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ISL3178E の電気的特性と機能

ISL3178EのメーカーはIntersil Corporationです、この部品の機能は「(ISL3170E - ISL3178E) RS-485/RS-422 Transceivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL3178E
部品説明 (ISL3170E - ISL3178E) RS-485/RS-422 Transceivers
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL3178E Datasheet, ISL3178E PDF,ピン配置, 機能
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E,
® ISL3175E, ISL3176E, ISL3177E, ISL3178E
Data Sheet
August 28, 2006
FN6307.2
±15kV ESD Protected, 3.3V, Full Fail-safe,
Low Power, High Speed or Slew Rate
Limited, RS-485/RS-422 Transceivers
The Intersil ISL317XE are ±15kV IEC61000 ESD Protected,
3.3V powered, single transceivers that meet both the
RS-485 and RS-422 standards for balanced communication.
These devices 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 transceivers on the network without violating
the RS-485 specification’s 32 unit load maximum, and without
using repeaters. For example, in a remote utility meter reading
system, individual meter readings are routed to a concentrator
via an RS-485 network, so the high allowed node count
minimizes the number of repeaters required.
Receiver (Rx) inputs feature a “Full Fail-Safe” design, which
ensures a logic high Rx output if Rx inputs are floating,
shorted, or terminated but undriven.
Hot Plug circuitry ensures that the Tx and Rx outputs remain
in a high impedance state while the power supply stabilizes.
Features
IEC61000 ESD Protection on RS-485 I/O Pins . . . . . ±15kV
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
• Pb-Free Plus Anneal Available (RoHS Compliant)
• Full Fail-safe (Open, Short, Terminated/Floating)
Receivers
• Hot Plug - Tx and Rx Outputs Remain Three-state During
Power-up
• True 1/8 Unit Load Allows up to 256 Devices on the Bus
• Single 3.3V Supply
• High Data Rates . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low Quiescent Supply Current . . . . . . . . . . .800μA (Max)
- Ultra Low Shutdown Supply Current . . . . . . . . . . .10nA
• -7V to +12V Common Mode Input/Output Voltage Range
• Half and Full Duplex Pinouts
• Three State Rx and Tx Outputs Available
The ISL3170E through ISL3175E utilize slew rate limited
drivers which reduce EMI, and minimize reflections from
www.DataSheet4U.coimmproperly terminated transmission lines, or unterminated
stubs in multidrop and multipoint applications. Slew rate limited
versions also include receiver input filtering to enhance noise
immunity in the presence of slow input signals.
The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E,
ISL3177E are configured for full duplex (separate Rx input
and Tx output pins) applications. The half duplex versions
multiplex the Rx inputs and Tx outputs to allow transceivers
with output disable functions in 8 lead packages.
• Current Limiting and Thermal Shutdown for driver
Overload Protection
• Tiny MSOP Packages Consume 50% Less Board Space
Applications
• Automated Utility Meter Reading Systems
• High Node Count Systems
• Field Bus Networks
• Security Camera Networks
• Building Environmental Control/ Lighting Systems
• Industrial/Process Control Networks
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ISL3170E
HALF/FULL DATA RATE SLEW-RATE
DUPLEX
(Mbps)
LIMITED?
FULL
0.25
YES
HOT
PLUG?
YES
# DEVICES
ON BUS
256
RX/TX
ENABLE?
YES
QUIESCENT
ICC (μA)
510
LOW POWER
SHUTDOWN?
YES
PIN
COUNT
10, 14
ISL3171E
FULL
0.25
YES
YES
256
NO
510
NO 8
ISL3172E
HALF
0.25
YES
YES
256
YES
510
YES
8
ISL3173E
FULL
0.5
YES
YES
256
YES
510
YES
10, 14
ISL3174E
FULL
0.5
YES
YES
256
NO
510
NO 8
ISL3175E
HALF
0.5
YES
YES
256
YES
510
YES
8
ISL3176E
FULL
20
NO
YES
256
YES
510
YES
10, 14
ISL3177E
FULL
20
NO
YES
256
NO
510
NO 8
ISL3178E
HALF
20
NO
YES
256
YES
510
YES
8
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. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL3178E pdf, ピン配列
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
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 *
NOTE: *Shutdown Mode (See Note 9), except for ISL3171E,
ISL3174E, ISL3177E
RECEIVING
INPUTS
OUTPUT
RE DE
DE
Half Duplex Full Duplex
A-B
RO
00
X -0.05V 1
00
X -0.2V 0
00
X Inputs 1
Open/Shorted
10
0
X High-Z *
11
1
X High-Z
NOTE: *Shutdown Mode (See Note 9), except for ISL3171E,
ISL3174E, ISL3177E
Pin Descriptions
PIN FUNCTION
RO Receiver output: If A-B -50mV, RO is high; If A-B -200mV, RO is low; RO = High if A and B are unconnected (floating) or shorted.
RE Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function isn’t used,
connect RE directly to GND or through a 1kΩ to 3kΩ resistor to GND.
DE Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and are high impedance when DE is low. If the
Tx enable function isn’t used, connect DE to VCC through a 1kΩ to 3kΩ resistor.
DI 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.
GND Ground connection.
A/Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input if
DE = 0; pin is an output if DE = 1.
B/Z ±15kV IEC61000 ESD Protected RS-485/422 level, Inverting receiver input and inverting driver output. Pin is an input if DE = 0;
pin is an output if DE = 1.
A ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting receiver input.
B ±15kV IEC61000 ESD Protected RS-485/422 level, inverting receiver input.
Y ±15kV IEC61000 ESD Protected RS-485/422 level, noninverting driver output.
Z ±15kV IEC61000 ESD Protected RS-485/422 level, inverting driver output.
VCC System power supply input (3.0V to 3.6V).
NC No Connection.
3 FN6307.2
August 28, 2006


3Pages


ISL3178E 電子部品, 半導体
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Electrical Specifications Test Conditions: VCC = 3.0V to 3.6V; Unless Otherwise Specified. Typicals are at VCC = 3.3V, TA = +25°C,
Note 4 (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
TYP MAX UNITS
Receiver Output Low Voltage
Three-State (high impedance)
Receiver Output Current (Note 12)
VOL
IOZR
IO = -4mA, VID = -200mV
0.4V VO 2.4V
Full
-
0.17 0.4
V
Full
-1
0.015
1
μA
Receiver Input Resistance
Receiver Short-Circuit Current
Thermal Shutdown Threshold
SUPPLY CURRENT
RIN
IOSR
TSD
-7V VCM 12V
0V VO VCC
Full 96 150 - kΩ
Full ±7 30 ±60 mA
Full - 150 - °C
No-Load Supply Current (Note 5)
ICC DI = 0V or VCC
DE = VCC,
Full - 510 800 μA
RE = 0V or VCC
DE = 0V, RE = 0V Full
- 480 700 μA
Shutdown Supply Current
(Note 12)
ISHDN DE = 0V, RE = VCC, DI = 0V or VCC
Full - 0.01 12 μA
ESD PERFORMANCE
RS-485 Pins (A, Y, B, Z, A/Y, B/Z)
IEC61000-4-2, Air-Gap Discharge Method
IEC61000-4-2, Contact Discharge Method
Human Body Model, From Bus Pins to GND
25
25
25
- ±15 - kV
- ±8 - kV
- ±15 - kV
All Pins
HBM, per MIL-STD-883 Method 3015
25 - ±7 - kV
MM 25 - 200 - V
DRIVER SWITCHING CHARACTERISTICS (ISL3170E, ISL3171E, ISL3172E, 250kbps)
Maximum Data Rate
Driver Differential Output Delay
Driver Differential Output Skew
Driver Differential Rise or Fall Time
Driver Enable to Output High
fMAX
tDD
tSKEW
tR, tF
tZH
VOD = ±1.5V, CD = 820pF (Figure 4, Note 16)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RL = 500Ω, CL = 50pF, SW = GND (Figure 3),
(Notes 7, 12)
Full
Full
Full
Full
Full
250 800
- kbps
250 1100 1500 ns
- 6 100 ns
350 960 1600 ns
- 26 600 ns
Driver Enable to Output Low
tZL
RL = 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full
-
200 600 ns
(Notes 7, 12)
Driver Disable from Output High tHZ RL = 500Ω, CL = 50pF, SW = GND (Figure 3), Full - 28 55 ns
(Note 12)
Driver Disable from Output Low
tLZ
RL = 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full
(Note 12)
-
30 55 ns
Time to Shutdown
tSHDN (Notes 9, 12)
Full 50 200 600 ns
Driver Enable from Shutdown to tZH(SHDN) RL = 500Ω, CL = 50pF, SW = GND (Figure 3), Full - 180 700 ns
Output High
(Notes 9, 10, 12)
Driver Enable from Shutdown to
tZL(SHDN) RL = 500Ω, CL = 50pF, SW = VCC (Figure 3),
Full
-
100 700 ns
Output Low
(Notes 9, 10, 12)
DRIVER SWITCHING CHARACTERISTICS (ISL3173E, ISL3174E, ISL3175E, 500kbps)
Maximum Data Rate
Driver Differential Output Delay
Driver Differential Output Skew
Driver Differential Rise or Fall Time
Driver Enable to Output High
fMAX
tDD
tSKEW
tR, tF
tZH
VOD = ±1.5V, CD = 820pF (Figure 4, Note 16)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RDIFF = 54Ω, CD = 50pF (Figure 2)
RL = 500Ω, CL = 50pF, SW = GND (Figure 3),
(Notes 7, 12)
Full
Full
Full
Full
Full
500 1600 - kbps
180 350 800 ns
- 1 30 ns
200 380 800 ns
- 26 350 ns
6 FN6307.2
August 28, 2006

6 Page



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部品番号部品説明メーカ
ISL3178AE

RS-485/RS-422 Transceivers

Intersil Corporation
Intersil Corporation
ISL3178E

(ISL3170E - ISL3178E) RS-485/RS-422 Transceivers

Intersil Corporation
Intersil Corporation


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