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參數資料
| 型號： | MAX3185EWP |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 5/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 230KPBS 20-SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 36 |
| 類型： | 收發(fā)器 |
| 驅動器/接收器數： | 3/5 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 20-SOIC W |
| 包裝： | 管件 |
_______________Detailed Description
±15kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges encountered during handling and
assembly. The MAX3185 driver outputs and receiver
inputs have extra protection against static electricity
found in normal operation. Maxim’s engineers devel-
oped state-of-the-art structures to protect these pins
against ESD of ±15kV, without damage. After an ESD
event, the MAX3185 continues working without latchup.
ESD protection can be tested in several ways. The
transmitter outputs and the receiver inputs are charac-
terized for protection to the following:
1) ±15kV using the Human Body Model
2) ±8kV using the Contact-Discharge Method specified
in IEC1000-4-2 (formerly IEC801-2)
3) ±15kV using the Air-Gap Method specified in
IEC1000-4-2 (formerly IEC801-2)
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
MAX3185
±15kV ESD-Protected, EMC-Compliant, 230kbps
RS-232 Serial Port for Motherboards/Desktop PCs
_______________________________________________________________________________________
5
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
1
VDD
Supply-Voltage Input, +10.8V to +13.2V
12, 14, 17, 18, 19
R5OUT–R1OUT
Receiver Outputs, swing between GND and VCC
16, 15, 13
T3IN, T2IN, T1IN
Transmitter Inputs
10
VSS
Supply-Voltage Input, -10.8V to -13.2V
11
GND
Ground. Connect system to ground.
2, 3, 4, 7, 9
R1IN–R5IN
Receiver Inputs
5, 6, 8
T1OUT, T2OUT, T3OUT
Transmitter Outputs, swing between VDD and VSS
20
VCC
Supply-Voltage Input, +4.5V to +5.5V
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC 50M to 100M
RD 330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
tr = 0.7ns to 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
Figure 1a. IEC1000-4-2 ESD Test Model
Figure 1b. IEC1000-4-2 ESD-Generator Current Waveform
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