Datasheet LTC4311 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | Low Voltage I2C/SMBus Accelerator |
| Páginas / Página | 12 / 3 — ELECTRICAL CHARACTERISTICS. • The. denotes the specifi cations which apply … |
| Formato / tamaño de archivo | PDF / 142 Kb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. • The. denotes the specifi cations which apply over the full operating
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LTC4311
ELECTRICAL CHARACTERISTICS • The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VCC = 3.3V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Positive Supply Voltage ● 1.6 5.5 V ICC Supply Current VCC = 5.5V, ENABLE = 5.5V, VBUS1 = VBUS2 = 0V ● 200 300 μA ICC_STANDBY Supply Current, Standby Mode VCC = 5.5V, ENABLE = 5.5V, VBUS1 = VBUS2 = 5.5V ● 26 45 μA ICC_DISABLED Supply Current, Disabled VCC = 5.5V, ENABLE = 0V, VBUS1 = VBUS2 = 5.5V ● ±5 μA IPULLUPAC Transient Boosted Pull-up Current Positive Transition on Bus, Slew Rate = 0.5V/μs ● 2.5 5 mA VCC = 1.8V, BUS > VTHR IBUS(IN) BUS1,BUS2, Input Leakage Current VCC = 0V, VBUS1 = VBUS2 = 5.5V ● ±5 μA IENABLE(IN) ENABLE Input Leakage Current VCC = 0V, VENABLE = 5.5V ● ±10 μA VTHR Bus Input Threshold Voltage VCC = 1.8V ● 0.45 0.55 0.65 V VCC = 2.5V ● 0.65 0.75 0.85 V VCC = 2.7V to 5.5V ● 0.68 0.78 0.88 V VTHR_ENABLE ENABLE Threshold Voltage VCC = 1.6V, 5.5V ● 0.4 1 1.5 V SRTHRESH Slew Rate Detector Threshold BUS > VTHR, VCC = 1.8V, 5.5V ● 0.2 0.5 V/μs tr Fast Mode I2C Bus Rise Time Bus Capacitance = 400pF, VCC = 3V (Note 4) ● 300 ns fMAX Bus Maximum Operating Frequency (Note 5) ● 400 kHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The rise time of an I2C bus line is calculated from VIL(MAX) to may cause permanent damage to the device. Exposure to any Absolute VIH(MIN) or 0.9V to 2.1V (with VCC = 3V). This parameter is guaranteed by Maximum Rating condition for extended periods may affect device design and not tested. With a minimum boosted pull-up current of 2.5mA: reliability and lifetime. Rise Time = (2.1V – 0.9V) • 400pF/2.5mA = 0.19μs.
Note 2:
All currents into pins are positive. All voltages are referenced to
Note 5:
Determined by design, not tested in production. GND unless otherwise specifi ed.
Note 3:
Thermal characteristics are determined with exposed pad soldered to GND plane. If the exposed pad is left open, thermal characteristics can be drastically different. 4311fa 3
ELECTRICAL CHARACTERISTICS • The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VCC = 3.3V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Positive Supply Voltage ● 1.6 5.5 V ICC Supply Current VCC = 5.5V, ENABLE = 5.5V, VBUS1 = VBUS2 = 0V ● 200 300 μA ICC_STANDBY Supply Current, Standby Mode VCC = 5.5V, ENABLE = 5.5V, VBUS1 = VBUS2 = 5.5V ● 26 45 μA ICC_DISABLED Supply Current, Disabled VCC = 5.5V, ENABLE = 0V, VBUS1 = VBUS2 = 5.5V ● ±5 μA IPULLUPAC Transient Boosted Pull-up Current Positive Transition on Bus, Slew Rate = 0.5V/μs ● 2.5 5 mA VCC = 1.8V, BUS > VTHR IBUS(IN) BUS1,BUS2, Input Leakage Current VCC = 0V, VBUS1 = VBUS2 = 5.5V ● ±5 μA IENABLE(IN) ENABLE Input Leakage Current VCC = 0V, VENABLE = 5.5V ● ±10 μA VTHR Bus Input Threshold Voltage VCC = 1.8V ● 0.45 0.55 0.65 V VCC = 2.5V ● 0.65 0.75 0.85 V VCC = 2.7V to 5.5V ● 0.68 0.78 0.88 V VTHR_ENABLE ENABLE Threshold Voltage VCC = 1.6V, 5.5V ● 0.4 1 1.5 V SRTHRESH Slew Rate Detector Threshold BUS > VTHR, VCC = 1.8V, 5.5V ● 0.2 0.5 V/μs tr Fast Mode I2C Bus Rise Time Bus Capacitance = 400pF, VCC = 3V (Note 4) ● 300 ns fMAX Bus Maximum Operating Frequency (Note 5) ● 400 kHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The rise time of an I2C bus line is calculated from VIL(MAX) to may cause permanent damage to the device. Exposure to any Absolute VIH(MIN) or 0.9V to 2.1V (with VCC = 3V). This parameter is guaranteed by Maximum Rating condition for extended periods may affect device design and not tested. With a minimum boosted pull-up current of 2.5mA: reliability and lifetime. Rise Time = (2.1V – 0.9V) • 400pF/2.5mA = 0.19μs.
Note 2:
All currents into pins are positive. All voltages are referenced to
Note 5:
Determined by design, not tested in production. GND unless otherwise specifi ed.
Note 3:
Thermal characteristics are determined with exposed pad soldered to GND plane. If the exposed pad is left open, thermal characteristics can be drastically different. 4311fa 3