LTC4300A-1CMS8 Linear Technology, LTC4300A-1CMS8 Datasheet
LTC4300A-1CMS8
Specifications of LTC4300A-1CMS8
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LTC4300A-1CMS8 Summary of contents
Page 1
... The LTC4300A-2 also re- places the READY pin with a digital CMOS input pin, ACC, which enables and disables the rise-time accelerator currents. The LTC4300A is available in a small 8-pin MSOP package 10k ...
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... CC2 LTC4300A-2 SDA, SCL Floating LTC4300A-1 LTC4300A-1, ENABLE Pin ENABLE from LTC4300A-1 CC LTC4300A-1 LTC4300A-1 LTC4300A-1 LTC4300A-1 LTC4300A 3mA, LTC4300A-1 PULLUP U W ORDER PART NUMBER LTC4300A-1CMS8 LTC4300A-1IMS8 TOP VIEW LTC4300A-2CMS8 SDAOUT LTC4300A-2IMS8 6 SDAIN 5 READY/ACC* MS8 MS8 PACKAGE PART MARKING *LTC4300A-2 = 200 C/W JA ...
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... The denotes the specifications which apply over the full operating = 2.7V to 5.5V, unless otherwise noted CONDITIONS Positive Transition on SDA,SCL 2.7V, CC Slew Rate = 1.25V/ s (Note 2), LTC4300A-2, ACC = 0.7 • 2.7V CC2 CC2 LTC4300A-2 LTC4300A-2 LTC4300A-2 LTC4300A-2 10k SDA, SCL 3.3V (Note 3), ...
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... LTC4300A-1/LTC4300A TYPICAL PERFOR A CE CHARACTERISTICS I vs Temperature (LTC4300A-1) CC 5.3 5 5.5V CC 5.1 5.0 4.9 4.8 4 2.7V CC 4.6 4.5 4.4 4.3 –40 25 TEMPERATURE ( Temperature PULLUPAC 2. –50 – TEMPERATURE ( 4300-1/2 G01 75 100 4300-1/2 G03 Input – Output t vs Temperature PHL (LTC4300A-1) 100 3.3V ...
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... This is the supply voltage for the devices on the backplane busses. Connect pull-up resistors from SDAIN and SCLIN (and also from SDAOUT and SCLOUT for the LTC4300A-1) to this pin. Place a bypass capacitor of at least 0.01 F close to this pin for best results. to provide the pull up. For the CC CC2 ...
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... LTC4300A-1/LTC4300A-2 W BLOCK DIAGRA (LTC4300A-1) SLEW RATE DETECTOR SDAIN 6 CONNECT SLEW RATE DETECTOR SCLIN 3 CONNECT + – + 0.55V / – CC 0.45V UVLO DELAY, ENABLE 1 RISING ONLY 6 TM 2-Wire Bus Buffer and Hot Swap Controller 2mA 2mA BACKPLANE-TO-CARD CONNECTION CONNECT ENABLE 100k RCH1 1V PRECHARGE 100k ...
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... ACC DETECTOR SCLIN 3 CONNECT + – + 0.55V / – CC 0.45V DELAY, UVLO RISING ONLY LTC4300A-1/LTC4300A-2 2-Wire Bus Buffer and Hot Swap Controller 2mA 2mA BACKPLANE-TO-CARD CONNECTION CONNECT 100k RCH1 1V PRECHARGE 100k RCH2 2mA 2mA BACKPLANE-TO-CARD CONNECTION STOP BIT AND BUS IDLE 0.5 A 20pF ...
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... I/O card. Once the LTC4300A comes out of UVLO, it assumes that SDAIN and SCLIN have been inserted into a live system and that SDAOUT and SCLOUT are being powered up at the same time as itself ...
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... These allow the user to choose weaker DC pull-up currents on the bus, reducing power consumption while still meet- ing system rise-time requirements. During positive bus transitions, the LTC4300A switches in 2mA (typical) of current to quickly slew the SDA and SCL lines once their DC voltages exceed 0.6V. Using a general rule of 20pF of ...
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... BACKPLANE 10k 10k BD_SEL SDA SCL Figure 3. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A CompactPCI System addition, regardless of the bus capacitance, always choose 3.6V maximum. The start-up circuitry requires logic CC high voltages on SDAOUT and SCLOUT to connect the backplane to the card, and these pull-up values are needed to overcome the precharge voltage ...
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... V CC SDA SCL R1 R2 10k 10k Figure 4. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A CompactPCI System LTC4300A-1/LTC4300A monitored by a filtered UVLO circuit. With the V CC voltage powering up after all other pins have established connection, the UVLO circuit ensures that the backplane and card data and clock busses are not connected until the transients associated with live insertion have settled ...
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... CONNECTOR BACKPLANE 10k 10k SDA SCL Figure 5. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A PCI System Figure 6 shows the LTC4300A application where bypassing on the user has a custom connector with pins of three CC different lengths available. Making V en- ensures that all other pins are firmly connected before ...
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... U U APPLICATIO S I FOR ATIO BACKPLANE CONNECTOR BACKPLANE V CC2 R1 R2 10k 10k V CC SDA SCL Figure 6. Inserting Multiple I/O Cards into a Live Backplane Using the LTC4300A-2 with a Custom Connector 2-WIRE SYSTEM LTC4300A-1 10k 10k ENABLE SDA1 SDAIN SCLIN SCL1 TO OTHER SYSTEM 1 ...
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... Level Translator and Power Supply Redundancy (LTC4300A-2) Systems requiring different supply voltages for the backplane side and the card side can use the LTC4300A-2, as shown in Figure 9. The pull-up resistors on the card side connect from SDAOUT to SCLOUT to V the backplane side connect from SDAIN and SCLIN to V The LTC4300A-2 functions for voltages ranging from 2 ...
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... Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC4300A-1/LTC4300A-2 U MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0 ...
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... F 10k CC2 SDAIN SDAOUT U1 SCLIN SCLOUT LTC4300A-2 ACC GND Figure 3.3V Level Translator COMMENTS Low Single-Ended/70 Differential, ON Expandable to 32 Single or 16 Differential Channels Precision 50 A 2.5% Tolerance Over Temperature, 4 Selectable SMBus Addresses, DAC Powers up at Zero or Midscale 8 Selectable Addresses/16-Channel Capability DNL < ...