Datasheet LTC4305 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering |
| 页数 / 页 | 20 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25. C unless otherwise … |
| 文件格式/大小 | PDF / 256 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25. C unless otherwise specified.). Buffer Circuitry tPHL. vs Temperature
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LTC4305
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise specified.) Buffer Circuitry tPHL vs Temperature Rise Time vs CBUS vs VCC ICC vs Temperature
120 250 6 dV = 0.3V • VCC TO 0.7V • VCC V R CC = 5V BUS = 10k 100 5 200 VCC = 3.3V V V CC = 3.3V CC = 3.3V 80 V 4 CC = 5V VCC = 5V 150 (ns) 60 3 t PHL 100 RISE TIME (ns) CURRENT (mA) 40 2 50 20 1 UPSTREAM CONNECTED TO CHANNEL 1, SCL BUS LOW, SDA BUS HIGH 0 0 0 –50 –25 0 25 50 75 100 125 0 200 400 600 800 1000 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) CAPACITANCE, CBUS (pF) TEMPERATURE (°C) 4305 G01 4305 G02 4305 G03
VOS,DOWN-BUF V vs Bus Pull-Up Current OS,UP-BUF vs Bus Pull-Up Current
180 300 160 250 140 120 200 VCC = 3.3V 100 VCC = 3.3V (mV) VCC = 5V (mV) 150 OSV 80 OS V V CC = 5V 60 100 40 50 20 0 0 0 1 2 3 4 0 1 2 3 4 BUS PULL-UP CURRENT (mA) BUS PULL-UP CURRENT (mA) 4305 G04 4305 G05
Downstream RFET on Resistance vs V I CC and Temperature BOOST vs Temperature
45 14 40 12 V 35 CC = 5V 10 30 V ) CC = 3.3V Ω 25 8 (mA) ( VCC = 5V ONR 20 6 I BOOST 15 VCC = 3.3V 4 10 2 5 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 4305 G06 4305 G07 4305f 5
W U TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25
°
C unless otherwise specified.) Buffer Circuitry tPHL vs Temperature Rise Time vs CBUS vs VCC ICC vs Temperature
120 250 6 dV = 0.3V • VCC TO 0.7V • VCC V R CC = 5V BUS = 10k 100 5 200 VCC = 3.3V V V CC = 3.3V CC = 3.3V 80 V 4 CC = 5V VCC = 5V 150 (ns) 60 3 t PHL 100 RISE TIME (ns) CURRENT (mA) 40 2 50 20 1 UPSTREAM CONNECTED TO CHANNEL 1, SCL BUS LOW, SDA BUS HIGH 0 0 0 –50 –25 0 25 50 75 100 125 0 200 400 600 800 1000 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) CAPACITANCE, CBUS (pF) TEMPERATURE (°C) 4305 G01 4305 G02 4305 G03
VOS,DOWN-BUF V vs Bus Pull-Up Current OS,UP-BUF vs Bus Pull-Up Current
180 300 160 250 140 120 200 VCC = 3.3V 100 VCC = 3.3V (mV) VCC = 5V (mV) 150 OSV 80 OS V V CC = 5V 60 100 40 50 20 0 0 0 1 2 3 4 0 1 2 3 4 BUS PULL-UP CURRENT (mA) BUS PULL-UP CURRENT (mA) 4305 G04 4305 G05
Downstream RFET on Resistance vs V I CC and Temperature BOOST vs Temperature
45 14 40 12 V 35 CC = 5V 10 30 V ) CC = 3.3V Ω 25 8 (mA) ( VCC = 5V ONR 20 6 I BOOST 15 VCC = 3.3V 4 10 2 5 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 4305 G06 4305 G07 4305f 5