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參數(shù)資料
| 型號： | MAX3250CAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 85 |
| 中文描述： | DUAL LINE TRANSCEIVER, PDSO28 |
| 封裝： | 5.30 MM, MO-150, SSOP-28 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 232K |
| 代理商： | MAX3250CAI |
General Description
The MAX3250 is a 3.0V to 5.5V powered, ±50V isolated
EIA/TIA-232 and V.28/V.24 communications interface
with high data-rate capabilities. The MAX3250 is a dual
die part that operates with up to ±50V difference
between the RS-232 side and the logic side (ISOCOM
to GND). This makes the device ideal for operation in
noisy conditions with high common-mode voltages.
This feature prevents damage to the device if RS-232
lines are inadvertently short-circuited to a +24V or ±48V
power bus.
The MAX3250 is powered by a single 3V to 5.5V supply
on the logic side. Power is transferred from the logic
side to the isolated side by ±100V external capacitors.
The MAX3250 has two receivers (Rx) and two drivers
(Tx) and is guaranteed to run at data rates of 250kbps
while maintaining RS-232 output levels. The trans-
ceivers have a proprietary low-dropout transmitter out-
put stage, delivering true RS-232 performance from a
3V to 5.5V supply with a dual charge pump. The device
features a
FAULT
open-drain output to signal an exces-
sive isolated-side voltage condition on any of the RS-
232 inputs. This output can drive an alarm LED or can
be monitored by the processor to prevent operation
under these conditions. The receiver outputs are high
impedance in shutdown, allowing multiple interfaces
(IrDA, RS-232, RS-485) to be connected to the same
UART.
The MAX3250 is available in a space-saving 28-pin
SSOP package.
Applications
Industrial Control
Programmable Logic Controller
Point-of-Sale Equipment
PC-to-Router Connections
Diagnostic Ports
Telecom Equipment
Features
o
±50V Isolation
o
20μA Supply Current in Shutdown
o
250kbps Guaranteed Data Rate
o
FAULT
Output
o
High-Impedance Transmitter and Receiver
Outputs in Shutdown
o
Space-Saving SSOP Package
o
Inductorless/Transformerless Design Simplifies
EMI Compliance
o
Low-Cost Replacement for Opto-Isolated
Transceivers
o
Meets EIA/TIA-232 Specifications Down to 3.0V
M
±50V Isolated, 3.0V to 5.5V,
250kbps, 2 Tx/2 Rx, RS-232 Transceiver
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
19-2443; Rev 1; 2/03
Typical Operating Circuit appears at end of data sheet.
PART
TEMP RANGE
0
°
C to +70
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
28 SSOP
28 SSOP
MAX3250CAI
MAX3250EAI
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
V
CC
C2-
GND
FAULT
SHDN
N.C.
ISOCOM
N.C.
C2+
ISOV
CC
R1IN
R2IN
T1OUT
T2OUT
V-
C4-
C4+
C3-
V+
C3+
C1+
N.C.
N.C.
T2IN
T1IN
R2OUT
R1OUT
C1-
SSOP
TOP VIEW
MAX3250
Pin Configuration
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3250EAI | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 125 |
| MAX3267 | 1.25Gbps/2.5Gbps, 3V to 5.5V, Low-Noise Transimpedance Preamplifiers for LANs |
| MAX3266 | 32-Bit Digital Signal Controller with Flash 100-BGA MICROSTAR -40 to 125 |
| MAX3266-MAX3267 | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 85 |
| MAX3266CSA | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3250CAI+ | 功能描述:RS-232接口集成電路 3-5.5V 250kbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3250CAI+ | 制造商:Maxim Integrated Products 功能描述:IC RS232 TRANSCEIVER 250KBPS 5.5V SSOP28 |
| MAX3250CAI+T | 功能描述:RS-232接口集成電路 3-5.5V 250kbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3250CAI+W | 制造商:Maxim Integrated Products 功能描述:LINE TRNSCVR 2TR 2TX 2RX 28SSOP - Rail/Tube |
| MAX3250CAI-T | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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