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PDF ISL4486IB-T Data sheet ( Hoja de datos )
| Número de pieza | ISL4486IB-T | |
| Descripción | 5V/ Ultra High Speed/ PROFIBUS/ RS-485/RS-422 Transceivers | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
ISL4486, ISL81486
December 2003
FN6060
5V, Ultra High Speed, PROFIBUS,
RS-485/RS-422 Transceivers
The Intersil ISL4486 and ISL81486 are BiCMOS, 5V
powered, single transceivers that meet both the RS-485 and
RS-422 standards for balanced communication, and feature
the larger output voltage and higher data rate - up to
40Mbps - required by high speed PROFIBUS applications.
Unlike competitive products, these Intersil devices are
specified for 10% tolerance supplies (4.5V to 5.5V) and
deliver at least a 2.3V differential output voltage over this
supply range. At the 5% tolerance specified by many
competitors, the ISL4486 delivers an unsurpassed 2.5V
differential signal into a 54Ω total load. This translates into
longer reach, or better data integrity, at the exceptional
40Mbps data rate.
SCSI applications benefit from the ISL4486’s low receiver
and transmitter part-to-part skews, which make it perfect for
high speed parallel applications where large numbers of bits
must be simultaneously captured. The low bit-to-bit skew
eases the timing constraints on the data latching signal.
These devices present a “0.6 unit load” to the RS-485 bus,
which allows up to 50 transceivers on the network.
Receiver (Rx) inputs feature a “fail-safe if open” design,
which ensures a logic high Rx output if Rx inputs are
floating.
Driver (Tx) outputs are short circuit protected, even for
voltages exceeding the power supply voltage. Additionally,
on-chip thermal shutdown circuitry disables the Tx outputs to
prevent damage if power dissipation becomes excessive.
Ordering Information
TEMP.
PART NO. (BRAND) RANGE (oC) PACKAGE
ISL4486IB (4486IB)
-40 to 85 8 Ld SOIC
PKG.
DWG. #
M8.15
ISL4486IB-T (4486IB)
ISL4486IU (4486)
ISL4486IU-T (4486)
ISL81486IB (81486IB)
ISL81486IB-T (81486IB)
ISL81486IU (1486)
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
8 Ld SOIC
M8.15
(Tape and Reel)
8 Ld MSOP
M8.118
8 Ld MSOP
M8.118
(Tape and Reel)
8 Ld SOIC
M8.15
8 Ld SOIC
M8.15
(Tape and Reel)
8 Ld MSOP
M8.118
ISL81486IU-T (1486)
-40 to 85 8 Ld MSOP
M8.118
(Tape and Reel)
Features
• Specified for 10% Tolerance Supplies
• High Data Rates
ISL4486 . . . . . . . . . . . . . . . . . . . . . . . . . . up to 40Mbps
ISL81486 . . . . . . . . . . . . . . . . . . . . . . . . . up to 30Mbps
• Large Differential Output Voltage. . . . . . . . . . 3V into 54Ω
• Low Bit-to-Bit (Part-to-Part) Skew for Parallel Applications
• 0.6 Unit Load Allows up to 50 Devices on the Bus
• ISL81486 is a Drop-In Replacement for the ADM1486
• Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 800µA
• -7V to +12V Common Mode Input Voltage Range
• Three State Rx and Tx Outputs
• 14ns (Max) Propagation Delays, 2ns (Max) Skew
• Operates from a Single +5V Supply (10% Tolerance)
• Current Limiting and Thermal Shutdown for driver
Overload Protection
Applications
• SCSI “Fast 40” Drivers and Receivers
• PROFIBUS DP and FMS Networks
• Factory Automation
• Field Bus Networks
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
Pinout
ISL4486, ISL81486 (SOIC, MSOP)
TOP VIEW
RO 1
RE 2
DE 3
DI 4
R
D
8 VCC
7 B/Z
6 A/Y
5 GND
1 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. 2003. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
Test Circuits and Waveforms
ISL4486, ISL81486
VCC
DE
DI
Z
D
Y
VOD
R
R VOC
VCC
DE
DI
Z
D
Y
VOD
375Ω
RD = 60Ω
VCM
-7V to +12V
375Ω
FIGURE 1A. VOD AND VOC
FIGURE 1B. VOD WITH COMMON MODE LOAD
FIGURE 1. DC DRIVER TEST CIRCUITS
VCC
DE
DI
SIGNAL
GENERATOR
Z
D
Y
CL = 100pF
RDIFF
CL = 100pF
DI
OUT (Y)
OUT (Z)
1.5V
tPLH
50%
tPHL
50%
1.5V
3V
0V
tPHL
50%
VOH
VOL
tPLH
50%
VOH
VOL
DIFF OUT (Y - Z)
90%
10%
tR
90%
10%
tF
+VOD
-VOD
SKEW = |CROSSING PT. OF Y↑ & Z↓ - CROSSING PT. OF Y↓ & Z↑|
FIGURE 2A. TEST CIRCUIT
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
DE
SIGNAL
GENERATOR
DI
Z
D
Y
CL
110Ω
VCC
SW GND
DE
tZH
OUT (Y, Z)
1.5V
1.5V
3V
0V
tHZ
OUTPUT HIGH
2.3V
VOH - 0.5V VOH
0V
PARAMETER OUTPUT RE
DI SW
tHZ
Y/Z
X 1 / 0 GND
tLZ
Y/Z
X 0 / 1 VCC
tZH
Y/Z
X 1 / 0 GND
tZL
Y/Z
X 0 / 1 VCC
FIGURE 3A. TEST CIRCUIT
CL (pF)
50
50
50
50
tZL
OUT (Y, Z)
tLZ
2.3V
OUTPUT LOW
VCC
VOL + 0.5V VOL
FIGURE 3B. MEASUREMENT POINTS
FIGURE 3. DRIVER ENABLE AND DISABLE TIMES
5
5 Page 
ISL4486, ISL81486
Small Outline Plastic Packages (SOIC)
N
INDEX
AREA
E
-B-
H
0.25(0.010) M B M
123
-A-
D
SEATING PLANE
A
L
h x 45o
-C-
e A1
B
0.25(0.010) M C A M B S
µα
0.10(0.004)
C
NOTES:
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006
inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Inter-
lead flash and protrusions shall not exceed 0.25mm (0.010 inch) per
side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater
above the seating plane, shall not exceed a maximum value of
0.61mm (0.024 inch).
10. Controlling dimension: MILLIMETER. Converted inch dimensions
are not necessarily exact.
M8.15 (JEDEC MS-012-AA ISSUE C)
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC
PACKAGE
INCHES
MILLIMETERS
SYMBOL MIN MAX MIN MAX NOTES
A
0.0532 0.0688 1.35
1.75
-
A1
0.0040 0.0098 0.10
0.25
-
B
0.013 0.020 0.33
0.51
9
C
0.0075 0.0098 0.19
0.25
-
D
0.1890 0.1968 4.80
5.00
3
E
0.1497 0.1574 3.80
4.00
4
e 0.050 BSC 1.27 BSC -
H
0.2284 0.2440 5.80
6.20
-
h
0.0099 0.0196 0.25
0.50
5
L
0.016 0.050 0.40
1.27
6
N8
87
α 0o 8o 0o 8o -
Rev. 0 12/93
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11
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