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ISL8490E の電気的特性と機能

ISL8490EのメーカーはIntersil Corporationです、この部品の機能は「+-15kV ESD Protected 5V Low Power」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL8490E
部品説明 +-15kV ESD Protected 5V Low Power
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL8490E Datasheet, ISL8490E PDF,ピン配置, 機能
ISL8488E, ISL8489E, ISL8490E, ISL8491E
®
Data Sheet
July 26, 2007
www.DataSheet4U.com
FN6073.4
±15kV ESD Protected, 5V, Low Power,
High Speed and Slew Rate Limited, Full
Duplex, RS-485/RS-422 Transceivers
The ISL8488E, ISL8489E, ISL8490E, ISL8491E devices are
ESD protected, BiCMOS, 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. Unlike competitive versions, these Intersil devices
are specified for 10% tolerance supplies (4.5V to 5.5V).
These devices are configured for full duplex (separate Rx
input and Tx output pins) applications, so they are ideal for
RS-422 networks requiring high ESD tolerance on the bus
pins. The ISL8488E, ISL8490E are 8 Ld versions without Rx
and Tx output enables. The other two versions include Rx
and Tx output enable pins in a standard 14 Ld pinout.
The ISL8488E, ISL8489E utilize slew rate limited drivers
which reduce EMI, and minimize reflections from improperly
terminated transmission lines, or unterminated stubs in
multidrop and multipoint applications.
Data rates up to 10Mbps are achievable by using the
ISL8490E, ISL8491E, which feature higher slew rates.
The devices present a “single unit load” to the RS-485 bus,
which allows a total of 32 transmitters and receivers on the
network. For “1/8 unit load” versions (256 devices on the
bus), please refer to the ISL4489E, ISL4491E data sheet.
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.
Features
• RS-485 I/O Pin ESD Protection . . . . . . . . . . . . . ±15kV HBM
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
• High Data Rates (ISL8490E, ISL8491E) . . up to 10Mbps
• Slew Rate Limited for Error Free Data Transmission
(ISL8488E, ISL8489E)
• Single Unit Load Allows up to 32 Devices on the Bus
(See ISL4489E, ISL4491E for 256 Devices on Bus)
• Low Quiescent Current:
- 120µA (ISL8488E)
- 140µA (ISL8489E)
- 370µA (ISL8490E, ISL8491E)
• -7V to +12V Common Mode Input Voltage Range
• Three-State Rx and Tx Outputs (Except ISL8488E,
ISL8490E)
• Full Duplex Pinout
• Operates from a Single +5V Supply (10% Tolerance)
• Current Limiting and Thermal Shutdown for Driver
Overload Protection
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Factory Automation
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
• Level Translators (e.g., RS-232 to RS-422)
• RS-232 “Extension Cords”
PART HALF/FULL
NUMBER DUPLEX
ISL8488E
Full
ISL8489E
Full
ISL8490E
Full
ISL8491E
Full
HIGH ESD?
Yes
Yes
Yes
Yes
TABLE 1. SUMMARY OF FEATURES
NO. OF DEVICES DATA RATE SLEW-RATE
RECEIVER/
QUIESCENT PIN
ALLOWED ON BUS (Mbps)
LIMITED? DRIVER ENABLE? ICC (μA) COUNT
32 0.25 Yes No 120 8
32
0.25 Yes
Yes 140 14
32
10 No
No 370 8
32
10 No
Yes 370 14
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL8490E pdf, ピン配列
ISL8488E, ISL8489E, ISL8490E, ISL8491E
Typical Operating Circuit
2 RO
+5V
1
VCC
A8
R B7
+
0.1µF
RT
ISL8488E, ISL8490E
www.DataSheet4U.com
+5V
+
0.1µF
1
VCC
5Y
6Z
DI 3
D
3 DI
D
Z6
Y5
GND
4
RT 7 B
8A
RO 2
R
GND
4
+5V
2 RO
3 RE
+
0.1µF
14
VCC A 12
RT
R B 11
4 DE
5 DI
D
Z 10
Y9
GND
6, 7
ISL8489E, ISL8491E
+5V
+
0.1µF
14
9 Y VCC
10 Z
DI 5
D
DE 4
RE 3
RT 11 B
12 A
RO 2
R
GND
6, 7
3 FN6073.4
July 26, 2007


3Pages


ISL8490E 電子部品, 半導体
ISL8488E, ISL8489E, ISL8490E, ISL8491E
Test Circuits and Waveforms
www.DataSheet4U.com
VCC
DE
DI
Z
D
Y
R
VOD
R VOC
FIGURE 1. DRIVER VOD AND VOC
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
SKEW = |tPLH (Y or Z) - tPHL (Z or Y)|
FIGURE 2A. TEST CIRCUIT
FIGURE 2B. MEASUREMENT POINTS
FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES
+VOD
-VOD
6 FN6073.4
July 26, 2007

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
ISL8490

5V/ Low Power/ High Speed or Slew Rate Limited/ RS-485/RS-422 Transceivers

Intersil Corporation
Intersil Corporation
ISL8490E

+-15kV ESD Protected 5V Low Power

Intersil Corporation
Intersil Corporation


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