LTC1380 Просмотр технического описания (PDF) - Linear Technology
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LTC1380
Linear Technology
LTC1380 Datasheet PDF : 12 Pages
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LTC1380/LTC1393
ELECTRICAL CHARACTERISTICS (Notes 2, 4)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
VIH
SCL, SDA Input High Voltage
q 1.4
VIL
SCL, SDA Input Low Voltage
q
0.6
VOL
SDA Output Low Voltage
ISDA = 3mA
q
0.4
VAH
Address Input High Voltage
VCC = 5V
q2
VAL
Address Input Low Voltage
VCC = 5V
q
0.8
IIN
SCL, SDA, Address Input Current 0V ≤ VIN ≤ VCC
±1
ICC
Positive Supply Current
VCC = 5V, All Digital Inputs at 5V
q
10
20
IEE
Negative Supply Current
LTC1380: VCC = 5V, VEE = – 5V, All Digital Inputs at 5V q
– 0.1
–5
CS
Input Off Capacitance
(Note 3)
3
CD
Output Off Capacitance
(Note 3) LTC1380
26
LTC1393
18
tON
Switch Turn-On Time from
Stop Condition
tOFF
Switch Turn-Off Time from
Stop Condition
tOPEN
OIRR
Break-Before-Make Interval
Off-Channel Isolation
QINJ
Charge Injection
SMBus Timing (Note 6)
Figure 1 LTC1380: VCC = 5V, VEE = – 5V
LTC1393: VCC = 5V
LTC1380/LTC1393: VCC = 2.7V, VEE = 0V
Figure 1 LTC1380: VCC = 5V, VEE = – 5V
LTC1393: VCC = 5V
LTC1380/LTC1393: VCC = 2.7V, VEE = 0V
tON – tOFF
Figure 2, VS = 200mVP-P, RL = 1k, f = 100kHz (Note 3)
Figure 3, CL = 1000pF (Note 3)
q
q
q
q
q
q
q 75
q
850 1500
850 1500
1130 2000
640 1200
650 1200
670 1200
210
– 65
±1
±20
fSMB
SMBus Operating Frequency
q
100
tBUF
Bus Free Time Between Stop/Start
q 4.7
tHD:STA Hold Time After (Repeated) Start
q 4.0
tSU:STA Repeated Start Setup Time
q 4.7
tSU:STO Stop Condition Setup Time
q 4.0
tHD:DAT Data Hold Time
q 300
tSU:DAT Data Setup Time
q 250
tLOW
Clock Low Period
q 4.7
tHIGH
Clock High Period
q 4.0
tf
SCL/SDA Fall Time
Time Interval Between 0.9VDD and (VILMAX – 0.15)
q
300
tr
SCL/SDA Rise Time
Time Interval Between (VILMAX – 0.15)
q
1000
and (VIHMIN + 0.15)
UNITS
V
V
V
V
V
µA
µA
µA
pF
pF
pF
ns
ns
ns
ns
ns
ns
ns
dB
pC
kHz
µs
µs
µs
µs
ns
ns
µs
µs
ns
ns
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All current into device pins is positive; all current out of device
pins is negative. All voltages are referenced to ground unless otherwise
specified. All typicals are given for TA = 25°C, VCC = 5V (for both LTC1380
and LTC1393) and VEE = – 5V (LTC1380).
Note 3: These typical parameters are based on bench measurements and
are not production tested.
Note 4: Both SCL and SDA assume an external 15k pull-up resistor to a
typical SMBus host power supply VDD of 5V.
Note 5: Typical curves with VEE = – 5V apply to the LTC1380. Curves with
VEE = 0V apply to both the LTC1380 and the LTC1393.
Note 6: These parameters are guaranteed by design and are not tested in
production.
3
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