LTC4309IGN#TRPBF Linear Technology, LTC4309IGN#TRPBF Datasheet
LTC4309IGN#TRPBF
Specifications of LTC4309IGN#TRPBF
Available stocks
Related parts for LTC4309IGN#TRPBF
LTC4309IGN#TRPBF Summary of contents
Page 1
... SDAIN and SDAOUT, SCLIN and SCLOUT. READY is an open drain output which indicates that the backplane and card sides are connected. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6356140, 6650174, 7032051. ...
Page 2
... LTC4309CGN#PBF LTC4309CGN#TRPBF LTC4309IGN#PBF LTC4309IGN#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V Positive Supply Voltage CC V Input Side Accelerator Supply Voltage CC2 I V Input Supply Current Enabled Input Supply Current Disabled SD CC ...
Page 4
LTC4309 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V SDA, SCL Logic Input Threshold Voltage THR(HYST) Hysteresis C Digital Input Capacitance SDAIN, IN SDAOUT, SCLIN, SCLOUT I Input Leakage Current LEAK V Output Low Voltage ...
Page 5
TYPICAL PERFORMANCE CHARACTERISTICS I Enabled Current vs CC Temperature 2.3V CC 5.5 5 –50 – TEMPERATURE ( C) 4309 G02 I ...
Page 6
LTC4309 PIN FUNCTIONS (DE12/GN16) ENABLE (Pin 1/Pin1): Connection Enable Input. This 1.4V digital threshold input pin enables or disables the LTC4309. For normal operation pull or connect ENABLE high. Driving ENABLE below the 0.8V threshold isolates SDAIN from SDAOUT, SCLIN ...
Page 7
PIN FUNCTIONS (DE12/GN16) V (Pin 12/Pin 16): Supply Voltage Input. Bypass this CC pin to GND with a capacitor of at least 0.01μF and place close to V for best results. CC BLOCK DIAGRAM V CC2 V CC2 8mA SDAIN ...
Page 8
LTC4309 OPERATION Start-Up When the LTC4309 fi rst receives power on its V either during power up or live insertion, it starts in an under voltage lockout (UVLO) state, ignoring any activity on the SDA or SCL pins until V ...
Page 9
OPERATION OUTPUT SIDE 50pF 1V/DIV 200ns/DIV Figure 2. Input-Output Rising Edge Waveforms typically 60mV. This offset is nearly independent of pull-up current. (See Typical Performance curves.) Propagation Delays During a rising edge, the rise time on each side is de- ...
Page 10
... LTC4309s add together, directly contributing to the same problem. Figure 7 further illustrates a repeater application. In AdvancedTCA applications, the bus pull-up resistance can be quite small. Since there is no effect on the offset due Hot Swap is a trademark of Linear Technology Corporation specification allows specification OL 4309fa ...
Page 11
APPLICATIONS INFORMATION to the pull-up impedance, multiple LTC4309 buffers can be used in a single system. This allows the user to divide the line and device capacitances into more sections with buffering and meet rise and fall times. The LTC4309 ...
Page 12
LTC4309 APPLICATIONS INFORMATION BACKPLANE CC2 10k 10k 10k 10k SDA SCL FAULT READY ENA1 ENAN Figure 4. The LTC4309 in an Application with a Staggered Connector. 12 BACKPLANE CARD CONNECTOR CONNECTORS I/O PERIPHERAL ...
Page 13
APPLICATIONS INFORMATION BACKPLANE CC2 10k 10k 10k 10k SDA SCL FAULT READY ENA1 ENAN Figure 5. The LTC4309 in an Application Where All the Pins Have the Same Length. 3. ...
Page 14
LTC4309 APPLICATIONS INFORMATION 0.01 F 0.01 F 2.7k 2.7k 10k 10k CC2 DISCEN ENABLE READY LTC4309 FAULT SDA1 SDAOUT SDAIN SCL1 SCLOUT SCLIN ACC GND Figure 7. The LTC4309 ...
Page 15
... DIMENSIONS ARE IN 3. DRAWING NOT TO SCALE 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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. DE/UE Package ...
Page 16
... Low Offset Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery LTC4307-1 High Defi nition Multimedia Interface (HDMI) Level Shifting 2-Wire Bus Buffer ThinSOT is a trademark of Linear Technology Corporation 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...