ISL3285E Intersil Corporation, ISL3285E Datasheet

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ISL3285E

Manufacturer Part Number
ISL3285E
Description
(ISL3280E - ISL3285E) RS-485/RS-422 Receivers
Manufacturer
Intersil Corporation
Datasheet

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±16.5kV ESD Protected, +125°C, 3.0V to
5.5V, SOT-23/TDFN Packaged, 20Mbps,
Full Fail-safe, Low Power, RS-485/RS-422
Receivers
The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E,
ISL3284E, ISL3285E are ±16.5kV IEC61000 ESD
Protected, 3.0V to 5.5V powered, single receivers that meet
both the RS-485 and RS-422 standards for balanced
communication. These receivers 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 receivers on the network
without violating the RS-485 specification’s 32 unit load
maximum and without using repeaters.
Receiver 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 ISL3280E and ISL3284E feature an always enabled Rx;
the ISL3281E and ISL3285E feature an active high Rx
enable pin, and the ISL3282E and ISL3283E include an
active low enable pin. All versions are offered in Industrial
and Extended Industrial (-40°C to +125°C) temperature
ranges.
A 26% smaller footprint is available with the ISL3282E and
ISL3285E TDFN package. These devices, plus the
ISL3284E, also feature a logic supply pin (V
V
RE / RE input) to be compatible with another supply voltage
in mixed voltage systems.
For companion single RS-485 transmitters in micro
packages, please see the ISL3293E, ISL3294E, ISL3295E,
ISL3296E, ISL3297E, ISL3298E data sheet.
OH
NUMBER
ISL3280E
ISL3281E
ISL3282E
ISL3283E
ISL3284E
ISL3285E
PART
level of the RO output (and the switching points of the
FUNCTION
1 Rx
1 Rx
1 Rx
1 Rx
1 Rx
1 Rx
®
DATA RATE
1
(Mbps)
20
20
20
20
20
20
Data Sheet
# DEVICES
L
ON BUS
) that sets the
256
256
256
256
256
256
TABLE 1. SUMMARY OF FEATURES
1-888-INTERSIL or 1-888-468-3774
ACTIVE HIGH
ACTIVE HIGH
ACTIVE LOW
ACTIVE LOW
ENABLE?
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
NO
NO
RX
Features
• IEC61000 ESD Protection on RS-485 Inputs
• Pb-Free (RoHS Compliant)
• Wide Supply Range . . . . . . . . . . . . . . . . . . . 3.0V to 5.5V
• Specified for +125°C Operation
• Logic Supply Pin (V
• Full Fail-safe (Open, Short, Terminated/Undriven)
• True 1/8 Unit Load Allows up to 256 Devices on the Bus
• High Data Rates . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low Quiescent Supply Current . . . . . . . . . . 500µA (Max)
• -7V to +12V Common Mode Input Voltage Range
• Tri-statable Rx Available (Active Low or High EN Input)
• 5V Tolerant Logic Inputs When V
Applications
• Clock Distribution
• High Node Count Systems
• Space Constrained Systems
• Security Camera Networks
• Building Environmental Control/Lighting Systems
• Industrial/Process Control Networks
- Class 3 ESD Level on all Other Pins . . . . . . >5kV HBM
Systems (ISL3282E, ISL3284E, ISL3285E Only)
- Very Low Shutdown Supply Current . . . . . . 20µA (Max)
ISL3280E, ISL3281E, ISL3282E,
V
October 18, 2007
ISL3283E, ISL3284E, ISL3285E
L
YES
YES
YES
NO
NO
NO
PIN?
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
QUIESCENT
Copyright Intersil Americas Inc. 2007. All Rights Reserved
I
CC
L
350
350
350
350
350
350
) Eases Operation in Mixed Supply
(µA)
LOW POWER
SHUTDOWN?
CC
≤ 5V
YES
YES
YES
YES
NO
NO
FN6543.2
. . .
COUNT
8-TDFN
8-TDFN
±16.5kV
5-SOT
6-SOT
6-SOT
6-SOT
LEAD

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ISL3285E Summary of contents

Page 1

... Rx output if Rx inputs are floating, shorted, or terminated but undriven. The ISL3280E and ISL3284E feature an always enabled Rx; the ISL3281E and ISL3285E feature an active high Rx enable pin, and the ISL3282E and ISL3283E include an active low enable pin. All versions are offered in Industrial and Extended Industrial (-40° ...

Page 2

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Pinouts ISL3280E (5 LD SOT-23) TOP VIEW GND ISL3282E (8 LD TDFN) TOP VIEW RO 1 GND ISL3284E (6 LD SOT-23) TOP VIEW GND ...

Page 3

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Ordering Information PART NUMBER (Notes 1, 2) ISL3280EFHZ-T ISL3280EIHZ-T ISL3281EFHZ-T ISL3281EIHZ-T ISL3282EFRTZ-T ISL3282EIRTZ-T ISL3283EFHZ-T ISL3283EIHZ-T ISL3284EFHZ-T ISL3284EIHZ-T ISL3285EFRTZ-T ISL3285EIRTZ-T NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 4

... ISL3281E GND 2 4 OUTPUT High-Z* FUNCTION pin, power- levels for the RE (ISL3282E only) and RE (ISL3285E only) pins, and sets the NETWORK WITH ENABLES + 0.1µ RE/RE are internally pulled CC first. CC ≤ and keep ...

Page 5

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Typical Operating Circuits +3. ISL3280E GND 2 NETWORK WITH V 1.8V +3. ISL3282E LOGIC DEVICE (µP, ASIC UART) GND 5 (Continued) NETWORK WITHOUT ENABLES + 0.1µ PIN FOR INTERFACE TO LOWER VOLTAGE LOGIC DEVICES ...

Page 6

... RE -0. Input/Output Voltages -8V to +13V RO (Not ISL3282E, ISL3284E, ISL3285E). . -0. (ISL3282E, ISL3284E, ISL3285E -0. Short Circuit Duration Indefinite ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty ...

Page 7

... CC L ≥ 1kΩ 15pF GND (Figure 2) L ≥ 1kΩ 15pF (Figure ≥ V (ISL3282E, ISL3284E, ISL3285E only); Typicals are at CC TEMP MIN TYP (°C) (Note 10) (Note 11) Full - 0.2 Full - 0.2 Full - 0 0.1 Full -1 0.015 Full - 400 ...

Page 8

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Test Circuits and Waveforms GND SIGNAL GENERATORS FIGURE 1A. TEST CIRCUIT GND SIGNAL GENERATOR PARAMETER A t +1. -1. +1. -1.5V ZL FIGURE 2A. TEST CIRCUIT FIGURE 2. RECEIVER ENABLE AND DISABLE TIMES (EXCEPT ISL3280E AND ISL3284E) ...

Page 9

... FIGURE 3. USING V PIN TO ADJUST LOGIC LEVELS L 9 Wide Supply Range The ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E are designed to operate with a wide range of supply voltages from 3.0V to 5.5V. These devices meet the RS-422 and RS-485 specifications over this full range. Logic Supply (V ISL3285E Only) ...

Page 10

... The result is a more repeatable and predictable test, but equipment limits prevent testing devices at voltages higher than ±9kV. The ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E survive ±9kV contact discharges on the RS-485 pins. Data Rate, Cables, and Terminations RS-485, RS-422 are intended for network lengths up to 4000’ ...

Page 11

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Typical Performance Curves +25° +125° RECEIVER OUTPUT VOLTAGE (V) FIGURE 6. RECEIVER OUTPUT CURRENT vs RECEIVER OUTPUT VOLTAGE 3.3V 2. +25° +125° ...

Page 12

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Typical Performance Curves 5 PLH PHL 4.5 4.0 3.5 3.0 2 2. 1.8V L 1.5 1.0 0.5 0 -40 - TEMPERATURE (°C) FIGURE 12. RECEIVER SKEW vs TEMPERATURE 4 PLH PHL 3.5 3.0 2.5 2 1.8V 1 2.5V L 0.5 0 -40 - TEMPERATURE (°C) FIGURE 14. RECEIVER SKEW vs TEMPERATURE 2 -2.0 4 3. 2.5V 2.0 L 1.0 0 TIME (20ns/DIV) FIGURE 16 ...

Page 13

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Small Outline Transistor Plastic Packages (SOT23- 0.20 (0.008 0.10 (0.004) C WITH PLATING c BASE METAL 4X θ1 SEATING L PLANE θ1 VIEW C 13 P5.064 VIEW C 5 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE ...

Page 14

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Small Outline Transistor Plastic Packages (SOT23-6) 0.20 (0.008 0.10 (0.004) C WITH PLATING c BASE METAL 4X θ1 SEATING PLANE C 4X θ1 VIEW C 14 P6.064 VIEW LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE ...

Page 15

... ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Thin Dual Flat No-Lead Plastic Package (TDFN INDEX AREA TOP VIEW C SIDE VIEW SEATING PLANE D2 (DATUM B) D2 INDEX AREA (DATUM N (Nd-1)Xe REF. BOTTOM VIEW (A1) NX (b) 5 SECTION "C-C" FOR EVEN TERMINAL/SIDE All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’ ...

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