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ISL32472E の電気的特性と機能

ISL32472EのメーカーはIntersilです、この部品の機能は「Fault Protected - Extended Common Mode Range RS-485/RS-422 Transceivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL32472E
部品説明 Fault Protected - Extended Common Mode Range RS-485/RS-422 Transceivers
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL32472E Datasheet, ISL32472E PDF,ピン配置, 機能
Fault Protected, Extended Common Mode Range,
RS-485/RS-422 Transceivers with ±16.5kV ESD
ISL32470E, ISL32472E, ISL32475E, ISL32478E
The ISL32470E, ISL32472E, ISL32475E, ISL32478E are
fault-protected, extended common mode range differential
transceivers that exceed the RS-485 and RS-422 standards for
balanced communication. The RS-485 bus pins (driver outputs
and receiver inputs) are fault protected against overvoltages up to
±60V and are protected against ±16.5kV ESD strikes without
latch-up. Additionally, these transceivers operate in environments
with common mode voltages up to ±15V (exceeds the RS-485
requirement), making this fault-protected RS-485 family one of
the more robust on the market.
Transmitters (Tx) deliver an exceptional 2.5V (typical) differential
output voltage into the RS-485 specified 54load. This yields
better noise immunity than standard RS-485 ICs or allows up to
six 120terminations in star topologies.
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating, shorted, or
on a terminated but undriven (idle) bus. Rx outputs feature high
drive levels; typically, 15mA @ VOL = 1V (to ease the design of
opto-coupled isolated interfaces).
Half duplex (Rx inputs and Tx outputs multiplexed together) and
full duplex pinouts are available. See Table 1 on page 2 for key
features and configurations by device number.
For a fault-protected RS-485 transceiver with a ±25V extended
common mode range, please see the ISL32490E and ISL32483E
data sheets.
Features
• Fault-Protected RS-485 Bus Pins . . . . . . . . . . . . . . Up to ±60V
• Extended Common Mode Range . . . . . . . . . . . . . . . . . . . ±15V
Larger Than Required for RS-485
• 1/4 Unit Load for Up to 128 Devices on the Bus
±16.5kV HBM ESD Protection on RS-485 Bus Pins
• High Transient Over-Voltage Tolerance . . . . . . . . . . . . . . .±80V
• Full Fail-Safe (Open, Short, Terminated) RS-485 Receivers
• High Rx IOL for Opto-Couplers in Isolated Designs
• Hot Plug Circuitry: Tx and Rx Outputs Remain Three-State
During Power-Up/Power-Down
• Choice of RS-485 Data Rates . . . . . . . . . . . .250kbps to 15Mbps
• Low Quiescent Supply Current . . . . . . . . . . . . . . . . . . . 2.3mA
• Ultra Low Shutdown Supply Current . . . . . . . . . . . . . . . . 10µA
Applications
• Utility Meters/Automated Meter Reading Systems
• High Node Count RS-485 Systems
• PROFIBUS® and RS-485 Based Field Bus Networks, and
Factory Automation
• Security Camera Networks
• Building Lighting and Environmental Control Systems
• Industrial/Process Control Networks
20
B
15
A
10
VID = ±1V
5
RO
0
-5
www.DataSheet4U.com
TIME (20ns/DIV)
FIGURE 1. EXCEPTIONAL Rx OPERATES AT >15Mbps EVEN WITH
±15V COMMON MODE VOLTAGE
15
12
0
-7
-15
STANDARD RS-485
TRANSCEIVER
ISL3247xE
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE
RANGE vs STANDARD RS-485 DEVICES
January 21, 2011
FN7784.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL32472E pdf, ピン配列
ISL32470E, ISL32472E, ISL32475E, ISL32478E
Pin Descriptions
PIN
NAME
RO
RE
DE
DI
GND
A/Y
B/Z
A
B
Y
Z
VCC
NC
8 LD
PIN #
1
2
3
4
5
6
7
-
-
-
-
8
-
14 LD
PIN #
FUNCTION
2 Receiver output. If A-B 10mV, RO is high; if A-B 200mV, RO is low; RO = High if A and B are unconnected (floating),
shorted together, or connected to an undriven, terminated bus.
3 Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Internally pulled low.
4 Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is
low. Internally pulled high.
5 Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z
low.
6, 7 Ground connection.
- ±60V Fault and ±16.5kV HBM ESD Protected, RS-485/RS-422 level, non-inverting receiver input and non-inverting driver
output. Pin is an input if DE = 0; pin is an output if DE = 1.
- ±60V Fault and ±16.5kV HBM ESD Protected, RS-485/RS-422 level, inverting receiver input and inverting driver output.
Pin is an input if DE = 0; pin is an output if DE = 1.
12 ±60V Fault and ±15kV HBM ESD Protected, RS-485/RS-422 level, non-inverting receiver input.
11 ±60V Fault and ±15kV HBM ESD Protected, RS-485/RS-422 level, inverting receiver input.
9 ±60V Fault and ±15kV HBM ESD Protected, RS-485/RS-422 level, non-inverting driver output.
10 ±60V Fault and ±15kV HBM ESD Protected, RS-485/RS-422 level, inverting driver output.
14 System power supply input (4.5V to 5.5V).
1, 8, 13 No Internal Connection.
Truth Tables
TRANSMITTING
INPUTS
OUTPUTS
RE DE DI
Z
Y
X1101
X1010
0
0
X
High-Z
High-Z
1
0
X
High-Z
High-Z
(see Note) (see Note)
NOTE: Low Power Shutdown Mode (see Note 11, page 9).
RECEIVING
INPUTS
RE DE
DE
Half Duplex Full Duplex
A-B
00
X -0.01V
00
X -0.2V
00
X Inputs
Open/Shorted
10
0
X
11
1
X
NOTE: Low Power Shutdown Mode (see Note 11, page 9).
OUTPUT
RO
1
0
1
High-Z
(see Note)
High-Z
www.DataSheet4U.com
3 FN7784.0
January 21, 2011


3Pages


ISL32472E 電子部品, 半導体
ISL32470E, ISL32472E, ISL32475E, ISL32478E
Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are VCC = 5V, TA = +25°C
(Note 6). Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
MIN
MAX
(°C) (Note 14) TYP (Note 14) UNITS
Input/Output Current (A/Y, B/Z)
IIN2 DE = 0V, VCC = 0V or VIN = 12V
5.5V
VIN = -7V
VIN = ±15V
VIN = ±60V
(Note 16)
Full - 110 250
Full -200 -75
-
Full
-800
±240
800
Full -6 ±0.5 6
µA
µA
µA
mA
Input Current (A, B)
(Full Duplex Versions Only)
IIN3 VCC = 0V or 5.5V VIN = 12V
VIN = -7V
VIN = ±15V
VIN = ±60V
(Note 16)
Full -
90 125
Full -100 -70
-
Full
-500
±200
500
Full -3 ±0.4 3
µA
µA
µA
mA
Output Leakage Current (Y, Z)
(Full Duplex Versions Only)
IOZD RE = 0V, DE = 0V, VIN = 12V
VCC = 0V or 5.5V
VIN = -7V
VIN = ±15V
VIN = ±60V
(Note 16)
Full -
20 200
Full -100
-5
-
Full -500 ±40 500
Full -3 ±0.1 3
µA
µA
µA
mA
Receiver Differential Threshold
Voltage
VTH -15V VCM 15V
Full
-200
-100
-10
mV
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Receiver Output Low Current
Three-State (High Impedance)
Receiver Output Current
ΔVTH
VOH
VOL
IOL
IOZR
-15V VCM 15V
IO = -2mA, VID = -10mV
IO = -8mA, VID = -10mV
IO = 6mA, VID = -200mV
VO = 1V, VID = -200mV
0V VO VCC
25 - 25
Full VCC - 0.5 4.75
Full 2.8 4.2
Full - 0.27
Full 15
22
Full -1 0.01
-
-
-
0.4
-
1
mV
V
V
V
mA
µA
Receiver Short-Circuit Current
SUPPLY CURRENT
IOSR
0V VO VCC
Full ±12
-
±110
mA
No-Load Supply Current (Note 7)
Shutdown Supply Current
ESD PERFORMANCE
ICC
ISHDN
DE = VCC, RE = 0V or VCC,
DI = 0V or VCC
DE = 0V, RE = VCC, DI = 0V or VCC
Full
-
2.3 4.5
mA
Full -
10 50
µA
RS-485 Pins (A, Y, B, Z, A/Y, B/Z)
Human Body Model, 1/2 Duplex
From Bus Pins to
GND
Full Duplex
25 - ±16.5 -
25 - ±15 -
kV
kV
All Pins
Human Body Model, per JEDEC
25 - ±8 -
kV
www.DataSheet4U.com
Machine Model
DRIVER SWITCHING CHARACTERISTICS (250kbps Versions; ISL32470E and ISL32472E)
25
- ±700 -
V
Driver Differential Output Delay
Driver Differential Output Skew
Driver Differential Rise or Fall Time
tPLH, tPHL
tSKEW
tR, tF
RD = 54, CD = 50pF (Figure 4)
RD = 54, CD = 50pF (Figure 4)
RD = 54, CD = 50pF (Figure 4)
Full - 320 450
Full -
6 30
Full 400 650 1200
ns
ns
ns
6 FN7784.0
January 21, 2011

6 Page



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部品番号部品説明メーカ
ISL32472E

Fault Protected - Extended Common Mode Range RS-485/RS-422 Transceivers

Intersil
Intersil


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