SN74LVC2T45MDCTTEP

SN74LVC2T45-EP www.ti.com SCES777C – NOVEMBER 2008 – REVISED JULY 2010 DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS Check for Samples: SN74LVC2T45-EP FEATURES 1 • Available in the Texas Instruments NanoFree™ Package Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-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 Low Power Consumption, 10-mA Max ICC ±24-mA Output Drive at 3.3 V Ioff Supports Partial-Power-Down Mode Operation Max Data Rates – 420 Mbps (3.3-V to 5-V Translation) – 210 Mbps (Translate to 3.3 V) – 140 Mbps (Translate to 2.5 V) – 75 Mbps (Translate to 1.8 V) Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 4000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) • • • • • • • • • SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS • • • • • • • Controlled Baseline One Assembly/Test Site One Fabrication Site Available Temperature Ranges: – –55°C to 125°C – –55°C to 150°C Extended Product Life Cycle Extended Product-Change Notification Product Traceability DCT OR DCU PACKAGE (TOP VIEW) VCCA A1 A2 GND 1 8 2 7 3 6 4 5 VCCB B1 B2 DIR DESCRIPTION/ORDERING INFORMATION This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. Table 1. ORDERING INFORMATION (1) TA PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING –55°C to 125°C SSOP – DCT Reel of 250 SN74LVC2T45MDCTTEP NXR –55°C to 150°C SSOP – DCU Reel of 250 SN74LVC2T45SDCUT CCVR (1) (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 1 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 © 2008–2010, Texas Instruments Incorporated SN74LVC2T45-EP SCES777C – NOVEMBER 2008 – REVISED JULY 2010 www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) The SN74LVC2T45 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 SN74LVC2T45 is designed so that the DIR input circuit is supplied 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, both ports are in the high-impedance state. NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package. Table 2. FUNCTION TABLE (1) (EACH TRANSCEIVER) (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 A1 5 2 7 A2 3 6 VCCA 2 B1 B2 VCCB Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP SN74LVC2T45-EP www.ti.com SCES777C – NOVEMBER 2008 – REVISED JULY 2010 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX Supply voltage range –0.5 6.5 V VI Input voltage range (2) –0.5 6.5 V VO Voltage range applied to any output in the high-impedance or power-off state (2) –0.5 6.5 V VO Voltage range applied to any output in the high or low state (2) A port –0.5 VCCA + 0.5 B port –0.5 VCCB + 0.5 IIK Input clamp current VI < 0 –50 mA IOK Output clamp current VO < 0 –50 mA IO Continuous output current ±50 mA ±100 mA VCCA VCCB (3) Continuous current through VCC or GND qJA Package thermal impedance (4) Tstg Storage temperature range (1) (2) (3) (4) DCT 220 DCU 329.4 –65 UNIT V °C/W 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 and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. The value of VCC is provided in the recommended operating conditions table. The package thermal impedance is calculated in accordance with JESD 51-7. Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP Submit Documentation Feedback 3 SN74LVC2T45-EP SCES777C – NOVEMBER 2008 – REVISED JULY 2010 www.ti.com Recommended Operating Conditions (1) (2) (3) VCCI VCCA VCCB VCCO Supply voltage 1.65 V to 1.95 V High-level input voltage VIH Data inputs (4) MIN MAX 1.65 5.5 1.65 5.5 2.3 V to 2.7 V 1.7 3 V to 3.6 V Data inputs (4) VCCI × 0.7 VCCI × 0.35 2.3 V to 2.7 V 0.7 3 V to 3.6 V 0.8 4.5 V to 5.5 V High-level input voltage DIR (referenced to VCCA) (5) VCCA × 0.65 2.3 V to 2.7 V 1.7 3 V to 3.6 V 4.5 V to 5.5 V Low-level input voltage VI Input voltage VO Output voltage DIR (referenced to VCCA) (5) VCCA × 0.7 VCCA × 0.35 2.3 V to 2.7 V 0.7 3 V to 3.6 V 0.8 4.5 V to 5.5 V High-level output current IOL Low-level output current Δt/Δv Input transition rise or fall rate Data inputs Control input TA (1) (2) (3) (4) (5) 4 Operating free-air temperature V VCCA × 0.3 0 5.5 V 0 VCCO V 1.65 V to 1.95 V IOH V 2 1.65 V to 1.95 V VIL V VCCI × 0.3 1.65 V to 1.95 V VIH V 2 1.65 V to 1.95 V VIL V VCCI × 0.65 4.5 V to 5.5 V Low-level input voltage UNIT –4 2.3 V to 2.7 V –8 3 V to 3.6 V –24 4.5 V to 5.5 V –32 1.65 V to 1.95 V 4 2.3 V to 2.7 V 8 3 V to 3.6 V 24 4.5 V to 5.5 V 32 1.65 V to 1.95 V 20 2.3 V to 2.7 V 20 3 V to 3.6 V 10 4.5 V to 5.5 V 5 1.65 V to 5.5 V 5 DCT –55 125 DCU –55 150 mA mA ns/V °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. For VCCI values not specified in the data sheet, VIH min = VCCI × 0.7 V, VIL max = VCCI × 0.3 V. For VCCI values not specified in the data sheet, VIH min = VCCA × 0.7 V, VIL max = VCCA × 0.3 V. Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP SN74LVC2T45-EP www.ti.com SCES777C – NOVEMBER 2008 – REVISED JULY 2010 Electrical Characteristics (1) (2) over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = –100 mA IOH = –4 mA VOH IOH = –8 mA VI = VIH IOH = –24 mA Ioff B port 2.3 V 1.9 1.9 3V 3V 2.4 2.4 3.8 0.1 1.65 V 0.45 0.45 2.3 V 2.3 V 0.3 0.3 3V 3V 0.55 0.55 VI = VIL VI = VCCA or GND VI or VO = 0 to 5.5 V VI = VCCI or GND, VI = VCCI or GND, IO = 0 IO = 0 IO = 0 One A port at VCCA – 0.6 V, A port DIR at VCCA, B port = open DIR DIR at VCCA – 0.6 V, B port = open, A port at VCCA or GND ΔICCB B port One B port at VCCB – 0.6 V, DIR at GND, A port = open CI DIR VI = VCCA or GND Cio A or VO = VCCA/B or GND B port 3.8 4.5 V 4.5 V 0.55 0.55 1.65 V to 5.5 V 1.65 V to 5.5 V ±1 ±2 ±2 0V 0 to 5.5 V ±1 ±9 ±9 0 to 5.5 V 0V ±1 ±9 ±9 1.65 V to 5.5 V 1.65 V to 5.5 V ±1 ±9 ±9 1.65 V to 5.5 V 1.65 V to 5.5 V 4 4 5V 0V 2 2 0V 5V –12 –12 1.65 V to 5.5 V 1.65 V to 5.5 V 4 4 5V 0V –12 –12 0V 5V 2 2 1.65 V to 5.5 V 1.65 V to 5.5 V 4 4 50 50 50 50 50 50 3 V to 5.5 V UNIT V 1.65 V VI = VCCI or GND, (1) (2) 1.2 2.3 V 0.1 ICCA ΔICCA VCCO – 0.1 1.2 4.5 V A or VO = VCCO or GND B port ICCA + ICCB (see Table 3) VCCO – 0.1 1.65 V MAX 1.65 V to 4.5 V IOZ ICCB 1.65 V to 4.5 V MAX 4.5 V IOL = 32 mA A port MIN 1.65 V MAX 1.65 V to 4.5 V IOL = 24 mA DIR –55°C to 150°C MIN 1.65 V to 4.5 V TYP IOL = 100 mA IOL = 8 mA II –55°C to 125°C VCCB IOH = –32 mA IOL = 4 mA VOL TA = 25°C VCCA 3 V to 5.5 V V mA mA mA mA mA mA mA 3 V to 5.5 V 3 V to 5.5 V 3.3 V 3.3 V 2.5 pF 3.3 V 3.3 V 6 pF mA VCCO is the VCC associated with the output port. VCCI is the VCC associated with the input port. Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP Submit Documentation Feedback 5 SN74LVC2T45-EP SCES777C – NOVEMBER 2008 – REVISED JULY 2010 www.ti.com 1000.00 100.00 Estimated Life (Years) Electromigration Fail Mode 10.00 Wirebond Voiding Fail Mode 1.00 0.10 80 90 100 110 120 130 140 150 160 170 180 Continuous T A (°C) Notes: 1. See datasheet for absolute maximum and minimum recommended operating conditions. 2. Silicon operating life design goal is 10 years at 105°C junction temperature (does not include package interconnect life). 3. Product disclaimer applies to DCU package 150°C. Figure 1. LVC2T45SDCU Operating Life Derating Chart 6 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP SN74LVC2T45-EP www.ti.com SCES777C – NOVEMBER 2008 – REVISED JULY 2010 Switching Characteristics over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (unless otherwise noted) (see Figure 2) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ (1) tPZH (1) tPZL (1) tPZH (1) tPZL (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.8 V ±0.15 V VCCB = 2.5 V ±0.2 V VCCB = 3.3 V ±0.3 V VCCB = 5 V ±0.5 V UNIT MIN MAX MIN MAX MIN MAX MIN MAX 3 21.7 2.2 14.3 1.7 12.3 1.4 11.2 2.8 28.3 2.2 12.5 1.8 11.1 1.7 11 3 21.7 2.3 20 2.1 19.5 1.9 19.1 2.8 18.3 2.1 16.9 2 16.6 1.8 16.2 10.6 34.9 10.3 34.5 10.5 34.5 10.7 33.3 7.3 23.7 7.5 23.6 7.5 23.5 7 23.4 10 31.9 8.4 18.9 6.5 15.3 4.1 12.6 6.5 23.5 7.2 16.6 4.3 13.7 2.1 11.1 45.2 36.6 33.2 30.2 50.2 35.8 31.9 28.8 45.4 37.9 35.8 34.6 53.2 47 45.6 44.3 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 (unless otherwise noted) (see Figure 2) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ (1) tPZH (1) tPZL (1) tPZH (1) tPZL (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.8 V ±0.15 V MIN VCCB = 2.5 V ±0.2 V VCCB = 3.3 V ±0.3 V VCCB = 5 V ±0.5 V UNIT MAX MIN MAX MIN MAX MIN MAX 2.3 20 1.5 12.5 1.3 10.4 1.1 9.1 2.1 16.9 1.4 11.5 1.3 9.4 0.9 8.6 2.2 14.3 1.5 12.5 1.4 12 1 11.5 2.2 12.5 1.4 11.5 1.3 11 0.9 10.2 6.6 21.1 7.1 20.8 6.8 20.8 5.2 20.5 5.3 16.6 5.2 16.5 4.9 16.3 4.8 16.3 10.7 31.9 8.1 17.9 5.8 14.5 3.5 11.6 7.8 22.9 6.2 15.2 3.6 12.9 1.4 11.2 37.2 27.7 24.9 21.7 44.4 29.4 25.5 21.8 26.6 29 26.7 25.4 38 32.3 30.2 29.1 ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP Submit Documentation Feedback 7 SN74LVC2T45-EP SCES777C – NOVEMBER 2008 – REVISED JULY 2010 www.ti.com Switching Characteristics over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 2) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ (1) tPZH (1) tPZL (1) tPZH (1) tPZL (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.8 V ±0.15 V VCCB = 2.5 V ±0.2 V VCCB = 3.3 V ±0.3 V VCCB = 5 V ±0.5 V UNIT MIN MAX MIN MAX MIN MAX MIN MAX 2.1 19.5 1.4 12 0.7 9.6 0.7 8.4 2 16.6 1.3 11 0.8 9 0.7 8 1.7 12.3 1.3 10.4 0.7 9.8 0.6 9.4 1.8 11.1 1.3 9.4 0.8 9 0.7 8.5 5 14.9 5.1 14.8 5 14.8 5 14.4 3.4 12.4 3.7 12.4 3.9 12.1 3.3 11.8 11.2 31.3 8 17.7 5.8 14.4 2.9 11.4 9.4 21.7 5.6 15.3 4.3 12.3 1 9.6 34 25.7 22.1 19 42.4 27.1 23.4 19.9 31.9 24.4 21.9 20.2 31.5 25.8 23.8 22.4 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 = 5 V ± 0.5 V (unless otherwise noted) (see Figure 2) PARAMETER tPLH tPHL tPLH tPHL tPHZ tPLZ tPHZ tPLZ (1) 8 tPZH (1) tPZL (1) tPZH (1) tPZL (1) FROM (INPUT) TO (OUTPUT) A B B A DIR A DIR B DIR A DIR B VCCB = 1.8 V ±0.15 V MIN MAX 1.9 1.8 1.4 1.7 VCCB = 2.5 V ±0.2 V VCCB = 3.3 V ±0.3 V VCCB = 5 V ±0.5 V UNIT MIN MAX MIN MAX MIN MAX 19.1 1 11.5 0.6 9.4 0.5 7.9 16.2 0.9 10.2 0.7 8.5 0.5 7.5 11.2 1 9.1 0.7 8.4 0.5 7.9 11 0.9 8.6 0.7 8 0.5 7.5 2.9 12.2 2.9 11.9 2.8 11.9 2.2 11.8 1.4 10.9 1.3 10.7 0.7 10.7 0.7 10.6 11.2 30.1 7.2 17.9 5.8 14.1 1.3 11.3 8.4 20.9 5 15 4 11.7 1 9.6 32.1 24.1 20.1 18.5 41.1 26.5 22.1 18.8 30 22.2 20.1 18.5 28.4 22.1 22.4 19.3 ns ns ns ns ns ns The enable time is a calculated value, derived using the formula shown in the enable times section. Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP SN74LVC2T45-EP www.ti.com SCES777C – NOVEMBER 2008 – REVISED JULY 2010 Operating Characteristics TA = 25°C PARAMETER CpdA CpdB (1) (1) A-port input, B-port output B-port input, A-port output (1) 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 VCCA = VCCB = 1.8 V VCCA = VCCB = 2.5 V VCCA = VCCB = 3.3 V VCCA = VCCB = 5 V TYP TYP TYP TYP 3 4 4 4 18 19 20 21 18 19 20 21 3 4 4 4 UNIT pF pF Power dissipation capacitance per transceiver Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): SN74LVC2T45-EP Submit Documentation Feedback 9 SN74LVC2T45-EP SCES777C – NOVEMBER 2008 – REVISED JULY 2010 www.ti.com 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 3. Typical Total Static Power Consumption (ICCA + ICCB) VCCB 10 VCCA 0V 1.8 V 2.5 V 3.3 V 5V