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DS34F86 Schematic ( PDF Datasheet ) - National Semiconductor

Teilenummer DS34F86
Beschreibung (DS34F86 / DS35F86) RS-422/RS-423 Quad Line Receiver
Hersteller National Semiconductor
Logo National Semiconductor Logo 




Gesamt 6 Seiten
DS34F86 Datasheet, Funktion
February 1996
DS34F86/DS35F86
RS-422/RS-423 Quad Line Receiver with TRI-STATE®
Outputs
General Description
The DS34F86/DS35F86 RS-422/3 Quad Receiver features
four independent receivers, which comply with EIA Stan-
dards for the electrical characteristics of balanced/
unbalanced voltage digital interface circuits. Receiver out-
puts are 74LS compatible TRI-STATE structures which are
forced to a high impedance state when the appropriate out-
put control lead reaches a logic zero condition. A PNP device
buffers each output control lead to assure minimum loading
for either logic one or logic zero inputs. In addition each re-
ceiver has internal hysteresis circuitry to improve noise mar-
gin and discourage output instability for slowly changing in-
put waveforms.
The DS34F86/DS35F86 offers improved performance due to
the use of state-of-the-art L-FAST bipolar technology. The
L-FAST technology allows for higher speeds and lower cur-
rents by utilizing extremely short gate delay times. Thus, the
DS34F86/DS35F86 features lower power, extended tem-
perature range, and improved specifications.
The DS34F86/DS35F86 offers optimum performance when
used with the DS34F87/DS35F87 Quad Line Driver.
Features
n Military temperature range
n TRI-STATE outputs
n Fast propagation times (15 ns typical)
n TTL compatible
n 5.0V supply
n Lead compatible and interchangeable with MC3486 and
DS3486
Connection Diagram
16-Lead DIP
DS009616-1
Top View
Order Number DS34F86J or DS35F86J
See NS Package Number J16A
FIGURE 1. Block Diagram
Function Table
(Each Receiver)
Differential Inputs
VID = (VIN+) − (VIN−)
VID 0.2V
VID −0.2V
X
Note 1: H = High Level
Note 2: L = Low Level
Note 3: Z = High Impedance (off)
Enable
E
H
H
L
DS009616-2
Output
OUT
H
L
Z
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1997 National Semiconductor Corporation DS009616
www.national.com
1
PrintDate=1997/04/25 PrintTime=10:08:01 5859 ds009616 Rev. No. 1 Proof
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DS34F86 Datasheet, Funktion
Physical Dimensions inches (millimeters)
Ceramic Dual-In-Line Package (J)
Order Number DS34F86J or DS35F86J
NS Package Number J16A
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VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI-
CONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or sys- 2. A critical component in any component of a life support
tems which, (a) are intended for surgical implant into
device or system whose failure to perform can be rea-
the body, or (b) support or sustain life, and whose fail-
sonably expected to cause the failure of the life support
ure to perform when properly used in accordance
device or system, or to affect its safety or effectiveness.
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
PrintDate=1997/04/25 PrintTime=10:08:17 5859 ds009616 Rev. No. 1 Proof
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