参数资料
型号: LTC1323CS
厂商: LINEAR TECHNOLOGY CORP
元件分类: 通用总线功能
英文描述: Single 5V AppleTalk Transceiver
中文描述: LINE TRANSCEIVER, PDSO16
封装: 0.150 INCH, PLASTIC, SO-16
文件页数: 1/12页
文件大小: 284K
代理商: LTC1323CS
1
LTC1323
Single 5V
AppleTalk
Transceiver
DX
CHARGE PUMP
DX
RX
RX
RX
0.33
μ
F
CPEN
TXD
TXI
TXDEN
SHDN
RXEN
RXO
RXO
RXDO
3
2
1
4
5
6
7
8
9
10
11
12
TXD
TXD
+
TXO
RXI
RXI
RXD
+
RXD
24
21
23
22
20
19
18
17
5
TO 10
=
5
TO 10
16
14
15
13
LTC1323 TA01
0.33
μ
F
100pF
1
μ
F
1
μ
F
5V
LTC1323
8
7
6
5
4
2
1
3
EMI FILTER
EMI FILTER
EMI FILTER
EMI FILTER
EMI FILTER
EMI FILTER
EMI FILTER
EMI FILTER
+
+
S
FEATURE
D
The LTC
1323 is a multi-protocol line transceiver designed
to operate on AppleTalk or EIA562-compatible single-
ended networks while operating from a single 5V supply.
There are two versions of the LTC1323 available: a 16-pin
version designed to connect to an AppleTalk network,
and a 24-pin version which also includes the additional
single-ended drivers and receivers necessary to create
an Apple-compatible serial port. An on-board charge
pump generates a –5V supply which can be used to
power external devices. Additionally, the 24-pin LTC1323
features a micropower keep-alive mode during which
one of the single-ended receivers is kept active to monitor
external wake-up signals. The LTC1323 draws only 2.4mA
quiescent current when active, 65
μ
A in receiver keep-
alive mode, and 0.5
μ
A in shutdown, making it ideal for
use in battery-powered systems.
The differential driver can drive either differential AppleTalk
loads or conventional single-ended loads. The driver
outputs three-state when disabled, during shutdown, in
receiver keep-alive mode, or when the power is off. The
driver outputs will maintain high impedance even with
output common-mode voltages beyond the power supply
rails. Both the driver outputs and receiver inputs are
protected against ESD damage to
±
10kV.
U
ESCRIPTIO
I
Single Chip Provides Complete
LocalTalk
/AppleTalk Port
I
Operates From a Single 5V Supply
I
ESD Protection to
±
10kV on Receiver Inputs
and Driver Outputs
I
Low Power: I
CC
= 2.4mA Typ
I
Shutdown Pin Reduces I
CC
to 0.5
μ
A Typ
I
Receiver Keep-Alive Function: I
CC
= 65
μ
A Typ
I
Differential Driver Drives Either Differential
AppleTalk or Single-Ended EIA562 Loads
I
Drivers Maintain High Impedance in Three-State or
with Power Off
I
Thermal Shutdown Protection
I
Drivers are Short-Circuit Protected
U
S
A
O
PPLICATI
I
LocalTalk Peripherals
I
Notebook/Palmtop Computers
I
Battery-Powered Systems
U
A
O
PPLICATI
TYPICAL
AppleTalk and LocalTalk are registered trademarks of Apple Computer, Inc.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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