LTC4309CDE-TRPBF Просмотр технического описания (PDF) - Linear Technology
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LTC4309CDE-TRPBF
Linear Technology
LTC4309CDE-TRPBF Datasheet PDF : 16 Pages
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LTC4309
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, VCC2 = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
Positive Supply Voltage
VCC2
Input Side Accelerator Supply Voltage
ICC
VCC Input Supply Current Enabled
ISD
VCC Input Supply Current Disabled
ICC2
VCC2 Input Supply Current Enabled
ISD2
VCC2 Input Supply Current Disabled
Propagation Delay and Rise Time Accelerators
VCC = VCC2 = 5.5V, VSDAIN = VSCLIN = 0V (Note 2)
VCC = VCC2 = 5.5V, SDA = SCL = 5.5V, ENABLE = OV
VCC = VCC2 = 5.5V, VSDAIN = VSCLIN = 0V (Note 2)
VCC = VCC2 = 5.5V, SDA = SCL = 5.5V, ENABLE = OV
l 2.3
5.5
V
l 1.8
5.5
V
l
7 11 mA
l
900 1400 μA
l
190 250 μA
l
140 180 μA
tPHL
SDA/SCL Propagation Delay High to Low
tPLH
SDA/SCL Propagation Delay Low to High
tRISE
SDA/SCL Rise Time
tFALL
SDA/SCL Fall Time
IPULLUPAC
Transient Boosted Pull-up Current
Start-Up Circuitry
CLOAD = 50pF, 2.7k to VCC on SDA, SCL, (Note 3, 4), (Figure 1)
CLOAD = 50pF, 2.7k to VCC on SDA, SCL, (Note 3, 4), (Figure 1)
CLOAD = 100pF, 10k to VCC on SDA, SCL, VCC = 5V VCC2 = 5V,
(Note 3, 5), (Figure 1)
CLOAD = 100pF, 10k to VCC on SDA, SCL, VCC = 5V (Note 3, 5),
(Figure 1)
Positive Transition > 0.8V/μS on SDA, SCL, VCC = 3.3V (Note 7)
85
ns
10
ns
30 300 ns
30 300 ns
58
mA
VPRE
Precharge Voltage
tIDLE
Bus Idle Time
VTHR_EN
ENABLE Threshold Voltage
VTHR_EN(HYST) ENABLE Threshold Voltage Hysteresis
VTHR_CTRL ACC, DISCEN Threshold Voltage
ICTRL
ENABLE, ACC, DISCEN Input Currents
tPLH_EN
ENABLE Delay Off-On
tPHL_EN
ENABLE Delay On-Off
SDA, SCL Open
ENABLE Rising Edge
(Note 3)
ENABLE, ACC, DISCEN from 0 to VCC
(Figure 1)
(Note 3), (Figure 1)
l 0.8 1.0 1.2
V
l 55 95 175 μs
l 0.8 1.4 2
V
100
mV
0.5 0.7 1
V
l
0.1 ±5 μA
95
μs
10
ns
tPLH_READY READY Delay On-Off
tPHL_READY READY Delay Off-On
VOL_READY READY Output Low Voltage
IOFF_READY READY Off Leakage Current
Timing Characteristics
fI2C, MAX
I2C Maximum Operating Frequency
tBUF
Bus Free Time Between Stop and Start
Condition
(Note 3), (Figure 1)
(Note 3), (Figure 1)
IREADY = 3mA, VCC = 2.3V
VCC = READY = 5.5V
(Note 3)
(Note 3)
10
ns
10
ns
l
0.4
V
l
0.1 ±5 μA
400 600
kHz
1.3 μs
tHD, STA
tSU, STA
tSU, STO
Hold Time After (Repeated)
Start Condition
Repeated Start Condition Set-Up Time
Stop Condition Set-Up Time
(Note 3)
(Note 3)
(Note 3)
100 ns
0
ns
0
ns
tHD, DATI
Data Hold Time Input
tSU, DAT
Data Set-Up Time
Input-Output Connection
(Note 3)
(Note 3)
0
ns
100 ns
VOS
Input-Output Offset Voltage
2.7k to VCC2 on SDA, SCL, Driven SDA, SCL = 0.2V
l 20 60 100 mV
VTHR
SDA, SCL Logic Input Threshold Voltage VCC ≥ 2.9V
VCC < 2.9V
1.4 1.65 1.9
V
1.1 1.35 1.6
V
4309fa
3
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