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參數(shù)資料
| 型號： | ISL4485 |
| 廠商： | Intersil Corporation |
| 英文描述： | 【15kV ESD Protected, 20Mbps, 5V, Low Power, RS-485/RS-422 Transceiver |
| 中文描述： | 【15kV的ESD保護，20Mbps的，5V，低功耗，RS-485/RS-422收發(fā)器 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大小： | 403K |
| 代理商： | ISL4485 |
8
temperature drops about 15 degrees. If the contention
persists, the thermal shutdown / reenable cycle repeats until
the fault is cleared. Receivers stay operational during
thermal shutdown.
ESD Protection
All pins on these interface devices include class 3 Human
Body Model (HBM) ESD protection structures, but the
RS-485 pins (driver outputs and receiver inputs) incorporate
advanced structures allowing them to survive ESD events in
excess of
±
15kV HBM. The RS-485 pins are particularly
vulnerable to ESD damage because they typically connect to
an exposed port on the exterior of the finished product.
Simply touching the port pins, or connecting a cable, can
cause an ESD event that might destroy unprotected ICs.
These new ESD structures protect the device whether or not
it is powered up, protect without allowing any latchup
mechanism to activate, and without degrading the RS-485
common mode range of -7V to +12V. This built-in ESD
protection eliminates the need for board level protection
structures (e.g., transient suppression diodes), and the
associated, undesirable capacitive load they present.
Human Body Model Testing
As the name implies, this test method emulates the ESD
event delivered to an IC during human handling. The tester
delivers the charge stored on a 100pF capacitor through a
1.5k
current limiting resistor into the pin under test. The
HBM method determines an ICs ability to withstand the ESD
events typically present during handling and manufacturing.
The RS-485 pin survivability on this high ESD device has
been characterized to be in excess of
±
15kV, for discharges
to GND.
Typical Performance Curves
V
CC
= 5V, T
A
= 25
o
C; Unless Otherwise Specified
FIGURE 7. DRIVER AND RECEIVER WAVEFORMS DRIVING
300 FEET OF CABLE (DOUBLE TERMINATED)
FIGURE 8. DRIVER AND RECEIVER WAVEFORMS DRIVING
450 FEET OF CABLE (DOUBLE TERMINATED)
FIGURE 9. DATA RATE vs DIFFERENTIAL CAPACITANCE
FIGURE 10. SUPPLY CURRENT vs TEMPERATURE
TIME (20ns/DIV)
-3
R
1.5
3
-1.5
0
A - B
0
5
R
0
5
D
DI
RO
DRIVER+CABLE DELAY
(~450ns)
TIME (20ns/DIV)
-3
R
1.5
3
-1.5
0
A - B
0
5
R
0
5
D
DI
RO
DRIVER+CABLE DELAY
(~650ns)
DIFFERENTIAL CAPACITANCE (pF)
D
5001000 2000 3000 4000 5000 6000 7000 8000 9000 10000
0
5
10
15
20
25
30
R
DIFF
= 54
-40
0
TEMPERATURE (
o
C)
50
85
I
C
μ
A
-25
25
75
400
450
500
550
600
650
700
750
DE = V
CC
, RE = X
DE = GND, RE = X
ISL4485E
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PDF描述 |
|---|---|
| ISL4485EIBZ | 【15kV ESD Protected, 20Mbps, 5V, Low Power, RS-485/RS-422 Transceiver |
| ISL4485EIBZ-T | 【15kV ESD Protected, 20Mbps, 5V, Low Power, RS-485/RS-422 Transceiver |
| ISL4485EIB | 【15kV ESD Protected, 20Mbps, 5V, Low Power, RS-485/RS-422 Transceiver |
| ISL4486IU | 5V, Ultra High Speed, PROFIBUS, RS-485/RS-422 Transceivers |
| ISL4486IU-T | 5V, Ultra High Speed, PROFIBUS, RS-485/RS-422 Transceivers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL4485E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:【15kV ESD Protected, 20Mbps, 5V, Low Power, RS-485/RS-422 Transceiver |
| ISL4485EIB | 功能描述:IC TXRX RS-485/422 5V ESD 8-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:發(fā)射器 驅動器/接收器數(shù):4/0 規(guī)程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL4485EIB-T | 功能描述:IC TXRX 1TX/1RX 5V RS-485 8-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
| ISL4485EIBZ | 功能描述:RS-422/RS-485 接口 IC 8LD 15KV HBM 5V RS-485 20 MBPS TRAN RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| ISL4485EIBZ-T | 功能描述:RS-422/RS-485 接口 IC 8LD 15KV HBM 5V RS-485 20 MBPS TR RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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