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參數(shù)資料
| 型號(hào)： | ADM1345 |
| 廠(chǎng)商： | Analog Devices, Inc. |
| 英文描述： | Single Supply V.35 Transceiver(單電源RS-422/RS-485收發(fā)器,可發(fā)送和接收差分時(shí)鐘和數(shù)據(jù)信號(hào)) |
| 中文描述： | 單電源.35收發(fā)器（單電源RS-422/RS-485收發(fā)器，可發(fā)送和接收差分時(shí)鐘和數(shù)據(jù)信號(hào)） |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 338K |
| 代理商： | ADM1345 |
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Preliminary Technical Information
Single Supply V.35 Transceiver
ADM1345
FEATURES
Provides All V.35 Differential Clock and Data Signals
on One Chip
Single +5V Supply
Shutdown Mode 1μA Typical I
CC
Pin-Selectable DCE or DTE Configuration
ESD-Protected Transmitter Outputs and Receiver In-
puts up to 10kV
Failsafe Transmitter Outputs are High Impedance
when Disabled, Shutdown or Power Off
Short-Circuit Protected Transmitter Outputs
Complies With CCITT V.35 Specification
Flow-through Pinout for Easy PCB Layout
Second Source for LTC1345
APPLICATIONS
Modems
Telecommunications
Data Routers
GENERAL DESCRIPTION
The ADM1345 is a line transmitter/receiver that can send
and receive the differential clock and data signals for a
V.35 interface while requiring only a single +5V supply.
The device contains three current output differential line
transmitters, three differential receivers, and a charge
pump to generate an on-chip negative supply.
The ADM1345 operates at data rates up to 10Mbaud.
Transmitter outputs are short-circuit protected and are
failsafe, assuming a high impedance state when the trans-
mitters are disabled, the device is shut down, or the power
is off. A Receiver Output Enable pin allows the receiver
outputs to be forced into a high impedance state.
The receiver inputs and transmitter outputs are both pro-
tected against repeated electrostatic discharge (ESD) up to
±10kV.
A complete DCE or DTE V.35 port can be implemented
using only an ADM1345 and 4 x 1μF capacitors for the
charge pump, an external resistor termination network,
and an ADM208E for the control signals.
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
5
13
12
14
9
8
7
6
11
10
V
EE
Y1
Z1
Y2
Y3
Z3
B3
Z2
C2-
A3
B2
A2
B1
A1
C1+
V
CC
C1-
GND
R3
R1
T3
S1
S2
T2
T1
C2+
R2
OE
ADM1345
20
19
18
17
16
15
21
22
23
24
25
26
27
28
TX1
TX2
TX3
RX3
RX2
RX1
Analog Devices, Inc., 1997
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
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| ADM1385ARS-REEL7 | 制造商:Analog Devices 功能描述:Dual Transmitter/Receiver RS-232 20-Pin SSOP T/R |
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