Datasheet LT3960 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | I2C to CAN-Physical Transceiver |
| 页数 / 页 | 20 / 5 — SWITCHING CHARACTERISTICS. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
SWITCHING CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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SWITCHING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VCC = 3.3V, Figure 2 applies with R PU = 4.99k, RL = 60Ω, EN/MODE = VCC, TYP values unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Transceiver Timing
fSCL SCL Clock Frequency (Notes 5,6) l 0 400 kHz tPI2CBD I2C to I2CAN Dominant Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 45 80 130 ns VCC = 5V l 45 75 115 ns tPI2CBR I2C to I2CAN Recessive Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 80 120 170 ns VCC = 5V l 60 90 120 ns tPBI2CD I2CAN Dominant to I2C Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 25 40 65 ns VCC = 5V l 25 40 65 ns tPBI2CR I2CAN Recessive to I2C Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 25 45 80 ns VCC = 5V l 20 35 60 ns tTO;CAN I2CAN Dominant Timeout Time (Figure 2, Figure 4) l 0.5 1.5 2 ms tEN;I2C I2C Driver Enable from Shutdown VCC = 3.3V or 5V (Figure 2, Figure 5) l 40 µs tEN;CAN I2CAN Driver Enable from Shutdown VCC = 3.3V or 5V (Figure 2, Figure 6) l 40 µs tSHDN;I2C Time to Shutdown, I2C (Figure 2, Figure 5) l 500 ns tSHDN;CAN Time to Shutdown, I2CAN (Figure 2, Figure 6) l 500 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3960 includes overtemperature protection that is intended may cause permanent damage to the device. Exposure to any Absolute to protect the device during momentary overload conditions. Junction Maximum Rating condition for extended periods may affect device temperature will exceed the maximum operating junction temperature reliability and lifetime. when overtemperature is active. Continuous operating above the specified
Note 2:
The LT3960E is guaranteed to meet specified performance maximum operating junction temperature may impair device reliability. from 0°C to 125°C. Specifications over the –40°C to 125°C operating
Note 4:
Pin capacitance given for reference only and is not tested in temperature range are assured by design, characterization and correlation production. with statistical process controls. The LT3960J is guaranteed to meet
Note 5:
Rise and fall times are measured at 30% and 70% levels. performance specifications over the full –40°C to 150°C operating
Note 6:
Maximum SCL clock frequency will be affected by delays through junction temperature range. High junction temperatures degrade operating the twisted-pair interface and I/O circuitry of other devices on the bus. lifetimes. Operating lifetime is derated at junction temperatures greater These delays may limit the operation frequency to below the LT3960 than 125°C. maximum specification.
Note 7:
The LT3960 does not support clock stretching. SCL should not be pulled low by slave devices. Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Operation Applications Information Typical Applications Typical Application Related Parts
SWITCHING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VCC = 3.3V, Figure 2 applies with R PU = 4.99k, RL = 60Ω, EN/MODE = VCC, TYP values unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Transceiver Timing
fSCL SCL Clock Frequency (Notes 5,6) l 0 400 kHz tPI2CBD I2C to I2CAN Dominant Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 45 80 130 ns VCC = 5V l 45 75 115 ns tPI2CBR I2C to I2CAN Recessive Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 80 120 170 ns VCC = 5V l 60 90 120 ns tPBI2CD I2CAN Dominant to I2C Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 25 40 65 ns VCC = 5V l 25 40 65 ns tPBI2CR I2CAN Recessive to I2C Propagation Delay (Figure 2, Figure 3) VCC = 3.3V l 25 45 80 ns VCC = 5V l 20 35 60 ns tTO;CAN I2CAN Dominant Timeout Time (Figure 2, Figure 4) l 0.5 1.5 2 ms tEN;I2C I2C Driver Enable from Shutdown VCC = 3.3V or 5V (Figure 2, Figure 5) l 40 µs tEN;CAN I2CAN Driver Enable from Shutdown VCC = 3.3V or 5V (Figure 2, Figure 6) l 40 µs tSHDN;I2C Time to Shutdown, I2C (Figure 2, Figure 5) l 500 ns tSHDN;CAN Time to Shutdown, I2CAN (Figure 2, Figure 6) l 500 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3960 includes overtemperature protection that is intended may cause permanent damage to the device. Exposure to any Absolute to protect the device during momentary overload conditions. Junction Maximum Rating condition for extended periods may affect device temperature will exceed the maximum operating junction temperature reliability and lifetime. when overtemperature is active. Continuous operating above the specified
Note 2:
The LT3960E is guaranteed to meet specified performance maximum operating junction temperature may impair device reliability. from 0°C to 125°C. Specifications over the –40°C to 125°C operating
Note 4:
Pin capacitance given for reference only and is not tested in temperature range are assured by design, characterization and correlation production. with statistical process controls. The LT3960J is guaranteed to meet
Note 5:
Rise and fall times are measured at 30% and 70% levels. performance specifications over the full –40°C to 150°C operating
Note 6:
Maximum SCL clock frequency will be affected by delays through junction temperature range. High junction temperatures degrade operating the twisted-pair interface and I/O circuitry of other devices on the bus. lifetimes. Operating lifetime is derated at junction temperatures greater These delays may limit the operation frequency to below the LT3960 than 125°C. maximum specification.
Note 7:
The LT3960 does not support clock stretching. SCL should not be pulled low by slave devices. Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Switching Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuits Timing Diagrams Operation Applications Information Typical Applications Typical Application Related Parts