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DS96F174MW/883 Datasheet

  • DS96F174MW/883

  • Quad Differential Drivers

  • 12頁

  • NSC

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DS96F172C/DS96F172M/DS96F174C/DS96F174M EIA-485/EIA-422 Quad Differential Drivers
June 1998
DS96F172C/DS96F172M/DS96F174C/DS96F174M
EIA-485/EIA-422 Quad Differential Drivers
General Description
The DS96F172 and the DS96F174 are high speed quad dif-
ferential line drivers designed to meet EIA-485 Standards.
The DS96F172 and the DS96F174 offer improved perfor-
mance due to the use of L-FAST bipolar technology. The use
of LFAST technology allows the DS96F172 and DS96F174
to operate at higher speeds while minimizing power con-
sumption.
The DS96F172 and the DS96F174 have TRI-STATE
廬
out-
puts and are optimized for balanced multipoint data bus
transmission at rates up to 15 Mbps. The drivers have wide
positive and negative common mode range for multipoint ap-
plications in noisy environments. Positive and negative
current-limiting is provided which protects the drivers from
line fault conditions over a +12V to 鈭?.0V common mode
range. A thermal shutdown feature is also provided. The
DS96F172 features an active high and active low Enable,
common to all four drivers. The DS96F174 features separate
active high Enables for each driver pair.
Features
n
n
n
n
n
n
n
n
n
Meets EIA-485 and EIA-422 standards
Monotonic differential output switching
TRI-STATE outputs
Designed for multipoint bus transmission
Common mode output voltage range: 鈭?.0V to +12V
Operates from single +5.0V supply
Reduced power consumption
Thermal shutdown protection
DS96F172 and DS96F174 are lead and function
compatible with the SN75172/174 or the
AM26LS31/MC3487
Military temperature range available
Qualified for MIL-STD-883C
Standard military drawings available (SMD)
Available in DIP (J), LCC (E), and Flatpak (W) packages
n
n
n
n
Logic Diagrams
DS96F172
Function Tables
DS96F172
Input
A
H
L
H
L
DS009625-14
(Each Driver)
Enable
E
H
H
X
X
L
E
X
X
L
L
H
Y
H
L
H
L
Z
Outputs
Z
L
H
L
H
Z
X
DS96F174
DS96F174
Input
A
H
L
X
H = High Level
L = Low Level
X = Don鈥檛 Care
Z = High Impedance (Off)
Enable
E
H
H
L
Y
H
L
Z
Outputs
Z
L
H
Z
DS009625-15
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
漏 1998 National Semiconductor Corporation
DS009625
www.national.com

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