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DS89C387TMEA Datasheet

  • DS89C387TMEA

  • Twelve Channel CMOS Differential Line Driver

  • 10頁

  • NSC

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DS89C387 Twelve Channel CMOS Differential Line Driver
May 1995
DS89C387
Twelve Channel CMOS Differential Line Driver
General Description
The DS89C387 is a high speed twelve channel CMOS differ-
ential driver that meets the requirements of TIA/EIA-422-B.
The DS89C387 features a low I
CC
specification of 1.5 mA
maximum, which makes it ideal for battery powered and
power conscious applications. The device replaces three
DS34C87s and offers a PC board space savings up to 30%.
The twelve channel driver is available in a SSOP package.
The device is ideal for wide parallel bus applications.
Each TRI-STATE
廬
enable (EN) allows the driver outputs to
be active or in a HI-impedance off state. Each enable is com-
mon to only two drivers for flexibility and control. The drivers
may be disabled to turn off load current and to save power
when data is not being transmitted.
The driver鈥檚 input (DI) is compatible with both TTL and
CMOS signal levels.
Features
n
Low power I
CC
: 1.5 mA maximum
n
Meets TIA/EIA-422-B (RS-422)
n
Guaranteed AC parameters:
鈥?Maximum driver skew 鈭? ns
鈥?Maximum transition time 鈭?0 ns
n
Available in SSOP packaging:
鈥?Requires 30% less PCB space than 3 DS34C87TMs
Connection Diagram
48L SSOP
DS89C387
Functional Diagram
DS012086-2
1/6 of package
Truth Table
Enable
EN
L
H
H
Input
DI
X
H
L
DO
Z
H
L
Outputs
DO
*
Z
L
H
DS012086-1
Order Number DS89C387TMEA
See NS Package Number MS48A
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 1998 National Semiconductor Corporation
DS012086
www.national.com

DS89C387TMEA 產(chǎn)品屬性

  • National Semiconductor (TI)

  • Tube

  • 29

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