data Sheet
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004-2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
September 12, 2005
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