Datasheet LTC4310-1, LTC4310-2 (Analog Devices) - 3

LTC4310-1/LTC4310-2
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, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supplies
VCC Input Supply Range l 3 5.5 V ICC Input Supply Current, LTC4310-1 EN = VCC = 5.5V, SDA = SCL = VSDA,SCL(OL) l 6.5 8 mA Input Supply Current, LTC4310-2 EN = VCC = 5.5V, SDA = SCL = VSDA,SCL(OL) l 7 8.5 mA ICC(SD) Shutdown Input Supply Current EN = 0V, VCC = 5.5V l 0.1 ±10 µA VCCH(UVL) Input Supply Undervoltage Lockout l 2.1 2.4 2.7 V Rising Threshold Voltage VCC(UVL, HYST) Input Supply Undervoltage Lockout l 90 190 270 mV Hysteresis
I2C Interface
VSDA,SCL(OL) SDA, SCL Logic Low Output Voltage I(SDA,SCL) = 4mA, 500µA; VCC = 3V, 5.5V l 310 350 380 mV VSDA,SCL(IL,R) SDA, SCL Controlled Rising Edge Rate VCC = 3V, 5.5V (Note 5) l 0.3 • VCC 0.35 • VCC 0.4 • VCC V Turn-Off Threshold Voltage VSDA,SCL(IL,F) SDA, SCL Logic Low Falling Input VCC = 3V l 0.4 • VCC 0.45 • VCC 0.5 • VCC V Threshold Voltage ISDA,SCL(OH) SDA, SCL Input Current SDA = SCL = 5.5V; VCC = 0V, 5.5V l 0 ±5 µA
I2C Interface Timing
dV/dtRISE Bus Line Controlled Rising Edge Rate, 0.35V < VBUS < 0.35 • VCC, VCC = 3V l 0.8 1.16 1.4 V/µs LTC4310-1 0.35V < VBUS < 0.35 • VCC, VCC = 5.5V l 1.5 2.14 2.6 V/µs Bus Line Controlled Rising Edge Rate, 0.35V < VBUS < 0.35 • VCC, VCC = 3V l 2 3 3.9 V/µs LTC4310-2 0.35V < VBUS < 0.35 • VCC, VCC = 5.5V l 3.9 5.4 6.9 V/µs tPHL(SDA,SCL) SDA, SCL High-to-Low Propagation VCC = 5.5V (Note 3) l 170 270 ns Delay fSCL(MAX) Maximum SCL Clock Frequency LTC4310-1 l 100 kHz LTC4310-2 l 400 kHz CIN SCL, SDA Input Capacitance SCL, SDA = VCC (Note 2) 10 pF
Rise Time Accelerators
VBOOST SDA, SCL Rise Time Accelerator VCC = 3V (Note 5) l 0.32 • VCC 0.45 • VCC 0.5 • VCC V Activation Threshold Voltage IBOOST SDA, SCL Rise Time Accelerator VCC = 3V l 2 6 mA Current
READY Open-Drain Output
VREADY(OL) READY Output Low Voltage IREADY = 4mA l 50 400 mV IREADY(OH) READY Off-Current READY= VCC = 5.5V, EN = 0V l 0.1 ±10 µA
Connection Control
VEN,RISE EN Rising Threshold Voltage l 0.6 • VCC 0.9 • VCC V VEN,FALL EN Falling Threshold Voltage l 0.1 • VCC 0.3 • VCC V IEN(OH) EN Input Current EN = VCC = 5.5V l 0.1 ±10 µA tIDLE Bus Idle Time l 75 115 155 µs tUVLO,EN_FILT Start-Up Filter Time l 700 900 1200 µs tSTUCK SDA, SCL Bus Stuck Low Disconnect l 27 37 47 ms 431012fa 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts