ISL83078E Intersil Corporation, ISL83078E Datasheet

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ISL83078E

Manufacturer Part Number
ISL83078E
Description
(ISL83070E - ISL83078E) RS-485/RS-422 Transceivers
Manufacturer
Intersil Corporation
Datasheet

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±
Low Power, High Speed or Slew Rate
Limited, RS-485/RS-422 Transceivers
The Intersil ISL8307XE are BiCMOS 3.3V powered, single
transceivers that meet both the RS-485 and RS-422
standards for balanced communication. These devices have
very low bus currents (+125µA/-100µA), 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.
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.
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state while the power supply stabilizes.
The ISL83070E through ISL83075E 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.
The ISL83070E, ISL83071E, ISL83073E, ISL83076E,
ISL83077E 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.
ISL83070E
ISL83071E
ISL83072E
ISL83073E
ISL83075E
ISL83076E
ISL83077E
ISL83078E
NUMBER
15kV ESD Protected, 3.3V, Full Fail-safe,
PART
HALF/FULL
DUPLEX
HALF
HALF
HALF
FULL
FULL
FULL
FULL
FULL
DATA RATE
®
(Mbps)
0.25
0.25
0.25
1
0.5
0.5
20
20
20
Data Sheet
SLEW-RATE
ISL83070E, ISL83071E, ISL83072E, ISL83073E,
LIMITED?
ISL83075E, ISL83076E, ISL83077E, ISL83078E
YES
YES
YES
YES
YES
NO
NO
NO
TABLE 1. SUMMARY OF FEATURES
1-888-INTERSIL or 1-888-468-3774
PLUG?
HOT
YES
YES
YES
YES
YES
YES
YES
YES
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
# DEVICES
ON BUS
256
256
256
256
256
256
256
256
Features
• Pb-Free Plus Anneal (RoHS Compliant)
• RS-485 I/O Pin ESD Protection
• Full Fail-safe (Open, Short, Terminated/Floating)
• Hot Plug - Tx and Rx Outputs Remain Three-state During
• True 1/8 Unit Load Allows up to 256 Devices on the Bus
• Single 3.3V Supply
• High Data Rates . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low Quiescent Supply Current . . . . . . . . . . .800
• -7V to +12V Common Mode Input/Output Voltage Range
• Half and Full Duplex Pinouts
• Three State Rx and Tx Outputs Available
• Current Limiting and Thermal Shutdown for driver
• Tiny MSOP package offering saves 50% board space
Applications
• Automated Utility Meter Reading Systems
• High Node Count Systems
• Field Bus Networks
• Security Camera Networks
• Building Environmental Control/ Lighting Systems
• Industrial/Process Control Networks
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
Receivers
Power-up
- Ultra Low Shutdown Supply Current . . . . . . . . . . .10nA
Overload Protection
March 21, 2006
All other trademarks mentioned are the property of their respective owners.
ENABLE?
RX/TX
|
YES
YES
YES
YES
YES
YES
NO
NO
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
QUIESCENT
I
CC
510
510
510
510
510
510
510
510
(µA)
. . . . . . . . . . . . . ±
SHUTDOWN?
LOW POWER
YES
YES
YES
YES
YES
YES
NO
NO
FN6115.3
15kV HBM
µ
A (Max)
COUNT
PIN
14
14
14
8
8
8
8
8

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ISL83078E Summary of contents

Page 1

... FULL 20 ISL83078E HALF 20 1 ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E March 21, 2006 Features • Pb-Free Plus Anneal (RoHS Compliant) • RS-485 I/O Pin ESD Protection - Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM • Full Fail-safe (Open, Short, Terminated/Floating) Receivers • ...

Page 2

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Pinouts ISL83072E, ISL83075E, ISL83078E (MSOP, SOIC) TOP VIEW B A GND Ordering Information (Notes 1, 2) TEMP. PART RANGE PART NO. MARKING (°C) ISL83070EIBZA 83070EIBZ - SOIC M14.15 ...

Page 3

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Pin Descriptions PIN Receiver output: If A-B ≥ -50mV high; If A-B ≤ -200mV low High if A and B are unconnected (floating) or shorted Receiver output enable enabled when RE is low high impedance when RE is high. If the Rx enable function isn’t used, connect RE directly to GND or through a 1kΩ ...

Page 4

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Typical Operating Circuits +3. B/Z A GND 5 +3. GND 4 +3. GND ...

Page 5

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Absolute Maximum Ratings V to Ground Input Voltages DI, DE -0. Input/Output Voltages -9V to +13V -0. Short Circuit Duration Continuous ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to 85°C CAUTION: Stresses above those listed in “ ...

Page 6

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Electrical Specifications Test Conditions: V Note 4 (Continued) PARAMETER SYMBOL Receiver Output Low Voltage V Three-State (high impedance) I OZR Receiver Output Current (Note 12) Receiver Input Resistance R Receiver Short-Circuit Current I OSR Thermal Shutdown Threshold T SUPPLY CURRENT No-Load Supply Current (Note 5) ...

Page 7

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Electrical Specifications Test Conditions: V Note 4 (Continued) PARAMETER SYMBOL Driver Disable from Output Low t Time to Shutdown t SHDN Driver Enable from Shutdown to t ZH(SHDN) Output High Driver Enable from Shutdown to t ZL(SHDN) Output Low DRIVER SWITCHING CHARACTERISTICS (ISL83076E, ISL83077E, ISL83078E, 20Mbps) ...

Page 8

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Electrical Specifications Test Conditions: V Note 4 (Continued) PARAMETER SYMBOL Receiver Enable from Shutdown to t ZH(SHDN) Output High Receiver Enable from Shutdown to t ZL(SHDN) Output Low NOTES: 4. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified ...

Page 9

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES SIGNAL Y GENERATOR PARAMETER OUTPUT Y/Z 0 (Note 7) ZH ...

Page 10

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Test Circuits and Waveforms RE B GND SIGNAL GENERATOR FIGURE 5A. TEST CIRCUIT RE B GND SIGNAL GENERATOR PARAMETER (Note (Note (Note 11) 0 ZH(SHDN) t (Note 11) ...

Page 11

... The 250kbps and 500kbps driver outputs are slew rate limited to minimize EMI, and to reduce reflections in unterminated or improperly terminated networks. Outputs of the ISL83076E - ISL83078E drivers are not limited, so faster output transition times allow data rates of at least 20Mbps. Hot Plug Function When a piece of equipment powers up, there is a period of ...

Page 12

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Typical Performance Curves 120 100 0.5 1 1.5 2 DIFFERENTIAL OUTPUT VOLTAGE (V) FIGURE 7. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE 200 150 LOW ISL83070E thru ISL83075E 100 HIGH -100 ISL8307XE ...

Page 13

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Typical Performance Curves 370 365 360 355 350 t PHL 345 t PLH 340 -40 0 -25 25 TEMPERATURE (°C) FIGURE 13. DRIVER DIFFERENTIAL PROPAGATION DELAY vs TEMPERATURE (ISL83073E, 75E PHL 25 t PLH -40 ...

Page 14

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Typical Performance Curves R DIFF 2.5 B/Z 2 1.5 A/Y 1 0.5 0 TIME (200ns/DIV) FIGURE 19. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL83073E, 75E) R DIFF 2.5 B/Z 2 1.5 A/Y 1 0.5 0 TIME (10ns/DIV) FIGURE 21. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL83076E, 77E, 78E) ...

Page 15

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Mini Small Outline Plastic Packages (MSOP -B- INDEX 1 2 0.20 (0.008) AREA TOP VIEW 0.25 (0.010) GAUGE PLANE SEATING PLANE - 0.10 (0.004) b -H- - 0.20 (0.008) SIDE VIEW 0.20 (0.008) NOTES: 1. These package dimensions are within allowable dimensions of JEDEC MO-187BA ...

Page 16

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication Number 95. ...

Page 17

... ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication Number 95. ...

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