LTC4305CDHD datasheet(3/20 Pages) LINER

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LTC4305

4305f

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full specified temperature

range, otherwise specifications are at TA = 25°C. VCC = 3.3V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply/Start-Up

VTH EN

ENABLE Falling Threshold Voltage

●

0.8

1.0

1.2

VEN HYST

ENABLE Threshold Hysteresis Voltage

tPHL EN

ENABLE Delay, On-Off

tPLH EN

ENABLE Delay, Off-On

IIN EN

ENABLE Input Leakage Current

VENABLE = 0V, 5.5V, VCC = 5.5V

●

0.1

±1

µA

VLOW READY

READY Pin Logic Low Output Voltage

IPULL-UP = 3mA, VCC = 2.7V

●

0.18

0.4

IOFF READY

READY Off State Input Leakage Current

VREADY = 0V, 5.5V, VCC = 5.5V

●

±1

µA

ALERT

VALERT(OL)

ALERT Output Low Voltage

IALERT = 3mA, VCC = 2.7V

●

0.2

0.4

IOFF, ALERT

ALERT Off State Input Leakage Current

VALERT = 0V, 5.5V

●

±1

µA

IIN, ALERT1–2

ALERT1–ALERT2 Input Current

VALERT1–2 = 0V, 5.5V

●

±1

µA

VALERT1–2(IN)

ALERT1–ALERT2 Pin Input Falling

0.8

1.0

1.2

Threshold Voltages

●

VALERT1–2(HY)

ALERT1–ALERT2 Pin Input Threshold

Hysteresis Voltages

Rise Time Accelerators

VSDA,SCL slew

Initial Slew Requirement to Activate

SDAIN, SCLIN, SDA1–2,

0.4

0.8

µs

Rise Time Accelerator Currents

SCL1–2 Pins

●

VRISE,DC

Rise Time Accelerator DC Threshold Voltage

SDAIN, SCLIN, SDA1–2,

0.7

0.8

SCL1–2 Pins

●

IBOOST

Rise Time Accelerator Pull-Up Current

SDAIN, SCLIN, SDA1–2,

5.5

SCL1–2 Pins (Note 3)

Stuck Low Timeout Circuitry

VTIMER(L)

Stuck Low Falling Threshold Voltage

VCC = 2.7V, 5.5V

●

0.4

0.52

0.64

VTIMER(HYST)

Stuck Low Threshold Hysteresis Voltage

TTIMER1

Timeout Time #1

TIMSET1,0 = 01

●

TTIMER2

Timeout Time #2

TIMSET1,0 = 10

●

12.5

17.5

TTIMER3

Timeout Time #3

TIMSET1,0 = 11

●

6.25

7.5

8.75

Upstream-Downstream Buffers

VOS,BUF

Buffer Offset Voltage

RBUS = 10k, VCC = 2.7V, 5.5V (Note 4) ●

100

VOS,UP-BUF

Upstream Buffer Offset Voltage

VCC = 2.7V, RBUS = 2.7k (Note 4)

●

120

VIN,BUFFER = 0V

VCC = 5.5V, RBUS = 2.7k (Note 4)

●

110

150

VOS,DOWN-BUF

Downstream Buffer Offset Voltage

VCC = 2.7V, RBUS = 2.7k (Note 4)

●

110

160

VIN,BUFFER = 0V

VCC = 5.5V, RBUS = 2.7k (Note 4)

●

140

200

VOL

Output Low Voltage, VIN,BUFFER = 0V

SDA, SCL Pins; ISINK = 4mA,

●

400

VCC = 3V, 5.5V

VOL

Output Low Voltage, VIN,BUFFER = 0.2V

SDA, SCL Pins; ISINK = 500µA,

●

320

VCC = 2.7V, 5.5V

VIL,MAX

Buffer Input Logic Low Voltage

VCC = 2.7V, 5.5V

●

0.4

0.52

0.64

VTHSDA,SCL

Downstream SDA, SCL Logic Threshold Voltage

●

0.8

1.0

1.2

ILEAK

Input Leakage Current

SDA, SCL Pins;

●

±5

µA

VCC = 0 to 5.5V;

Buffers Inactive

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