DS96F172 반도체 회로 부품 판매점
Quad Differential Drivers
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 National Semiconductor |
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
COMMERCIAL
Absolute Maximum Ratings (Note 2)
Specifications for the 883 version of this product are
listed separately on the following pages.
Storage Temperature Range (TSTG)
Lead Temperature (Soldering, 60 sec.)
−65˚C to +175˚C
300˚C
Maximum Package Power Dissipation (Note 1) at 25˚C
Ceramic DIP (J)
1500 mW
Supply Voltage
7.0V
Enable Input Voltage
5.5V
Recommended Operating
Conditions
Min Typ
Supply Voltage (VCC)
DS96F172C/DS96F174C 4.75 5.0
Common Mode
−7.0
Output Voltage (VOC)
Output Current HIGH (IOH)
Output Current LOW (IOL)
Operating Temperature
(TA)
DS96F172C/DS96F174C
0
Note 1: Derate “J” package 10 mW/˚C above 25˚C.
Max
5.25
+12.0
−60
60
+70
Units
V
V
mA
mA
˚C
Electrical Characteristics (Notes 3, 4)
Over recommended supply voltage and operating temperature range, unless otherwise specified
Symbol
Parameter
Conditions
Min
VIH Input Voltage HIGH
VIL Input Voltage LOW
VOH
VOL
VIC
|VOD1|
|VOD2|
Output Voltage HIGH
Output Voltage LOW
Input Clamp Voltage
Differential Output Voltage
Differential Output Voltage
VOD
∆|VOD|
VOC
∆|VOC|
IO
IOZ
IIH
IIL
IOS
Differential Output Voltage
Change in Magnitude of Differential
Output Voltage (Note 5)
Common Mode Output Voltage
(Note 6)
Change in Magnitude of Common
Mode Output Voltage (Note 5)
Output Current with Power Off
High Impedance State Output
Current
Input Current HIGH
Input Current LOW
Short Circuit Output Current
(Note 7)
ICC
ICCX
Supply Current (All Drivers)
IOH = −33 mA
IOL = 33 mA
II = −18 mA
IO = 0 mA
RL = 54Ω, Figure 1
TA = 0˚C to +70˚C
TA = −55˚C to +125˚C
TA = 0˚C to +70˚C
TA = 0˚C to +70˚C
TA = −55˚C
RL = 100Ω, Figure 1
Figure 2
RL = 54Ω or 100Ω,
Figure 1
TA = 0˚C to +70˚C
−40˚C to +125˚C
−55˚C to +125˚C
RL = 54Ω or 100Ω, Figure 1
RL = 54Ω or 100Ω, Figure 1
VCC = 0V, VO = −7.0V to +12V
VO = −7.0V to +12V
VI = 2.4V
VI = 0.4V
VO = −7.0V
VO = 0V
VO = VCC
VO = +12V
No Load
Outputs Enabled
Outputs Disabled
2.0
3.0
1.2
1.5
2.0
1.0
Typ
(Note 2)
2.0
Max Units
V
0.8 V
0.7
V
2.0 V
−1.5 V
6.0 V
V
2.3
V
±0.2 V
±0.4 V
3.0 V
±0.2 V
±50 µA
±20 ±50 µA
20
−50
−250
−150
150
250
50
30
µA
µA
mA
mA
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