DS96F172M/DS96F174C/DS96F174M
EIA-485/EIA-422Quad Differential Drivers
General Description
The DS96F172and the DS96F174are high speed quad differential line drivers designed to meet EIA-485Standards.The DS96F172and the DS96F174offer improved perfor-mance due to the u of L-FAST bipolar technology.The u of LFAST technology allows the DS96F172and DS96F174to operate at higher speeds while minimizing power con-sumption.
The DS96F172and the DS96F174have TRI-STATE ®out-puts and are optimized for balanced multip
千瓦时和焦耳怎么换算
oint data bus transmission at rates up to 15Mbps.The drivers have wide positive and negative common mode range for multipoint applications 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 DS96F172features an active high and active low Enable,common to all four drivers.The DS96F174features parate active high Enables for each driver pair.
Features
n Meets EIA-485and EIA-422standards 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
DS96F172and DS96F174are lead and function compatible with the SN75172/174or 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
00962514
梦中人歌词
DS96F174
00962515
Function Tables
(Each Driver)
DS96F172Input Enable Outputs A E E Y Z H H X H L L H X L H H X L H L L
X L L H X
L
H Z
Z
DS96F174经验思维
Input Enable Outputs
A E Y Z H H H L L H L H X
L
Z
Z
H =High Level L =Low Level X =Don’t Care
Z =High Impedance (Off)
TRI-STATE ®is a registered trademark of National Semiconductor Corporation.
July 2000
DS96F172M/DS96F174C/DS96F174M EIA-485/EIA-422Quad Differential Drivers
©2004National Semiconductor Corporation
Absolute Maximum Ratings COMMERCIAL (Note 2)
Specifications for the 883version of this product are listed parately on the following pages.Storage Temperature Range (T STG )−65˚C to +175˚C
Lead Temperature (Soldering,60c.)
300˚C Maximum Package Power Dissipation (Note 1)at 25˚C
Ceramic DIP (J)1500mW
Supply Voltage 7.0V Enable Input Voltage
5.5V
Recommended Operating Conditions
Min Typ Max Units
Supply Voltage (V CC )DS96F174C 4.75 5.0 5.25V Common Mode −7.0
+12.0
V
Output Voltage (V OC )Output Current HIGH (I OH )
−60mA Output Current LOW (I OL )
60
mA
Operating Temperature (T A )
DS96F174C
+70
˚C
Note 1:Derate “J”package 10mW/˚C above 25˚C.
Electrical Characteristics (Notes 3,4)
Over recommended supply voltage and operating temperature range,unless otherwi specified Symbol Parameter
Conditions
Min Typ Max Units
(Note 2)
V IH Input Voltage HIGH 2.0
教师博览V V IL Input Voltage LOW T A =0˚C to +70˚C 0.8V T A =−55˚C to +125˚C 0.7
V OH Output Voltage HIGH I OH =−33mA T A =0˚C to +70˚C 3.0
V V OL Output Voltage LOW I OL =33mA T A =0˚C to +70˚C
2.0V V IC Input Clamp Voltage I I =−18mA −1.5V |V OD1|Differential Output Voltage I O =0mA
6.0
V |V OD2|
Differential Output Voltage
R L =54Ω,Figure 1T A =−55˚C
1.2
2.0V
1.5R L =100Ω,Figure 1
2.0 2.3
V OD Differential Output Voltage
Figure 2
T A =0˚C to +70˚C 1.0
V
∆|V OD |Change in Magnitude of Differential R L =54Ωor 100Ω,−40˚C to +125˚C ±0.2V Output Voltage (Note 5)Figure 1
−55˚C to +125˚C ±0.4
V OC Common Mode Output Voltage (Note 6)
R L =54Ωor 100Ω,Figure 1 3.0
V ∆|V OC |Change in Magnitude of Common R L =54Ωor 100Ω,Figure 1
±0.2V Mode Output Voltage (Note 5)I O Output Current with Power Off V CC =0V,V O =−7.0V to +12V ±50µA I OZ High Impedance State Output Current
V O =−7.0V to +12V ±20
±50
µA I IH Input Current HIGH V I =2.4V 20µA I IL Input Current LOW
V I =0.4V −50µA I OS
Short Circuit Output Current V O =−7.0V −250(Note 7)
V O =0V −150mA
V O =V CC 150V O =+12V
250I CC Supply Current (All Drivers)
No Load
Outputs Enabled 50mA
I CCX
Outputs Disabled清蒸膏蟹
30
D S 96F 172M /D S 96F 174C /D S 96F 174M
2
COMMERCIAL
Switching Characteristics
V CC=5.0V,T A=25˚C
Symbol Parameter Conditions Min Typ Max Units t DD Differential Output Delay Time R L=60Ω,Figure31520ns t TD Differential Output Transition Time1522ns t PLH Propagation Delay Time,R L=27Ω,Figure41216ns Low-to-High Level Output
t PHL Propagation Delay Time,1216ns High-to-Low Level Output
t ZH Output Enable Time to High Level R L=110Ω,FIgure42532ns t ZL Output Enable Time to Low Level R L=110Ω,Figure62532ns t HZ Output Disable Time from High Level R L=110Ω,Figure52530ns t LZ Output Disable Time from Low Level R L=110Ω,Figure62025ns t LZL Output Disable Time from Low Level Figure6300ns with Load Resistor to GND(Note8)
t SKEW Driver Output to Output R L=60Ω 1.0 4.0ns Note2:“Absolute Maximum Ratings”are tho values beyond which the safety of the device cannot be guaranteed.They are not meant to imply that the devices should be operated at the limits.The tables of“Electrical Characteristics”provide conditions for actual device operation.
Note3:Unless otherwi specified min/max limits apply across the0˚C to+70˚C range for the DS96F174C.All typicals are given for V CC=5V and T A=25˚C. Note4:All currents into the device pins are positive;all currents out of the device pins are negative.All voltages are reference to ground unless otherwi specified. Note5:∆|V OD|and∆|V OC|are the changes in magnitude of V OD and V OC respectively,that occur when the input is changed from a high level to a low level. Note6:In EIA-422A and EIA-485standards,V OC,which is the average of the two output voltages with respect to ground,is called output offt voltage,V OS. Note7:Only one output at a time should be shorted.
Note8:For more information e Application Bulletin,contact Product Marketing.
Order Number:DS96F174CJ
DS96F174CN
NS Package Number J16A or N16E
DS96F172M/DS96F174C/DS96F174M
3
MIL-STD-883C
Absolute Maximum Ratings (Note 2)漫画头像
For complete Military Specifications,refer to the appro-priate SMD or MDS.
Storage Temperature Range (T STG )−65˚C to +175˚C
Lead Temperature (Soldering,60c.)300˚C Maximum Package Power Dissipation (Note 9)at 25˚C
Ceramic LCC (E)2000mW Ceramic DIP (J)1800mW Ceramic Flatpak (W)1000mW
Supply Voltage 7.0V Enable Input Voltage
5.5V
Recommended Operating Conditions
Min Typ
Max
Units
Supply Voltage (V CC )DS96F172M/DS96F174M 4.50 5.0
5.50V Common Mode −7.0
+12.0
V
Output Voltage (V OC )Output Current HIGH (I OH )−60mA Output Current LOW (I OL )60
mA
Operating Temperature (T A )DS96F172M/DS96F174M
−55
+125Note 9:Above T A =25˚C,derate “E”package 13.4,“J”package 12.5,“W”package 7.1mW/˚C
Electrical Characteristics (Notes 3,4)
Over recommended supply voltage and operating temperature range unless otherwi specified Symbol Parameter
Conditions
Min Max
Units V IH Input Voltage HIGH 2.0
V V IL Input Voltage LOW T A =25˚C
0.8V T A =−55˚C,or +125˚C
0.7V IC Input Clamp Voltage I I =−18mA −1.5V |V OD1|Differential Output Voltage I O =0mA
6.0V
|V OD2|
Differential Output Voltage
R L =54Ω,V CC =4.5V T A =−55˚C
1.2Figure 1
T A =25˚C,or +125˚C 1.5V
R L =100Ω,V CC =4.5V,Figure 1
2.0
∆|V OD |Change in Magnitude of Differential R L =54Ωor 100Ω,T A =25˚C,or +125˚C ±0.2V Output Voltage (Note 5)V CC =4.5V,Figure 1
T A =−55˚C
±0.4
V V OC Common Mode Output Voltage (Note 6)
R L =54Ωor 100Ω,Figure 1
3.0
V ∆|V OC |Change in Magnitude of Common R L =54Ωor 100Ω,V CC =4.5V,Figure 1
±0.2V Mode Output Voltage (Note 5)I O Output Current with Power Off V CC =0V,V O =−7.0V to +12V ±50µA I OZ High Impedance State Output Current V O =−7.0V to +12V ±50
µA I IH Input Current HIGH V I =2.4V 20µA I IL Input Current LOW
xiangmuV I =0.4V −50µA I OS
Short Circuit Output Current V O =−7.0V −250(Note 7)
V O =0V −150mA
V O =V CC 150V O =+12V
250I CC Supply Current (All Drivers)
No Load
Outputs Enabled 50mA
I CCX
Outputs Disabled
30
D S 96F 172M /D S 96F 174C /D S 96F 174M
4
MIL-STD-883C
Switching Characteristics
V CC =5.0V Symbol Parameter
Conditions T A =25˚C T A =55˚C T A =125˚C
Units
Typ Max Max Max t DD Differential Output Delay Time R L =60Ω,C L =15pF,15223030ns t TD Differential Output Transition Time Figure 3文档图片
15224040ns t PLH Propagation Delay Time,R L =27Ω,C L =15pF,12
16
25
25
ns Low-to-High Level Output Figure 4
t PHL Propagation Delay Time,12
16
25
25
ns
High-to-Low Level Output t ZH Output Enable Time to High Level R L =110Ω,Figure 525324040ns t ZL Output Enable Time to Low Level R L =110Ω,Figure 62535100100ns t HZ Output Disable Time from High Level R L =110Ω,Figure 5,25
30
80
80
ns
Note 13
t LZ Output Disable Time from Low Level R L =110Ω,Figure 62025
40
40
ns t LZL Output Disable Time from Low Level Figure 6
300
ns
with Load Resistor to GND (Note 12)t SKEW
Driver Output to Output
R L =60Ω
1.0
4.0
10
10
ns
SMD Numbers:DS96F172MJ/8835962-9076501MEA
DS96F174MJ/8835962-9076502MEA
DS96F172ME/8835962-9076501M2A DS96F174MW/8835962-9076502MFA DS96F174ME/8835962-9076502M2A
Order Number:DS96F172MJ/883,DS96F174MJ/883
NS Package Number J16A
DS96F172ME/883,DS96F174ME/883NS Package Number E20A
DS96F172MW-MIL,DS96F174MW/883NS Package Number W16A
For Complete Military Product Specifi-cations,refer to the appropriate SMD or MDS.
Parameter Measurement Information
00962503
FIGURE 1.Differential and Common
Mode Output Voltage
00962513
FIGURE 2.Differential Output Voltage with
Varying Common Mode Voltage
00962504
00962505
FIGURE 3.Differential Output Delay and Transition Times
DS96F172M/DS96F174C/DS96F174M
5
