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ISL4485E の電気的特性と機能

ISL4485EのメーカーはIntersil Corporationです、この部品の機能は「15kV ESD Protected/ 20Mbps/ 5V/ Low Power/ RS-485/RS-422 Transceiver」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL4485E
部品説明 15kV ESD Protected/ 20Mbps/ 5V/ Low Power/ RS-485/RS-422 Transceiver
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL4485E Datasheet, ISL4485E PDF,ピン配置, 機能
®
Data Sheet
December 2003
ISL4485E
FN6049.1
±15kV ESD Protected, 20Mbps, 5V, Low
Power, RS-485/RS-422 Transceiver
The Intersil ISL4485E is a high speed, BiCMOS 5V
powered, single transceiver that meets both the RS-485 and
RS-422 standards for balanced communication. Each driver
output/receiver input is protected against ±15kV ESD
strikes, without latch-up. Unlike competitive devices, this
Intersil device is specified for 10% tolerance supplies (4.5V
to 5.5V).
The excellent differential output voltage coupled with high
drive-current output stages allow 20Mbps operation over
twisted pair networks up to 450 feet in length. The 25k
receiver input resistance presents a “single unit load” to the
RS-485 bus, allowing up to 32 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.
The half duplex configuration multiplexes the Rx inputs and
Tx outputs to allow transceivers with Rx and Tx disable
functions in 8 lead packages.
Ordering Information
PART NO.
(BRAND)
ISL4485EIB
(4485EIB)
ISL4485EIB-T
(4485EIB)
TEMP.
RANGE (oC)
PACKAGE
-40 to 85 8 Ld SOIC
-40 to 85 8 Ld SOIC
Tape & Reel
PKG. DWG. #
M8.15
M8.15
Pinout
ISL4485E (SOIC)
TOP VIEW
RO 1
RE 2
DE 3
DI 4
R
D
8 VCC
7 B/Z
6 A/Y
5 GND
Features
• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• RS-485 I/O Pin ESD Protection . . . . . . . . . . ±15kV HBM
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
• Operates from a Single +5V Supply (10% Tolerance)
• 1 Unit Load Allows up to 32 Devices on the Bus
• Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 590µA
• -7V to +12V Common Mode Input Voltage Range
• Three State Rx and Tx Outputs
• 30ns Propagation Delays, 2ns Skew
• Current Limiting and Thermal Shutdown for driver
Overload Protection
Applications
• SCSI “Fast 20” Drivers and Receivers
• Data Loggers
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
• Level Translators
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





ISL4485E pdf, ピン配列
ISL4485E
Absolute Maximum Ratings
VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input Voltages
DI, DE, RE . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC +0.5V)
Input / Output Voltages
A / Y, B / Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +12.5V
RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC +0.5V)
Short Circuit Duration
Y, Z. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table
Thermal Information
Thermal Resistance (Typical, Note 1)
θJA (oC/W)
8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . .
170
Moisture Sensitivity (see Technical Brief TB363)
All Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 1
Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
(Lead Tips Only)
Operating Conditions
Temperature Range
ISL4485EIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Test Conditions: VCC
Typicals are at VCC =
= 4.5V
5V, TA
to
=
5.5V; Unless
25oC, Note 2
Otherwise
Specified.
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(oC) MIN TYP MAX UNITS
DC CHARACTERISTICS
Driver Differential VOUT (no load)
Driver Differential VOUT (with load)
VOD1
VOD2
R = 50(RS-422), (Figure 1)
R = 27(RS-485), (Figure 1)
Full -
Full 2
Full 1.5
- VCC
3-
2.3 5
V
V
V
Change in Magnitude of Driver
Differential VOUT for
Complementary Output States
VOD R = 27or 50, (Figure 1)
Full - 0.01 0.2 V
Driver Common-Mode VOUT
Change in Magnitude of Driver
Common-Mode VOUT for
Complementary Output States
VOC
VOC
R = 27or 50, (Figure 1)
R = 27or 50, (Figure 1)
Full - - 3 V
Full - 0.01 0.2 V
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Input Current (A, B), (Note 5)
Receiver Differential Threshold
Voltage
VIH DE, DI, RE
VIL DE, DI, RE
IIN1 DE, DI, RE
IIN2 DE = 0V, VCC = 0V or VIN = 12V
4.5 to 5.5V
VIN = -7V
VTH -7V VCM 12V
Full 2 - - V
Full -
- 0.8 V
Full -25 - 25 µA
Full - - 1 mA
Full -
- -0.8 mA
Full -0.2 - 0.2 V
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (high impedance)
Receiver Output Current
VTH
VOH
VOL
IOZR
VCM = 0V
IO = -4mA, VID = 200mV
IO = -4mA, VID = 200mV
0.4V VO 2.4V
25 - 70 - mV
Full 3.5
4
-V
Full -
0.1 0.4 V
Full -
- ±1 µA
Receiver Input Resistance
No-Load Supply Current, (Note 3)
RIN -7V VCM 12V
ICC
DI, RE = 0V or VCC
DE = VCC
DE = 0V
Full 12
Full -
Full -
25 - k
590 900 µA
360 500 µA
Driver Short-Circuit Current,
VO = High or Low
Receiver Short-Circuit Current
IOSD1 DE = VCC, -7V VY or VZ 12V, (Note 4)
IOSR 0V VO VCC
Full 35
Full 7
- 250 mA
- 85 mA
3


3Pages


ISL4485E 電子部品, 半導体
ISL4485E
Test Circuits and Waveforms (Continued)
VCC
DE
DI
SIGNAL
GENERATOR
Z
D
Y
60
+
CD = 200pF
VOD
-
DI
DIFF OUT (Y - Z)
-VOD
3V
0V
+VOD 0V
FIGURE 4A. TEST CIRCUIT
FIGURE 4B. MEASUREMENT POINTS
FIGURE 4. DRIVER DATA RATE
+1.5V
RE
B
A
RO
R
15pF
SIGNAL
GENERATOR
3V
A 1.5V 1.5V
0V
tPLH
tPHL
VCC
RO
50%
50%
0V
FIGURE 5A. TEST CIRCUIT
FIGURE 5B. MEASUREMENT POINTS
FIGURE 5. RECEIVER PROPAGATION DELAY
SIGNAL
GENERATOR
RE
B
A
RO
R
1k
15pF
VCC
SW GND
PARAMETER
tHZ
tLZ
tZH
tZL
DE A SW
0
+1.5V
GND
0
-1.5V
VCC
0
+1.5V
GND
0
-1.5V
VCC
RE
tZH
RO
tZL
RO
1.5V
1.5V
3V
0V
tHZ
OUTPUT HIGH
1.5V
VOH - 0.5V VOH
0V
tLZ
1.5V
OUTPUT LOW
VCC
VOL + 0.5V VOL
FIGURE 6A. TEST CIRCUIT
FIGURE 6B. MEASUREMENT POINTS
FIGURE 6. RECEIVER ENABLE AND DISABLE TIMES
6

6 Page



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共有リンク

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部品番号部品説明メーカ
ISL4485

15kV ESD Protected/ 20Mbps/ 5V/ Low Power/ RS-485/RS-422 Transceiver

Intersil Corporation
Intersil Corporation
ISL4485E

15kV ESD Protected/ 20Mbps/ 5V/ Low Power/ RS-485/RS-422 Transceiver

Intersil Corporation
Intersil Corporation


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