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參數(shù)資料
| 型號： | MAX3043EWE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 【10kV ESD-Protected, Quad 5V RS-485/RS-422 Transmitters |
| 中文描述： | QUAD LINE DRIVER, PDSO16 |
| 封裝： | SO-16 |
| 文件頁數(shù)： | 7/15頁 |
| 文件大小： | 262K |
| 代理商： | MAX3043EWE |
M
±10kV ESD-Protected, Quad 5V RS-485/RS-422
Transmitters
_______________________________________________________________________________________
7
Detailed Description
The MAX3040
–
MAX3045 are quad RS-485/RS-422 trans-
mitters. They operate from a single +5V power supply
and are designed to give optimum performance when
used with the MAX3093E/MAX3095 5V quad RS-485/
RS-422 receivers or MAX3094E/MAX3096 3V quad
RS-485/RS-422 receivers. The MAX3040
–
MAX3045 only
need 1mA of operating supply current and consume 2nA
when they enter a low-power shutdown mode. The
MAX3040
–
MAX3045 also feature a hot-swap capability
allowing line insertion without erroneous data transfer.
The MAX3042B/MAX3045B are capable of transferring
data up to 20Mbps, the MAX3041/MAX3044 for data
rates up to 2.5Mbps, and the MAX3040/MAX3043 for
data rates up to 250kbps. All transmitter outputs are pro-
tected to ±10kV using the Human Body Model.
±10kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges (ESD) encountered during handling
and assembly. The MAX3040
–
MAX3045 transmitter
outputs have extra protection against electrostatic dis-
charges found in normal operation. Maxim
’
s engineers
have developed state-of-the-art structures to protect
these pins against the application of ±10kV ESD
(Human Body Model), without damage.
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 6a shows the Human Body Model, and Figure
6b shows the current waveform it generates when dis-
charged into low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the device through a
1.5k
resistor.
R
R
V
OD
V
OC
Y
Z
Figure 1. Driver DC Test Circuit
DI
DE
5V
Y
Z
C
DIFF
V
OD
R
DIFF
Figure 2. Driver Timing Test Circuit
DI
3V
0
Z
Y
V
O
0
-V
O
V
O
1.5V
t
PLH
1/2 V
O
10%
t
R
90%
90%
t
PHL
1.5V
1/2 V
O
10%
t
F
V
DIFF
= V (Y) - V (Z)
V
DIFF
t
SKEW =
|
t
PLH
- t
PHL
|
Figure 3. Driver Propagation Delays
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0
Y, Z
V
OL
Y, Z
0
1.5V
1.5V
V
OL
+0.5V
V
OH
-0.5V
2.5V
2.5V
t
ZL(SHDN)
, t
ZL
t
LZ
t
ZH(SHDN)
, t
ZH
t
HZ
DE
Figure 5. Driver Enable and Disable Times
OUTPUT
UNDER TEST
S1
S2
V
CC
C
L
R
L
Figure 4. Driver Enable/Disable Timing Test Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3043EWE+ | 制造商:Maxim Integrated Products 功能描述:?10KV ESD-PROTECTED, QUAD 5V RS-485/RS-422 TRANSMITTERS - Rail/Tube |
| MAX3043EWE-T | 功能描述:RS-422/RS-485 接口 IC 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3044CSE | 功能描述:RS-422/RS-485 接口 IC 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3044CSE+ | 功能描述:RS-422/RS-485 接口 IC Quad 5V RS-485 RS-422 Trx 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX3044CSE+T | 功能描述:RS-422/RS-485 接口 IC Quad 5V RS-485 RS-422 Trx 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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