LTC1694 LINER [Linear Technology], LTC1694 Datasheet
LTC1694
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LTC1694 Summary of contents
Page 1
... An auto detect standby mode reduces supply current if both SCL and SDA are high. The LTC1694 is available in a 5-pin SOT-23 package, requiring virtually the same space as two surface mount resistors. , LTC and LT are registered trademarks of Linear Technology Corporation. ...
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... With a minimum boosted pull-up current of 1mA: – IL(MAX) Rise Time = (3V – 1.5V) • 400pF/1mA = 0.6 s Note 4: This parameter is guaranteed by design and not tested ORDER PART NUMBER 5 SMBus1 LTC1694CS5 4 SMBus2 S5 PART MARKING LTEE = 256 MIN TYP MAX UNITS 2 ...
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... 0. 2. 0.05 0 – –25 100 TEMPERATURE ( C) can range from 2.7V SMBus2 (Pin 4): Active pull-up for SMBus. SMBus1 (Pin 5): Active pull-up for SMBus. LTC1694 Boosted Pull-Up Current vs SMBus Voltage 3.5 3 2 1.5 1 2.7V CC 0.5 0 125 SMBus VOLTAGE (V) 1694 G02 ...
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... LTC1694 W BLOCK DIAGRA 100 A SMBus1 5 GND 2 SMBus2 4 TEST CIRCUITS SMBus1 CC C1 LTC1694 0 GND SMBus2 – LT1360 + TEST RAMP VOLTAGE 4 SLEW RATE DETECTOR 175 A 1.925mA + VOLTAGE COMP – STANDBY 0.65V V REF BOOSTED PULL-UP 2.2mA (TYP PULL-UP ...
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... SMBus line is within 0. and/or the slew rate drops below 0.2V/ s. Auto Detect Standby Mode The LTC1694 enters standby mode if the voltage on both the SCL and SDA lines is high (idle state). In standby mode, the pull-up currents drop to 100 A, thereby lowering the system power consumption ...
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... U APPLICATIO S I FOR ATIO R : The maximum on resistance of the open- ON(MAX) drain driver I : The maximum LTC1694 low pull-up cur- PULL-UP(MAX) rent is 350 A Fall Time Fall time is a function of the SMBus capacitance, R and the pull-up current. Figure 3 shows the maximum allowed ( based on the Intel SMBus fall time ...
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... SMBus slave device pulling the SDA line low before the rising edge of the ACK clock pulse. The LTC1694 2.2mA boosted pull-up current is activated when the SMBus host releases the SDA line, allowing the voltage to rise above the LTC1694’s comparator threshold of 0 ...
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... LTC1694 APPLICATIO S I FOR ATIO Comparison of SMBus Waveforms for the LTC1694 vs Resistor Pull-Up LTC1694 1V/DIV R PULL-UP = 15. s/DIV 200pF 100kHz SMBus RELATED PARTS PART NUMBER DESCRIPTION LTC1380/LTC1393 8-Channel/4-Channel Analog Multiplexer with SMBus Interface LTC1427-50 10-Bit Current DAC with SMBus Interface ...