SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 FEATURES • • • • • DB, DW, OR PW PACKAGE (TOP VIEW) Bidirectional Voltage Translator 5.5 V on A Port and 2.7 V to 3.6 V on B Port Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage Latch-Up Performance Exceeds 250 mA Per JESD 17 ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) (5 V) VCCA DIR A1 A2 A3 A4 A5 A6 A7 A8 GND GND DESCRIPTION/ORDERING INFORMATION 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 VCCB (3.3 V) VCCB (3.3 V) OE B1 B2 B3 B4 B5 B6 B7 B8 GND This 8-bit (octal) noninverting bus transceiver contains two separate supply rails; B port has VCCB, which is set at 3.3 V, and A port has VCCA, which is set at 5 V. This allows for translation from a 3.3-V to a 5-V environment, and vice versa. <br/> The SN74LVC4245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The control circuitry (DIR, OE) is powered by VCCA. The SN74LVC4245A pinout allows the designer to switch to a normal all-3.3-V or all-5-V 20-pin '245 device without board re-layout. The designer uses the data paths for pins 2–11 and 14–23 of the SN74LVC4245A to align with the conventional '245 pinout. ORDERING INFORMATION PACKAGE (1) TA SOIC – DW –40°C to 85°C SSOP – DB TSSOP – PW (1) ORDERABLE PART NUMBER Tube of 25 SN74LVC4245ADW Reel of 2000 SN74LVC4245ADWR Reel of 2000 SN74LVC4245ADBR Tube of 60 SN74LVC4245APW Reel of 2000 SN74LVC4245APWR Reel of 250 SN74LVC4245APWT TOP-SIDE MARKING LVC4245A LJ245A LJ245A Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation 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. 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 © 1994–2005, Texas Instruments Incorporated SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 LOGIC DIAGRAM (POSITIVE LOGIC) 2 DIR 22 OE A1 3 21 B1 To Seven Other Channels Absolute Maximum Ratings (1) over operating free-air temperature range for VCCA = 4.5 V to 5.5 V (unless otherwise noted) MIN VCCA Supply voltage range MAX –0.5 6.5 A port (2) –0.5 VCCA + 0.5 Control inputs –0.5 6 –0.5 VCCA + 0.5 UNIT V VI Input voltage range VO Output voltage range A port (2) 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 each VCCA or GND θJA Package thermal impedance (3) Tstg Storage temperature range DB package 63 DW package 46 PW package (1) (2) (3) 2 V V °C/W 88 –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. This value is limited to 6 V maximum. The package thermal impedance is calculated in accordance with JESD 51-7. SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com Absolute Maximum Ratings SCAS375H – MARCH 1994 – REVISED MARCH 2005 (1) over operating free-air temperature range for VCCB = 2.7 V to 3.6 V (unless otherwise noted) VCCB Supply voltage range VI Input voltage range MIN MAX –0.5 4.6 UNIT V B port (2) –0.5 VCCB + 0.5 V port (2) –0.5 VCCB + 0.5 VO Output voltage range B 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 VCCB or GND θJA Package thermal impedance (3) Tstg (1) (2) (3) DB package 63 DW package 46 PW package 88 Storage temperature range –65 150 V °C/W °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. This value is limited to 4.6 V maximum. The package thermal impedance is calculated in accordance with JESD 51-7. Recommended Operating Conditions (1) for VCCA = 4.5 V to 5.5 V VCCA Supply voltage VIH High-level input voltage VIL Low-level input voltage VIA Input voltage VOA Output voltage IOH High-level output current IOL Low-level output current TA Operating free-air temperature (1) MIN MAX 4.5 5.5 2 UNIT V V 0.8 V 0 VCCA V 0 VCCA V –24 mA 24 mA 85 °C –40 All unused inputs of the device must be held at the associated VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. Recommended Operating Conditions (1) for VCCB = 2.7 V to 3.6 V VCCB Supply voltage VIH High-level input voltage VCCB = 2.7 V to 3.6 V VIL Low-level input voltage VCCB = 2.7 V to 3.6 V VIB Input voltage VOB Output voltage IOH High-level output current IOL Low-level output current TA Operating free-air temperature (1) MIN MAX 2.7 3.6 2 UNIT V V 0.8 V 0 VCCB V 0 VCCB V VCCB = 2.7 V –12 VCCB = 3 V –24 VCCB = 2.7 V 12 VCCB = 3 V 24 –40 85 mA mA °C All unused inputs of the device must be held at the associated VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 3 SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 Electrical Characteristics (1) over recommended operating free-air temperature range for VCCA = 4.5 V to 5.5 V (unless otherwise noted) PARAMETER TEST CONDITIONS VCCA IOH = –100 µA VOH IOH = –24 mA MIN TYP (2) 4.5 V 4.3 5.5 V 5.3 4.5 V 3.7 5.5 V 4.7 VOL IOL = 24 mA UNIT V 4.5 V IOL = 100 µA MAX 0.2 5.5 V 0.2 4.5 V 0.55 5.5 V 0.55 V II Control inputs VI = VCCA or GND 5.5 V ±1 µA IOZ (3) A port VO = VCCA or GND 5.5 V ±5 µA ICCA VI = VCCA or GND, IO = 0 5.5 V 80 µA ∆ICCA (4) One input at 3.4 V, Other inputs at VCCA or GND 5.5 V 1.5 mA Ci Control inputs VI = VCCA or GND Open 5 pF Cio A port VO = VCCA or GND 5V 11 pF (1) (2) (3) (4) VCCB = 2.7 V to 3.6 V All typical values are measured at VCC = 5 V, TA = 25°C. For I/O ports, the parameter IOZ includes the input leakage current. This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or the associated VCC. Electrical Characteristics (1) over recommended operating free-air temperature range for VCCB = 2.7 V to 3.6 V (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = –100 µA VOH IOZ (3) B port 2.2 2.4 IOH = –24 mA 3V 2 IOL = 100 µA 2.7 V to 3.6 V IOL = 12 mA 2.7 V 0.4 IOL = 24 mA 3V 0.55 VO = VCCB or GND VI = VCCB or GND, IO = 0 ∆ICCB (4) One input at VCCB – 0.6 V, Other inputs at VCCB or GND (1) (2) (3) (4) 4 B port MAX 3V ICCB Cio MIN TYP (2) 2.7 V IOH = –12 mA VOL VCCB VO = VCCB or GND UNIT 2.7 V to 3.6 V VCC – 0.2 V 0.2 V 3.6 V ±5 3.6 V 50 µA 2.7 V to 3.6 V 0.5 mA 3.3 V 11 µA pF VCCA = 5 V ± 0.5 V All typical values are measured at VCC = 3.3 V, TA = 25°C. For I/O ports, the parameter IOZ includes the input leakage current. This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or the associated VCC. SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 Switching Characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1 and Figure 2) PARAMETER tPHL tPLH tPHL tPLH tPZL tPZH tPZL tPZH tPLZ tPHZ tPLZ tPHZ FROM (INPUT) TO (OUTPUT) A B B A OE A OE B OE A OE B VCCA = 5 V ± 0.5 V, VCCB = 2.7 V to 3.6 V UNIT MIN MAX 1 6.3 1 6.7 1 6.1 1 5 1 9 1 8.1 1 8.8 1 9.8 1 7 1 5.8 1 7.7 1 7.8 ns ns ns ns ns ns Operating Characteristics VCCA = 4.5 V to 5.5 V, VCCB = 2.7 V to 3.6 V, TA = 25°C PARAMETER Cpd Power dissipation capacitance per transceiver TEST CONDITIONS Outputs enabled Outputs disabled CL = 0, f = 10 MHz TYP 39.5 5 UNIT pF Power-Up Considerations (1) TI level-translation devices offer an opportunity for successful mixed-voltage signal design. A proper power-up sequence always should be followed to avoid excessive supply current, bus contention, oscillations, or other anomalies caused by improperly biased device pins. Take these precautions to guard against such power-up problems: 1. Connect ground before any supply voltage is applied. 2. Power up the control side of the device (VCCA for all four of these devices). 3. Tie OE to VCCA with a pullup resistor so that it ramps with VCCA. 4. Depending on the direction of the data path, DIR can be high or low. If DIR high is needed (A data to B bus), ramp it with VCCA. Otherwise, keep DIR low. (1) Refer to the TI application report, Texas Instruments Voltage-Level-Translation Devices, literature number SCEA021. 5 SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 PARAMETER MEASUREMENT INFORMATION A PORT 2 × VCC 500 Ω From Output Under Test S1 Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND 1.5 V 1.5 V LOAD CIRCUIT tw VCC Input 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS PULSE DURATION 1.5 V 1.5 V 0V tPLH tPHL VOH Output 50% VCC 0V tPZL VCC Input 3V Output Control 50% VCC VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES NONINVERTING OUTPUTS Output Waveform 1 S1 at 2 × VCC (see Note B) Output Waveform 2 S1 at GND (see Note B) tPLZ VCC 50% VCC tPZH 50% VCC VOL + 0.3 V VOL tPHZ VOH - 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time, with one transition per measurement. E. All parameters and waveforms are not applicable to all devices. Figure 1. Load Circuit and Voltage Waveforms 6 SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS www.ti.com SCAS375H – MARCH 1994 – REVISED MARCH 2005 PARAMETER MEASUREMENT INFORMATION B PORT 7V 500 Ω From Output Under Test S1 Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7V GND LOAD CIRCUIT tw 3V Input 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS PULSE DURATION 1.5 V 1.5 V 0V tPLH tPHL VOH Output 1.5 V 1.5 V 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES NONINVERTING OUTPUTS 1.5 V 0V tPZL 3V Input 3V Output Control Output Waveform 1 S1 at 7 V (see Note B) tPLZ 3.5 V 1.5 V tPZH Output Waveform 2 S1 at GND (see Note B) VOL + 0.3 V VOL tPHZ 1.5 V VOH - 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time, with one transition per measurement. E. All parameters and waveforms are not applicable to all devices. Figure 2. Load Circuit and Voltage Waveforms 7 PACKAGE OPTION ADDENDUM www.ti.com 6-Dec-2006 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty SN74LVC4245ADBR ACTIVE SSOP DB 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245ADBRE4 ACTIVE SSOP DB 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245ADW ACTIVE SOIC DW 24 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245ADWE4 ACTIVE SOIC DW 24 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245ADWR ACTIVE SOIC DW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245ADWRE4 ACTIVE SOIC DW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APW ACTIVE TSSOP PW 24 60 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWE4 ACTIVE TSSOP PW 24 60 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWG4 ACTIVE TSSOP PW 24 60 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWR ACTIVE TSSOP PW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWRE4 ACTIVE TSSOP PW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWRG4 ACTIVE TSSOP PW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWT ACTIVE TSSOP PW 24 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVC4245APWTE4 ACTIVE TSSOP PW 24 250 Green (RoHS & no Sb/Br) CU NIPDAU 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), Pb-Free (RoHS Exempt), 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. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. 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 Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 6-Dec-2006 provided. 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Addendum-Page 2 MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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