SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 FEATURES • • • • • • • Available in the Texas Instruments NanoStar™ and NanoFree™ Packages Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2-V to 3.6-V Power-Supply Range VCC Isolation Feature - If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State DIR Input Circuit Referenced to VCCA ±12-mA Output Drive at 3.3 V I/Os Are 4.6-V Tolerant DBV PACKAGE (TOP VIEW) VCCA 1 6 Ioff Supports Partial-Power-Down Mode Operation Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) • • DCK PACKAGE (TOP VIEW) VCCB VCCA 1 2 GND GND 2 5 DIR A 3 4 B 6 5 3 A 4 DRL PACKAGE (TOP VIEW) VCCB DIR VCCA 1 6 VCCB GND 2 5 DIR A 3 4 B B YEP OR YZP PACKAGE (BOTTOM VIEW) A GND VCCA C1 B1 A1 3 4 C2 B 2 5 B2 DIR 1 6 A2 VCCB See mechanical drawings for dimensions. DESCRIPTION/ORDERING INFORMATION This single-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC1T45 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. ORDERING INFORMATION PACKAGE (1) TA NanoStar™ – WCSP (DSBGA) 0.23-mm Large Bump – YEP –40°C to 85°C (1) (2) NanoFree™ – WCSP (DSBGA) 0.23-mm Large Bump – YZP (Pb-free) ORDERABLE PART NUMBER TOP-SIDE MARKING (2) SN74AVC1T45YEPR Tape and reel _ _ _TC_ SN74AVC1T45YZPR SOT (SOT-23) – DBV Tape and reel SN74AVC1T45DBVR DT1_ SOT (SC-70) – DCK Tape and reel SN74AVC1T45DCKR TC_ SOT (SOT-553) – DRL Reel of 4000 SN74AVC1T45DRLR UE_ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. DBV/DCK/DRL: The actual top-side marking has one additional character that designates the assembly/test site. YEP/YZP: The actual top-side marking has three preceding characters to denote year, month, and sequence code, and one following character to designate the assembly/test site. Pin 1 identifier indicates solder-bump composition (1 = SnPb, • = Pb-free). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. NanoStar, NanoFree are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2003–2005, Texas Instruments Incorporated SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 DESCRIPTION/ORDERING INFORMATION (CONTINUED) The SN74AVC1T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ. The SN74AVC1T45 is designed so that the DIR input is powered by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state. NanoStar™ and NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package. FUNCTION TABLE (1) (1) INPUT DIR OPERATION L B data to A bus H A data to B bus Input circuits of the data I/Os always are active. LOGIC DIAGRAM (POSITIVE LOGIC) DIR A 5 3 4 VCCA 2 VCCB B www.ti.com SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) VCCA VCCB Supply voltage range VI Input voltage range (2) MIN MAX –0.5 4.6 I/O ports (A port) –0.5 4.6 I/O ports (B port) –0.5 4.6 Control inputs –0.5 4.6 A port –0.5 4.6 B port –0.5 4.6 A port –0.5 VCCA + 0.5 B port –0.5 VCCB + 0.5 UNIT V V VO Voltage range applied to any output in the high-impedance or power-off state (2) VO Voltage range applied to any output in the high or low state (2) (3) IIK Input clamp current VI < 0 –50 mA IOK Output clamp current VO < 0 –50 mA IO Continuous output current ±50 mA ±100 mA Continuous current through VCCA, VCCB, or GND θJA Package thermal impedance (4) Tstg Storage temperature range DBV package 165 DCK package 259 DRL package 142 YEP/YZP package (1) (2) (3) (4) V V °C/W 123 –65 150 °C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current ratings are observed. The package thermal impedance is calculated in accordance with JESD 51-7. 3 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Recommended Operating Conditions (1) (2) (3) VCCI VCCO MIN MAX UNIT VCCA Supply voltage 1.2 3.6 V VCCB Supply voltage 1.2 3.6 V High-level input voltage VIH Low-level input voltage VIL High-level input voltage VIH VIL Low-level input voltage VI Input voltage VO Output voltage IOH Data inputs Data inputs DIR (referenced to VCCA) DIR (referenced to VCCA) 1.6 2.7 V to 3.6 V 2 V 1.2 V to 1.95 V VCCI × 0.35 1.95 V to 2.7 V 0.7 2.7 V to 3.6 V 0.8 1.2 V to 1.95 V VCCA × 0.65 1.95 V to 2.7 V 1.6 2.7 V to 3.6 V 2 1.2 V to 1.95 V VCCA × 0.35 1.95 V to 2.7 V 0.7 2.7 V to 3.6 V 3.6 3-state 0 3.6 TA Operating free-air temperature V 0.8 VCCO Low-level output current V V 0 Input transition rise or fall rate 4 1.95 V to 2.7 V Active state ∆t/∆v (1) (2) (3) VCCI × 0.65 0 High-level output current IOL 1.2 V to 1.95 V 1.2 V –3 1.4 V to 1.6 V –6 1.65 V to 1.95 V –8 2.3 V to 2.7 V –9 3 V to 3.6 V –12 1.2 V 3 1.4 V to 1.6 V 6 1.65 V to 1.95 V 8 2.3 V to 2.7 V 9 3 V to 3.6 V 12 –40 V V mA mA 5 ns/V 85 °C VCCI is the VCC associated with the input port. VCCO is the VCC associated with the output port. All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Electrical Characteristics (1) (2) over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VOL II 1.2 V to 3.6 V 1.2 V to 3.6 V IOH = –3 mA 1.2 V 1.2 V IOH = –6 mA 1.4 V 1.4 V 1.05 IOH = –8 mA 1.65 V 1.65 V 1.2 IOH = –9 mA 2.3 V 2.3 V 1.75 IOH = –12 mA 3V 3V 2.3 IOL = 100 µA 1.2 V to 3.6 V 1.2 V to 3.6 V IOL = 3 mA 1.2 V 1.2 V IOL = 6 mA 1.4 V 1.4 V 0.35 1.65 V 1.65 V 0.45 IOL = 9 mA 2.3 V 2.3 V 0.55 IOL = 12 mA 3V 3V 1.2 V to 3.6 V 1.2 V to 3.6 V Ioff IOZ IOL = 8 mA DIR A port B port A or B port ICCA VI = VIH VI = VIL VI = VCCA or GND VI or VO = 0 to 3.6 V VO = VCCO or GND VI = VCCI or GND, IO = 0 ICCB VI = VCCI or GND, IO = 0 ICCA + ICCB (see Table 1) –40°C to 85°C VCCB IOH = –100 µA VOH TA = 25°C VCCA VI = VCCI or GND, IO = 0 MIN TYP MAX MIN MAX UNIT VCCO – 0.2 V 0.95 V 0.2 0.15 V 0.7 ±0.025 ±0.25 ±1 0V 0 to 3.6 V ±0.1 ±1 ±5 0 to 3.6 V 0V ±0.1 ±1 ±5 1.2 V to 3.6 V 1.2 V to 3.6 V ±0.5 ±2.5 ±5 1.2 V to 3.6 V 1.2 V to 3.6 V 10 0V 3.6 V –2 3.6 V 0V 10 1.2 V to 3.6 V 1.2 V to 3.6 V 10 0V 3.6 V 10 3.6 V 0V –2 1.2 V to 3.6 V 1.2 V to 3.6 V 20 µA µA µA µA µA µA Ci Control inputs VI = 3.3 V or GND 3.3 V 3.3 V 2.5 pF Cio A or B port VO = 3.3 V or GND 3.3 V 3.3 V 6 pF (1) (2) VCCO is the VCC associated with the output port. VCCI is the VCC associated with the input port. 5 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Switching Characteristics over recommended operating free-air temperature range, VCCA = 1.2 V (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ tPZH (1) tPZL (1) tPZH (1) tPZL (1) (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.8 V VCCB = 2.5 V VCCB = 3.3 V TYP TYP TYP TYP TYP 3.3 2.7 2.4 2.3 2.4 3.3 2.7 2.4 2.3 2.4 3.3 3.1 2.9 2.8 2.7 3.3 3.1 2.9 2.8 2.7 5.1 5.2 5.3 5.2 3.7 5.1 5.2 5.3 5.2 3.7 5.3 4.3 4 3.3 3.7 5.3 4.3 4 3.3 3.7 8.6 7.3 6.8 6.1 6.4 8.6 7.3 6.8 6.1 6.4 8.3 7.8 7.7 7.5 5.8 8.3 7.8 7.7 7.5 5.8 VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V UNIT ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. Switching Characteristics over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ tPZH (1) tPZL (1) tPZH (1) tPZL (1) 6 (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.2 V VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V TYP MIN MAX MIN MAX MIN MAX MIN MAX 2.9 0.7 5.6 0.6 5.2 0.5 4.2 0.5 3.8 2.9 0.7 5.6 0.6 5.2 0.5 4.2 0.5 3.8 2.6 0.6 5.5 0.4 5.3 0.3 4.9 0.3 4.8 2.6 0.6 5.5 0.4 5.3 0.3 4.9 0.3 4.8 3.8 1.6 6.7 1.5 6.8 0.3 6.9 0.9 6.9 3.8 1.6 6.7 1.5 6.8 0.3 6.9 0.9 6.9 5.1 1.8 8.1 1.6 7.1 1.1 4.7 1.4 4.5 5.1 1.8 8.1 1.6 7.1 1.1 4.7 1.4 4.5 7.7 13.6 12.4 9.6 9.3 7.7 13.6 12.4 9.6 9.3 6.7 12.3 12 11.1 10.7 6.7 12.3 12 11.1 10.7 The enable time is a calculated value, derived using the formula shown in the enable times section. UNIT ns ns ns ns ns ns SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Switching Characteristics over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ tPZH (1) tPZL (1) tPZH (1) tPZL (1) (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.2 V VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V TYP MIN MAX MIN MAX MIN MAX MIN MAX 2.7 0.6 5.3 0.5 5 0.4 3.9 0.4 3.4 2.7 0.6 5.3 0.5 5 0.4 3.9 0.4 3.4 2.3 0.5 5.2 0.4 5 0.3 4.6 0.2 4.4 2.3 0.5 5.2 0.4 5 0.3 4.6 0.2 4.4 3.8 1.6 5.9 1.6 5.9 1.6 5.9 0.5 6 3.8 1.6 5.9 1.6 5.9 1.6 5.9 0.5 6 5 1.8 7.7 1.4 6.8 1 4.4 1.4 5.3 5 1.8 7.7 1.4 6.8 1 4.4 1.4 5.3 7.3 12.9 11.8 9 8.7 7.3 12.9 11.8 9 8.7 6.5 11.2 10.9 9.8 9.4 6.5 11.2 10.9 9.8 9.4 UNIT ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. Switching Characteristics over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ tPZH (1) tPZL (1) tPZH (1) tPZL (1) (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.2 V VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V TYP MIN MAX MIN MAX MIN MAX MIN MAX 2.6 0.5 4.9 0.4 4.6 0.3 3.4 0.3 3 2.6 0.5 4.9 0.4 4.6 0.3 3.4 0.3 3 2.2 0.4 4.2 0.3 3.8 0.2 3.4 0.2 3.3 2.2 0.4 4.2 0.3 3.8 0.2 3.4 0.2 3.3 2.8 0.3 3.8 0.8 3.8 0.4 3.8 0.5 3.8 2.8 0.3 3.8 0.8 3.8 0.4 3.8 0.5 3.8 4.9 2 7.6 1.5 6.5 0.6 4.1 1 4 4.9 2 7.6 1.5 6.5 0.6 4.1 1 4 7.1 11.8 10.3 7.5 7.3 7.1 11.8 10.3 7.5 7.3 5.4 8.6 8.1 7 6.6 5.4 8.6 8.1 7 6.6 UNIT ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. 7 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Switching Characteristics over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ tPZH (1) tPZL (1) tPZH (1) tPZL (1) (1) VCCB = 1.2 V VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V TYP MIN MAX MIN MAX MIN MAX MIN MAX 2.6 0.4 4.7 0.3 4.4 0.2 3.3 0.2 2.8 2.6 0.4 4.7 0.3 4.4 0.2 3.3 0.2 2.8 2.2 0.4 3.8 0.3 3.4 0.2 3 0.1 2.8 2.2 0.4 3.8 0.3 3.4 0.2 3 0.1 2.8 3.1 1.3 4.3 1.3 4.3 1.3 4.3 1.3 4.3 3.1 1.3 4.3 1.3 4.3 1.3 4.3 1.3 4.3 4 0.7 7.4 0.6 6.5 0.7 4 1.5 4.9 4 0.7 7.4 0.6 6.5 0.7 4 1.5 4.9 6.2 11.2 9.9 7 6.7 6.2 11.2 9.9 7 6.7 5.7 8.9 8.5 7.2 6.8 5.7 8.9 8.5 7.2 6.8 UNIT ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. Operating Characteristics TA = 25°C PARAMETER CpdA (1) CpdB (1) (1) 8 A-port input, B-port output B-port input, A-port output A-port input, B-port output B-port input, A-port output TEST CONDITIONS CL = 0 pF, f = 10 MHz, tr = tf = 1 ns CL = 0 pF, f = 10 MHz, tr = tf = 1 ns Power dissipation capacitance per transceiver VCCA = VCCB = 1.2 V VCCA = VCCB = 1.5 V VCCA = VCCB = 1.8 V VCCA = VCCB = 2.5 V VCCA = VCCB = 3.3 V TYP TYP TYP TYP TYP 3 3 3 3 4 13 13 14 15 15 13 13 14 15 15 3 3 3 3 3 UNIT pF pF SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 Power-Up Considerations A proper power-up sequence always should be followed to avoid excessive supply current, bus contention, oscillations, or other anomalies. To guard against such power-up problems, take the following precautions: 1. Connect ground before any supply voltage is applied. 2. Power up VCCA. 3. VCCB can be ramped up along with or after VCCA. Table 1. Typical Total Static Power Consumption (ICCA + ICCB) VCCB VCCA 0V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 0V 0 <0.5 <0.5 <0.5 <0.5 <0.5 1.2 V <0.5 <1 <1 <1 <1 1 1.5 V <0.5 <1 <1 <1 <1 1 1.8 V <0.5 <1 <1 <1 <1 <1 2.5 V <0.5 1 <1 <1 <1 <1 3.3 V <0.5 1 <1 <1 <1 <1 UNIT µA 9 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 TYPICAL CHARACTERISTICS 6 6 5 5 4 4 tPHL - ns tPLH - ns TYPICAL PROPAGATION DELAY (A to B) vs LOAD CAPACITANCE, TA = 25°C, VCCA = 1.2 V 3 2 3 2 VCCB = 1.2 V VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.5 V VCCB = 1.8 V 1 VCCB = 1.8 V 1 VCCB = 2.5 V VCCB = 2.5 V VCCB = 3.3 V 0 0 10 20 30 40 50 VCCB = 3.3 V 60 0 60 0 10 20 CL - pF 30 CL - pF 40 50 60 6 6 5 5 4 4 tPHL - ns tPLH - ns TYPICAL PROPAGATION DELAY (A to B) vs LOAD CAPACITANCE, CL - pF - 1.5 TA = 25°C, VCCA = 1.5 V 3 2 3 2 VCCB = 1.2 V VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.5 V VCCB = 1.8 V 1 VCCB = 1.8 V 1 VCCB = 2.5 V VCCB = 2.5 V VCCB = 3.3 V VCCB = 3.3 V 0 0 10 20 30 CL - pF 40 50 60 0 60 0 10 20 30 CL - pF 40 CL - pF - 1.5 10 50 60 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 TYPICAL CHARACTERISTICS 6 6 5 5 4 4 tPHL - ns tPLH - ns TYPICAL PROPAGATION DELAY (A to B) vs LOAD CAPACITANCE, TA = 25°C, VCCA = 1.8 V 3 2 3 2 VCCB = 1.2 V VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.5 V VCCB = 1.8 V 1 VCCB = 1.8 V 1 VCCB = 2.5 V VCCB = 2.5 V VCCB = 3.3 V 0 0 10 20 30 40 50 VCCB = 3.3 V 60 0 60 0 10 20 CL - pF 30 CL - pF 40 50 60 50 60 TYPICAL PROPAGATION DELAY (A to B) vs LOAD CAPACITANCE, CL - pF - 1.5 TA = 25°C, VCCA = 2.5 V 6 6 VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.8 V 5 5 VCCB = 2.5 V VCCB = 3.3 V 4 4 tPHL - ns tPLH - ns VCCB = 1.8 V VCCB = 2.5 V VCCB = 3.3 V 3 3 2 2 1 1 0 VCCB = 1.2 V VCCB = 1.5 V 0 10 20 30 CL - pF 40 50 60 0 60 0 10 20 30 CL - pF 40 CL - pF - 1.5 11 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 TYPICAL CHARACTERISTICS TYPICAL PROPAGATION DELAY (A to B) vs LOAD CAPACITANCE, TA = 25°C, VCCA = 3.3 V 6 6 VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.8 V 5 5 VCCB = 3.3 V VCCB = 3.3 V 4 4 tPHL - ns tPLH - ns VCCB = 1.8 V VCCB = 2.5 V VCCB = 2.5 V 3 3 2 2 1 1 0 VCCB = 1.2 V VCCB = 1.5 V 0 10 20 30 CL - pF 40 50 60 0 60 0 10 20 30 CL - pF 40 CL - pF - 1.5 12 50 60 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 PARAMETER MEASUREMENT INFORMATION 2 × VCCO S1 RL From Output Under Test Open GND CL (see Note A) TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 2 × VCCO GND RL tw LOAD CIRCUIT VCCI VCCI/2 Input VCCO CL RL VTP 1.2 V 1.5 V ± 0.1 V 1.8 V ± 0.15 V 2.5 V ± 0.2 V 3.3 V ± 0.3 V 15 pF 15 pF 15 pF 15 pF 15 pF 2 kΩ 2 kΩ 2 kΩ 2 kΩ 2 kΩ 0.1 V 0.1 V 0.15 V 0.15 V 0.3 V VCCI/2 0V VOLTAGE WAVEFORMS PULSE DURATION VCCA Output Control (low-level enabling) VCCA/2 VCCA/2 0V tPZL VCCI Input VCCI/2 VCCI/2 0V tPLH Output tPHL VCCO/2 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOH VCCO/2 VOL tPLZ VCCO Output Waveform 1 S1 at 2 × VCCO (see Note B) VCCO/2 VOL + VTP VOL tPZH Output Waveform 2 S1 at GND (see Note B) tPHZ VCCO/2 VOH − VTP VOH 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR10 MHz, ZO = 50 Ω, dv/dt ≥ 1 V/ns. D. The outputs are measured one at a time, with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. H. VCCI is the VCC associated with the input port. I. VCCO is the VCC associated with the output port. Figure 1. Load Circuit and Voltage Waveforms 13 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 APPLICATION INFORMATION Figure 2 shows an example of the SN74AVC1T45 being used in a unidirectional logic level-shifting application. VCC1 VCC1 VCC2 1 6 2 5 3 4 SYSTEM-1 VCC2 SYSTEM-2 PIN NAME FUNCTION 1 VCCA VCC1 SYSTEM-1 supply voltage (1.2 V to 3.6 V) DESCRIPTION 2 GND GND Device GND 3 A OUT Output level depends on VCC1 voltage. 4 B IN 5 DIR DIR GND (low level) determines B-port to A-port direction. 6 VCCB VCC2 SYSTEM-2 supply voltage (1.2 V to 3.6 V) Input threshold value depends on VCC2 voltage. Figure 2. Unidirectional Logic Level-Shifting Application 14 SN74AVC1T45 SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES530D – DECEMBER 2003 – REVISED NOVEMBER 2005 APPLICATION INFORMATION Figure 3 shows the SN74AVC1T45 being used in a bidirectional logic level-shifting application. Since the SN74AVC1T45 does not have an output-enable (OE) pin, the system designer should take precautions to avoid bus contention between SYSTEM-1 and SYSTEM-2 when changing directions. VCC1 VCC1 VCC2 Pullup/Pulldown or Bus Hold† I/O-1 VCC2 Pullup/Pulldown or Bus Hold† 1 6 2 5 3 4 I/O-2 DIR CTRL SYSTEM-1 SYSTEM-2 The following table shows data transmission from SYSTEM-1 to SYSTEM-2 and then from SYSTEM-2 to SYSTEM-1. STATE DIR CTRL I/O-1 I/O-2 1 H Out In 2 H Hi-Z Hi-Z SYSTEM-2 is getting ready to send data to SYSTEM-1. I/O-1 and I/O-2 are disabled. The bus-line state depends on pullup or pulldown. (1) 3 L Hi-Z Hi-Z DIR bit is flipped. I/O-1 and I/O-2 still are disabled. The bus-line state depends on pullup or pulldown. (1) 4 L Out In (1) DESCRIPTION SYSTEM-1 data to SYSTEM-2 SYSTEM-2 data to SYSTEM-1 SYSTEM-1 and SYSTEM-2 must use the same conditions, i.e., both pullup or both pulldown. Figure 3. Bidirectional Logic Level-Shifting Application Enable Times Calculate the enable times for the SN74AVC1T45 using the following formulas: • tPZH (DIR to A) = tPLZ (DIR to B) + tPLH (B to A) • tPZL (DIR to A) = tPHZ (DIR to B) + tPHL (B to A) • tPZH (DIR to B) = tPLZ (DIR to A) + tPLH (A to B) • tPZL (DIR to B) = tPHZ (DIR to A) + tPHL (A to B) In a bidirectional application, these enable times provide the maximum delay from the time the DIR bit is switched until an output is expected. For example, if the SN74AVC1T45 initially is transmitting from A to B, then the DIR bit is switched; the B port of the device must be disabled before presenting it with an input. After the B port has been disabled, an input signal applied to it appears on the corresponding A port after the specified propagation delay. 15 PACKAGE OPTION ADDENDUM www.ti.com 4-Nov-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty SN74AVC1T45DBVR ACTIVE SOT-23 DBV 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DBVRE4 ACTIVE SOT-23 DBV 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DBVT ACTIVE SOT-23 DBV 6 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DBVTE4 ACTIVE SOT-23 DBV 6 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DCKR ACTIVE SC70 DCK 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DCKRE4 ACTIVE SC70 DCK 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DCKT ACTIVE SC70 DCK 6 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DCKTE4 ACTIVE SC70 DCK 6 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AVC1T45DRLR ACTIVE SOP DRL 6 4000 Green (RoHS & no Sb/Br) Call TI Level-1-260C-UNLIM SN74AVC1T45YEPR ACTIVE WCSP YEP 6 3000 TBD SNPB Level-1-260C-UNLIM SN74AVC1T45YZPR ACTIVE WCSP YZP 6 3000 Pb-Free (RoHS) SNAGCU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. 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