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參數(shù)資料
| 型號： | L98SI |
| 廠商： | 意法半導體 |
| 英文描述： | Octal Serial Solenoid Driver(八串行螺線管驅(qū)動器) |
| 中文描述： | 八路系列電磁驅(qū)動器（八串行螺線管驅(qū)動器） |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 77K |
| 代理商： | L98SI |
V
CC
Logicsupplyvoltage - nominally 5V
GROUND
DeviceGround.Thisgroundappliesforthelogiccir-
cuitsas well asthe poweroutputstages.
RESET
Asynchronousresetfortheoutputstages,theparal-
lellatchand the shiftregister insidethe L98SI.This
pinisactivelowanditmustnotbeleftfloating.Apo-
weron clearfunctionmaybe implementedconnec-
ting this pin to V
CC
with an external resistor and to
groundwith an externalcapacitor.
CE
ChipEnable.Datais transferredfromthe shift regi-
sterstotheoutputsontherisingedgeof thissignal.
Thefalling edge of this signal setsthe shiftregister
with the outputvoltage sensebits coming from the
output stages. The output driver for the SO pin is
enabledwhenthis pinis low.
SO
Serial Output.This pin is the serial outputfrom the
shift register and it is tri-stated when CE is high.A
highfor a data biton thispinindicatesthatthe par-
ticularoutputis high. A low on this pinfor a databit
indicatesthat the outputis low.
Comparing the serial output bits with the previous
serial input bits the external microcontroller imple-
mentsthediagnosticdatasupplied by the L98SI.
SI
Serial Input.This pin is the serialdata input.A high
onthispinwillprogramaparticularoutputtobeOFF,
whilea lowwill turn it ON.
SCLK
Serial Clock. This pin clocks the shift register.New
SO datawill appearoneveryrising edgeof thispin
andnewSIdatawillbelatchedoneverySCLK’sfal-
lingedge into the shift register.
OUTPUTS00-07
Poweroutputpins.Theinputandoutputbitscorres-
pondingto 07 aresentandreceivedfirstviatheSPI
busand00is thelast.Theoutputsareprovidedwith
currentlimiting andvoltagesensefunctionsforfault
indicationand protection.Thenominalload current
for theseoutputsis 500mA, but the current limiting
is setto aminimumof1.05A.Theoutputsalsohave
on boardclamps set at about 36V for recirculation
of inductiveload current.
PIN DESCRIPTION
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V
±
5%.T
j
=– 40 to 125
°
C ; unlessotherwise speciifed)
Symbol
V
OC
I
Oleak
R
DSon
Parameter
Test Conditions
Min.
30
Typ.
Max.
40
1
Unit
V
mA
Output Clamping Volt.
Out. Leakage Current
On Resistance
I
O
= 0.5A, Output Programmed OFF
V
O
= 24V, Output Progr. OFF
Output Progr. ON
I
O
= 0.5A
I
O
= 0.8A
I
O
= 1A
With Fault Reset Disabled
Output Progr. ON
0.55
0.55
0.55
1
1
1
I
OL
Out. Self Limiting
Current
Turn-on Delay
1.05
A
t
PHL
I
O
= 500mA
No Reactive Load
I
O
= 500mA
No Reactive Load
Output Progr. OFF
Fault detected if V
O
> V
OREF
See fig. 3
10
μ
s
t
P
Turn-off Delay
10
μ
s
V
OREF
Fault Refer. Voltage
1.6
2
V
t
UD
Fault Reset Delay
(after CE L to H
transition)
Output OFF Voltage
75
250
μ
s
V
OFF
Output Pin Floating.cOutput Progr. OFF,
1.0
V
L98SI
3/9
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