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DS36C278TN Datasheet

  • DS36C278TN

  • Low Power Multipoint EIA-RS-485 Transceiver

  • 10頁(yè)

  • NSC

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DS36C278 Low Power Multipoint EIA-RS-485 Transceiver
July 1998
DS36C278
Low Power Multipoint EIA-RS-485 Transceiver
General Description
The DS36C278 is a low power differential bus/line trans-
ceiver designed to meet the requirements of RS-485 stan-
dard for multipoint data transmission. In addition it is compat-
ible with TIA/EIA-422-B.
The CMOS design offers significant power savings over its
bipolar and ALS counterparts without sacrificing ruggedness
against ESD damage. The device is ideal for use in battery
powered or power conscious applications. I
CC
is specified at
500 碌A(chǔ) maximum.
The driver and receiver outputs feature TRI-STATE
廬
capabil-
ity. The driver outputs operate over the entire common mode
range of 鈭?V to +12V. Bus contention or fault situations that
cause excessive power dissipation within the device are
handled by a thermal shutdown circuit, which forces the
driver outputs into the high impedance state.
The receiver incorporates a fail safe circuit which guarantees
a high output state when the inputs are left open. (Note 1)
The DS36C278T is fully specified over the industrial tem-
perature range (鈭?0藲C to +85藲C).
Features
n
100% RS-485 compliant
鈥?Guaranteed RS-485 device interoperation
n
Low power CMOS design: I
CC
500 碌A(chǔ) max
n
Built-in power up/down glitch-free circuitry
鈥?Permits live transceiver insertion/displacement
n
DIP and SOIC packages available
n
Industrial temperature range: 鈭?0藲C to +85藲C
n
On-board thermal shutdown circuitry
鈥?Prevents damage to the device in the event of
excessive power dissipation
n
Wide common mode range: 鈭?V to +12V
n
Receiver open input fail-safe (Note 1)
n
1
鈦?/div>
4
unit load (DS36C278):
鈮?28
nodes
n
1
鈦?/div>
2
unit load (DS36C278T):
鈮?4
nodes
n
ESD (human body model):
鈮?
kV
n
Drop in replacement for:
鈥?LTC485, MAX485, DS75176, DS3695
Connection and Logic Diagram
Truth Table
DRIVER SECTION
RE*
X
X
X
RE*
DE
H
H
L
DE
L
L
L
L
DI
H
L
X
RI-RI*
鈮?0.2V
鈮も垝0.2V
X
OPEN (Note 1)
DO/RI
H
L
Z
DO*/RI*
L
H
Z
RO
H
L
Z
H
RECEIVER SECTION
DS012040-1
L
L
H
L
Order Number DS36C278TM, DS36C278TN,
DS36C278M, DS36C278N
See NS Package Number M08A or N08E
Note 1:
Non-terminated, open input only
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 1999 National Semiconductor Corporation
DS012040
www.national.com

DS36C278TN 產(chǎn)品屬性

  • 40

  • 集成電路 (IC)

  • 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器

  • -

  • 收發(fā)器

  • 1/1

  • RS485

  • 4.75 V ~ 5.25 V

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-MDIP

  • 管件

  • *DS36C278TN

DS36C278TN相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    The DS3600 is a secure supervisor with 64 bytes of SRAM for ...
    Maxim Integrate...
  • 英文版
    The DS3605 is the integration of a nonvolatile (NV) SRAM con...
    Maxim Integrate...
  • 英文版
    Octal TRI-STATE MOS Drivers
    NSC
  • 英文版
    Octal TRI-STATE MOS Drivers
    NSC [Natio...
  • 英文版
    ETC
  • 英文版
    CMOS Dual Peripheral Drivers
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC [Natio...
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC [Natio...
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC
  • 英文版
    CMOS Dual Peripheral Drivers
    NSC [Natio...
  • 英文版
    The DS3641 is a secure supervisor with 1,024 bytes of SRAM f...
    Maxim Integrate...
  • 英文版
    The DS3644 is a highly integrated, encryption-key supervisor...
    Maxim Integrate...
  • 英文版
    No description available.
    Maxim Integrate...
  • 英文版
    TRI-STATE TTL to MOS Multiplexers/Drivers
    NSC
  • 英文版
    TRI-STATE TTL to MOS Multiplexers/Drivers
    NSC [Natio...
  • 英文版
    ETC
  • 英文版
  • 英文版
    Quad Differential Line Receivers
    NSC

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