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PDF DS96F174CN Data sheet ( Hoja de datos )
| Número de pieza | DS96F174CN | |
| Descripción | Quad Differential Drivers | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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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® 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 −7.0V 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 Meets EIA-485 and EIA-422 standards
n Monotonic differential output switching
n TRI-STATE outputs
n Designed for multipoint bus transmission
n Common mode output voltage range: −7.0V to +12V
n Operates from single +5.0V supply
n Reduced power consumption
n Thermal shutdown protection
n DS96F172 and DS96F174 are lead and function
compatible with the SN75172/174 or the
AM26LS31/MC3487
n Military temperature range available
n Qualified for MIL-STD-883C
n Standard military drawings available (SMD)
n Available in DIP (J), LCC (E), and Flatpak (W) packages
Logic Diagrams
DS96F172
DS009625-14
Function Tables (Each Driver)
DS96F172
Input
A
H
L
H
L
X
Enable
EE
HX
HX
XL
XL
LH
Outputs
YZ
HL
LH
HL
LH
ZZ
DS96F174
DS009625-15
DS96F174
Input
A
H
L
X
Enable
E
H
H
L
H = High Level
L = Low Level
X = Don’t Care
Z = High Impedance (Off)
Outputs
YZ
HL
LH
ZZ
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS009625
www.national.com
1 page  
MIL-STD-883C
Switching Characteristics
VCC = 5.0V
Symbol
Parameter
tDD Differential Output Delay Time
tTD Differential Output Transition Time
tPLH Propagation Delay Time,
Low-to-High Level Output
tPHL Propagation Delay Time,
High-to-Low Level Output
tZH Output Enable Time to High Level
tZL Output Enable Time to Low Level
tHZ Output Disable Time from High Level
tLZ
tLZL
tSKEW
Output Disable Time from Low Level
Output Disable Time from Low Level
with Load Resistor to GND (Note 12)
Driver Output to Output
Conditions
RL = 60Ω, CL = 15 pF,
Figure 3
RL = 27Ω, CL = 15 pF,
Figure 4
TA = 25˚C
Typ Max
15 22
15 22
12 16
12 16
TA = 55˚C
Max
30
40
25
25
TA = 125˚C
Max
30
40
25
Units
ns
ns
ns
25 ns
RL = 110Ω, Figure 5
RL = 110Ω, Figure 6
RL = 110Ω, Figure 5,
Note 13
RL = 110Ω, Figure 6
Figure 6
25 32
25 35
25 30
20 25
300
40
100
80
40
40 ns
100 ns
80 ns
40 ns
ns
RL = 60Ω
1.0 4.0
10
10 ns
SMD Numbers: DS96F172MJ/883 5962-9076501MEA
DS96F174MJ/883 5962-9076502MEA
DS96F172ME/883 5962-9076501M2A
DS96F174MW/883 5962-9076502MFA
DS96F174ME/883 5962-9076502M2A
Order Number: DS96F172MJ/883, DS96F174MJ/883
NS Package Number J16A
DS96F172ME/883, DS96F174ME/883
NS Package Number E20A
DS96F172MW-MIL, DS96F174MW/883
NS Package Number W16A
For Complete Military Product Specifications, refer to the appropriate SMD or MDS.
Parameter Measurement Information
DS009625-3
FIGURE 1. Differential and Common
Mode Output Voltage
DS009625-13
FIGURE 2. Differential Output Voltage with
Varying Common Mode Voltage
5 www.national.com
5 Page 
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16-Lead Ceramic Flatpack (W)
Order Number DS96F172MW/883, DS96F174MW/883
NS Package Number W16A
Molded Dual-In-Line Package (N)
Order Number DS96F172CN, or DS96F174CN
NS Package Number N16E
11 www.national.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet DS96F174CN.PDF ] | |
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