74LVC1T45 SINGLE BIT DUAL POWER SUPPLY TRANSLATING TRANSCEIVER WITH 3 STATE OUTPUTS Description Pin Assignments The 74LVC1T45 is a single bit, dual supply transceiver with 3-state (Top View) (Top View) outputs suitable for transmitting a single logic bit across different voltage domains. The A input/output pin is designed to track V CCA Vcc(A) 6 Vcc(B) 1 while the B input/output tracks V . This arrangement allows for Vcc(A) 1 6 CCB Vcc(B) universal low-voltage translation between any voltages from 1.65V to GND 2 5 DIR 5 GND 2 DIR 5.5V. The Direction pin (DIR) controls the direction of the transceiver A B 3 4 and in a logic voltage related to V . When a high logic level is CCA A 3 4 B applied to DIR the A pin becomes an input and the B pin becomes the X2-DFN1410-6 SOT26 SOT363 SOT563 output. Conversely, the roles of A and B are reversed when DIR is asserted low. (Bottom View) The 3-state feature occurs when either of the power supply voltages (Top View) A are zero. This is also an Ioff feature and allows for the output to 3 4 B Vcc(A) 1 6 Vcc(B) remain in a high impedance state with both power supplies at 0V, 2 DIR GND 5 GND 2 5 DIR preventing and damaging backflow currents and providing power A34 B down electrical isolation up to 5.5V as not to interfere with any logic Vcc(A) 16 Vcc(B) activity on pin A or B. X2-DFN1010-6 X2-DFN1409-6 Chip Scale Alternative Features Applications Voltage Level Translation Wide Supply Voltage Range: Well suited to join logic types operating at different voltages V (A): from 1.65V to 5.5V CC Power Down Signal Isolation V (B): from 1.65V to 5.5V CC If either voltage domain is turned off the signal is isolated and 24mA Output Drive at 3.3V there is no loading on signal lines CMOS Low Power Consumption 16A Maximum I CC Wide array of products such as: High Noise Immunity (100mV Hysteresis Typical) Cell Phones, Tablets, E-Readers I Supports Partial-Power-Down Mode Operation OFF PCs, Notebooks, Netbooks, Ultrabooks I Controlled by Either V Being at 0 V OFF CC Networking, Routers, Gateways Inputs Accept up to 5.5V Computer Peripherals, Hard Drives, CD/DVD ROM ESD Protection Exceeds JESD 22 TV, DVD, DVR, Set-Top Box 200-V Machine Model (A115) Personal Navigation / GPS 2000-V Human Body Model (A114) MP3 Players, Cameras, Video Recorders 1000 V Charged Device Model ( C101) Latch-up Exceeds 100mA per JESD 78, Class I X2-DFN1409-6 Package Designed as a Direct Replacement for Chip Scale Packaging. Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See 74LVC1T45 Pin Descriptions Pin Pin Name Function VCC(A) 1 Supply for I/O pin A and reference for DIR GND 2 Ground A 3 Data Input/Output B 4 Data Input/Output DIR 5 Direction Control VCC(B) 6 Supply for I/O pin B Logic Diagram Function Tables Input Inputs Outputs Operation DIR (Direction Pin) A B DIR A B L B data to A output * L L L * H A data to B output * H L H * L * H * L H * H * H *Pin condition not applicable as defined by DIR. Absolute Maximum Ratings (Note 4) ( T = +25C, unless otherwise specified.) A Symbol Parameter Rating Unit ESD HBM Human Body Model ESD Protection 2 KV ESD CDM Charged Device Model ESD Protection 1 KV ESD MM Machine Model ESD Protection 200 V V (A), V (B) Supply Voltage Range -0.5 to +6.5 V CC CC V Input Voltage Range -0.5 to +6.5 V I V Voltage Applied to Output in High Impedance or I State -0.5 to +6.5 V O OFF A pin V -0.3 to V (A) +0.5 CC V Voltage Applied to Output in High or Low State O B pin V -0.3 to V (B) +0.5 CC -50 mA I Input Clamp Current V <0 IK I I Output Clamp Current -50 mA OK I Continuous Output Current 50 mA O Continuous Current Through V or GND 100 mA cc T Operating Junction Temperature -40 to +150 C J Storage Temperature -65 to +150 C T STG Note: 4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values. 2 of 14 October 2014 74LVC1T45 Diodes Incorporated www.diodes.com Document number: DS35804 Rev. 3 - 2