74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs tm Features General Description ■ Bidirectional interface between busses ranging from The VCX163245 is a dual supply, 16-bit translating transceiver that is designed for 2 way asynchronous communication between busses at different supply voltages by providing true signal translation. The supply rails consist of VCCA, which is a higher potential rail operating at 2.3V to 3.6V and VCCB, which is the lower potential rail operating at 1.65V to 2.7V. (VCCB must be less than or equal to VCCA for proper device operation). This dual supply design allows for translation from 1.8V to 2.5V busses to busses at a higher potential, up to 3.3V. ■ ■ ■ ■ ■ ■ ■ 1.65V to 3.6V Supports Live Insertion and Withdrawal(1) Static Drive (IOH/IOL) – ±24mA @ 3.0V VCC – ±18mA @ 2.3V VCC – ±6mA @ 1.65V VCC Uses proprietary Quiet Series™ noise/EMI reduction circuitry Functionally compatible with 74 series 16245 Latchup performance exceeds 300mA ESD performance: – Human Body Model >2000V – Machine model >200V Also packaged in plastic Fine-Pitch Ball Grid Array (FBGA) Note: 1. To ensure the high impedance state during power up or power down, OEn should be tied to VCCB through a pull up resistor. The minimum value of the resistor is determined by the current sourcing capability of the driver. The Transmit/Receive (T/R) input determines the direction of data flow. Transmit (active-HIGH) enables data from A Ports to B Ports; Receive (active-LOW) enables data from B Ports to A Ports. The Output Enable (OE) input, when HIGH, disables both A and B Ports by placing them in a High-Z condition. The A Port interfaces with the higher voltage bus (2.7V to 3.3V); The B Port interfaces with the lower voltage bus (1.8V to 2.5V). Also the VCX163245 is designed so that the control pins (T/Rn, OEn) are supplied by VCCB. The 74VCX163245 is suitable for mixed voltage applications such as notebook computers using a 1.8V CPU and 3.3V peripheral components. It is fabricated with an Advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. Ordering Information Order Number Package Number 74VCX163245G(2)(3) BGA54A 74VCX163245MTD(3) MTD48 Package Description 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Notes: 2. Ordering code “G” indicates Trays. 3. Device also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Quiet Series™ is a trademark of Fairchild Semiconductor Corporation. ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs May 2007 Pin Assignment for TSSOP Pin Assignment for FBGA (Top Thru View) FBGA Pin Assignments A 1 2 3 4 5 6 B0 NC T/R1 OE1 NC A0 B B2 B1 NC NC A1 A2 C B4 B3 VCCB VCCA A3 A4 D B6 B5 GND GND A5 A6 E B8 B7 GND GND A7 A8 F B10 B9 GND GND A9 A10 G B12 B11 VCCB VCCA A11 A12 H B14 B13 NC NC A13 A14 J B15 NC T/R2 OE2 NC A15 Pin Descriptions Pin Names Description OEn Output Enable Input (Active LOW) T/Rn Transmit/Receive Input A0–A15 Side A Inputs or 3-STATE Outputs B0–B15 Side B Inputs or 3-STATE Outputs NC No Connect Logic Diagram ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 2 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Connection Diagram Inputs Inputs OE1 T/R1 Outputs OE2 T/R2 L Bus B8–B15 Data to Bus A8–A15 Outputs L L Bus B0–B7 Data to Bus A0–A7 L L H Bus A0–A7 Data to Bus B0–B7 L H Bus A8–A15 Data to Bus B8–B15 H X HIGH Z State on A0–A7, B0–B7 H X HIGH-Z State on A8–A15, B8–B15 H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs may not float) Z = High Impedance VCX163245 Translator Power Up Sequence Recommendations To guard against power up problems, some simple guidelines need to be adhered to. The VCX163245 is designed so that the control pins (T/Rn, OEn) are supplied by VCCB. Therefore the first recommendation is to begin by powering up the control side of the device, VCCB. The OEn control pins should be ramped with or ahead of VCCB, this will guard against bus contentions and oscillations as all A Port and B Port outputs will be disabled. To ensure the high impedance state during power up or power down, OEn should be tied to VCCB through a pull up resistor. The minimum value of the resistor is determined by the current sourcing capability of the driver. Second, the T/Rn control pins should be placed at logic LOW (0V) level, this will ensure that the B-side bus pins are configured as inputs to help guard against bus contention and oscillations. B-side Data Inputs should be driven to a valid logic level (0V or VCCB), this will prevent excessive current draw and oscillations. VCCA can then be powered up after VCCB, however VCCA must be greater than or equal to VCCB to ensure proper device operation. Upon completion of these steps the device can then be configured for the users desired operation. Following these steps will help to prevent possible damage to the translator device as well as other system components. Logic Diagrams Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays. ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 3 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Truth Tables Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCCA Parameter Supply Voltage –0.5V to +4.6V –0.5V to VCCA VCCB VI VI/O DC Input Voltage –0.5V to +4.6V DC Output Voltage Outputs 3-STATE –0.5V to +4.6V An Output Active(4) –0.5V to VCCA + 0.5V Bn Output Active(4) –0.5V to VCCB + 0.5V IIK DC Input Diode Current, VI < 0V IOK DC Output Diode Current IOH/IOL Rating –50mA VO < 0V –50mA VO > VCC +50mA DC Output Source/Sink Current ±50mA DC VCC or Ground Current ±100mA ICC or Ground Supply Pin TSTG Storage Temperature –65°C to +150°C Recommended Operating Conditions(5) The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol VCCA Parameter Power Rating Supply(6) 2.3V to 3.6V 1.65V to 2.7V VCCB VI VI/O IOH/IOL Input Voltage () @ OE, T/R 0V to VCCB Input/Output Voltage () An 0V to VCCA Bn 0V to VCCB Output Current in IOH/IOL VCCA = 3.0V to 3.6V ±24mA VCCA = 2.3V to 2.7V ±18mA VCCB = 2.3V to 2.7V ±18mA VCCB = 1.65V to 1.95V TA ∆t / ∆ V ±6mA Free Air Operating Temperature –40°C to +85°C Minimum Input Edge Rate, VIN = 0.8V to 2.0V, VCC = 3.0V 10ns/V Notes: 4. IO Absolute Maximum Rating must be observed. 5. Unused inputs or I/O pins must be held HIGH or LOW. They may not float. 6. Operation requires: VCCB ≤ VCCA ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 4 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Absolute Maximum Ratings Symbol VIHA Parameter VCCB (V) VCCA (V) Conditions Min. Max. Units HIGH Level Input Voltage An 1.65–1.95 2.3–2.7 1.6 V Bn, T/R, OE 1.65–1.95 2.3–2.7 0.65 x VCCB V LOW Level Input Voltage An 1.65–1.95 2.3–2.7 0.7 V Bn, T/R, OE 1.65–1.95 2.3–2.7 0.35 x VCCB V 1.65–1.95 2.3–2.7 IOH = –100µA VCCA – 0.2 1.65 2.3–2.7 IOH = –18mA 1.7 1.65–1.95 2.3–2.7 IOH = –100µA VCCB – 0.2 1.65–1.95 2.3 IOH = –6mA 1.65–1.95 2.3–2.7 IOL = 100µA 0.2 1.65 2.3–2.7 IOL = 18mA 0.6 1.65–1.95 2.3–2.7 IOL = 100µA 0.2 1.65–1.95 2.3 IOL = 6mA 0.3 Input Leakage Current @ OE, T/R 1.65–1.95 2.3–2.7 0V ≤ VI ≤ 3.6V ±5.0 µA IOZ 3-STATE Output Leakage 1.65–1.95 2.3–2.7 0V ≤ VO ≤ 3.6V, OE = VCCB, VI = VIH or VIL ±10 µA IOFF Power Off Leakage Current 0 0 0 ≤ (VI, VO) ≤ 3.6V 10 µA 1.65–1.95 2.3–2.7 An = VCCA or GND, Bn, OE, & T/R = VCCB or GND 20 µA 1.65–1.95 2.3–2.7 VCCA ≤ An ≤ 3.6V, VCCB ≤ Bn, OE, T/R ≤ 3.6V ±20 µA Increase in ICC per Input, Bn, T/R, OE 1.65–1.95 2.3–2.7 VI = VCCB – 0.6V 750 µA Increase in ICC per Input, An 1.65–1.95 2.3–2.7 VI = VCCA – 0.6V 750 µA VIHB VILA VILB VOHA VOHB VOLA VOLB II HIGH Level Output Voltage HIGH Level Output Voltage Low Level Output Voltage Low Level Output Voltage ICCA /ICCB Quiescent Supply Current, per supply, VCCA / VCCB ∆ICC ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 V V 1.25 V V www.fairchildsemi.com 5 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs DC Electrical Characteristics (1.65V < VCCB ≤ 1.95V, 2.3V < VCCA ≤ 2.7V) Symbol VIHA Parameter VCCA (V) Conditions Min. Max. Units An 1.65–1.95 3.0–3.6 2.0 V Bn, T/R, OE 1.65–1.95 3.0–3.6 0.65 x VCCB V An 1.65–1.95 3.0–3.6 0.8 V Bn, T/R, OE 1.65–1.95 3.0–3.6 0.35 x VCCB V 1.65–1.95 3.0–3.6 IOH = –100µA VCCA – 0.2 1.65 3.0–3.6 IOH = –24mA 2.2 1.65–1.95 3.0–3.6 IOH = –100µA VCCA – 0.2 1.65–1.95 3.0 IOH = –6mA 1.65–1.95 3.0–3.6 IOL = 100µA 0.2 1.65 3.0–3.6 IOL = 24mA 0.55 1.65–1.95 3.0–3.6 IOL = 100µA 0.2 1.65–1.95 3.0 IOL = 6mA 0.3 Input Leakage Current @ OE, T/R 1.65–1.95 3.0–3.6 0V ≤ VI ≤ 3.6V ±5.0 µA IOZ 3-STATE Output Leakage 1.65–1.95 3.0–3.6 0V ≤ VO ≤ 3.6V, OE = VCCB, VI = VIH or VIL ±10 µA IOFF Power OFF Leakage Current 0 0 0 ≤ (VI, VO) ≤ 3.6V 10 µA 1.65–1.95 3.0–3.6 An = VCCA or GND, Bn, OE, & T/R = VCCB or GND 20 µA 1.65–1.95 3.0–3.6 VCCA ≤ An ≤ 3.6V, VCCB ≤ Bn, OE, T/R ≤ 3.6V ±20 µA Increase in ICC per Input, Bn, T/R, OE, 1.65–1.95 3.0–3.6 VI = VCCB – 0.6V 750 µA Increase in ICC per Input, An 1.65–1.95 3.0–3.6 VI = VCCA – 0.6V 750 µA VIHB VILA VILB VOHA VOHB VOLA VOLB II HIGH Level Input Voltage VCCB (V) LOW Level Input Voltage HIGH Level Output Voltage HIGH Level Output Voltage LOW Level Output Voltage LOW Level Output Voltage ICCA /ICCB Quiescent Supply Current, per supply, VCCA/VCCB ∆ICC ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 V V 1.25 V V www.fairchildsemi.com 6 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs DC Electrical Characteristics (1.65V < VCCB ≤ 1.95V, 3.0V < VCCA ≤ 3.6V) Symbol VIHA Parameter VCCB (V) VCCA (V) Conditions Min. Max. Units HIGH Level Input Voltage An 2.3–2.7 3.0–3.6 2.0 V Bn, T/R, OE 2.3–2.7 3.0–3.6 1.6 V LOW Level Input Voltage An 2.3–2.7 3.0–3.6 0.8 V Bn, T/R, OE 2.3–2.7 3.0–3.6 0.7 V 2.3–2.7 3.0–3.6 IOH = –100µA VCCA – 0.2 2.3 3.0–3.6 IOH = –24mA 2.2 2.3–2.7 3.0–3.6 IOH = –100µA VCCB – 0.2 2.3–2.7 3.0 IOH = –18mA 1.7 2.3–2.7 3.0–3.6 IOL = 100µA 0.2 2.3 3.0–3.6 IOL = 24mA 0.55 2.3–2.7 3.0–3.6 IOL = 100µA 0.2 2.3–2.7 3.0 IOL = 18mA 0.6 Input Leakage Current @ OE, T/R 2.3–2.7 3.0–3.6 0V ≤ VI ≤ 3.6V ±5.0 µA IOZ 3-STATE Output Leakage @ An 2.3–2.7 3.0–3.6 0V ≤ VO ≤ 3.6V, OE = VCCA, VI = VIH or VIL ±10 µA IOFF Power OFF Leakage Current 0 0 0 ≤ (VI, VO) ≤ 3.6V 10 µA 2.3–2.7 3.0–3.6 An = VCCA or GND, Bn, OE, & T/R = VCCB or GND 20 µA 2.3–2.7 3.0–3.6 VCCA ≤ An ≤ 3.6V, VCCB ≤ Bn, OE, T/R ≤ 3.6V ±20 µA Increase in ICC per Input, Bn, T/R, OE 2.3–2.7 3.0–3.6 VI = VCCB – 0.6V 750 µA Increase in ICC per Input, An 2.3–2.7 3.0–3.6 VI = VCCA – 0.6V 750 µA VIHB VILA VILB VOHA VOHB VOLA VOLB II HIGH Level Output Voltage HIGH Level Output Voltage LOW Level Output Voltage LOW Level Output Voltage ICCA /ICCB Quiescent Supply Current, per supply, VCCA/VCCB ∆ICC ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 V V V V www.fairchildsemi.com 7 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs DC Electrical Characteristics (2.3V < VCCB ≤ 2.7V, 3.0V ≤ VCCA ≤ 3.6V) TA = –40°C to +85°C, CL = 30 pF, RL = 500Ω Symbol Parameter VCCB = 1.65V to 1.95V, VCCB = 1.65V to 1.95V, VCCA = 2.3V to 2.7V VCCA = 3.0V to 3.6V Min. Max. Min. Max. VCCB = 2.3V to 2.7V, VCCA = 3.0V to 3.6V Min. Max. Units tPHL, tPLH Propagation Delay, A to B 1.5 5.8 1.5 6.2 0.8 4.4 ns tPHL, tPLH Propagation Delay, B to A 0.8 5.5 0.6 5.1 0.6 4.0 ns tPZL, tPZH Output Enable Time, OE to B 1.5 8.3 1.5 8.2 0.8 4.6 ns tPZL, tPZH Output Enable Time, OE to A 0.8 5.3 0.6 5.1 0.6 4.0 ns tPLZ, tPHZ Output Disable Time, OE to B 0.8 4.6 0.8 4.5 0.8 4.4 ns tPLZ, tPHZ Output Disable Time, OE to A 0.8 5.2 0.6 5.6 0.6 4.8 ns 0.75 ns tosHL, tosLH Output to Output Skew(7) 0.05 0.5 Note: 7. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tosHL) or LOW-to-HIGH (tosLH). Dynamic Switching Characteristics Symbol VOLP VOLP VOLV VOLV VOHV VOHV Parameter Quiet Output Dynamic Peak VOL, A to B VCCB (V) VCCA (V) 1.8 2.5 1.8 3.3 2.5 3.3 1.8 2.5 1.8 3.3 2.5 3.3 Quiet Output Dynamic Valley VOL, A to B 1.8 2.5 1.8 3.3 2.5 3.3 Quiet Output Dynamic Valley VOL, B to A 1.8 2.5 1.8 3.3 2.5 3.3 1.8 2.5 1.8 3.3 2.5 3.3 1.8 2.5 1.8 3.3 2.5 3.3 Quiet Output Dynamic Peak VOL, B to A Quiet Output Dynamic Valley VOH, A to B Quiet Output Dynamic Valley VOH, B to A ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 Conditions CL = 30 pF, VIH = VCC, VIL = 0V TA = +25°C Typical Units 0.25 V 0.25 0.6 CL = 30 pF, VIH = VCC, VIL = 0V 0.6 V 0.8 0.8 CL = 30 pF, VIH = VCC, VIL = 0V –0.25 CL = 30 pF, VIH = VCC, VIL = 0V –0.6 V –0.25 –0.6 V –0.8 –0.8 CL = 30 pF, VIH = VCC, VIL = 0V 1.3 V 1.3 1.7 CL = 30 pF, VIH = VCC, VIL = 0V 1.7 V 2.0 2.0 www.fairchildsemi.com 8 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs AC Electrical Characteristics Symbol Parameter Conditions TA = +25°C Units CIN Input Capacitance VCCB = 2.5V, VCCA = 3.3V, VI = 0V or VCCA/B 5 pF CI/O Input/Output Capacitance VCCB = 2.5V, VCCA = 3.3V, VI = 0V or VCCA/B 6 pF CPD Power Dissipation Capacitance VCCB = 2.5V, VCCA = 3.3V, VI = 0V or VCCA/B, f = 10MHz 20 pF AC Loading and Waveforms Figure 1. AC Test Circuit Test Switch tPLH, tPHL OPEN tPZL, tPLZ 6V at VCC = 3.3 ±0.3V; VCC x 2 at VCC = 2.5 ± 0.2V; 1.8V ± 0.15V tPZH, tPHZ GND Figure 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic tR = tF ≤ 2.0 ns, 10% to 90% VCC Symbol 3.3V ± 0.3V 2.5V ± 0.2V 1.8V ± 0.15V Figure 2. Waveform for Inverting and Non-inverting Functions tR = tF ≤ 2.0 ns, 10% to 90% Vmi 1.5V VCC / 2 VCC / 2 Vmo 1.5V VCC / 2 VCC / 2 VX VOL + 0.3V VOL + 0.15V VOL + 0.15V VY VOH – 0.3V VOH – 0.15V VOH – 0.15V Figure 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic tR = tF ≤ 2.0 ns, 10% to 90% ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 9 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Capacitance 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Physical Dimensions Dimensions are in millimeters unless otherwise noted. Figure 5. 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA54A ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 10 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 6. 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 11 ® ACEx Across the board. Around the world.™ ActiveArray™ Bottomless™ Build it Now™ CoolFET™ CROSSVOLT™ CTL™ Current Transfer Logic™ DOME™ 2 E CMOS™ ® EcoSPARK EnSigna™ FACT Quiet Series™ ® FACT ® FAST FASTr™ FPS™ ® FRFET GlobalOptoisolator™ GTO™ HiSeC™ i-Lo™ ImpliedDisconnect™ IntelliMAX™ ISOPLANAR™ MICROCOUPLER™ MicroPak™ MICROWIRE™ Motion-SPM™ MSX™ MSXPro™ OCX™ OCXPro™ ® OPTOLOGIC ® OPTOPLANAR PACMAN™ PDP-SPM™ POP™ ® Power220 ® Power247 PowerEdge™ PowerSaver™ Power-SPM™ ® PowerTrench Programmable Active Droop™ ® QFET QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ ScalarPump™ SMART START™ ® SPM STEALTH™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TCM™ ® The Power Franchise TinyBoost™ TinyBuck™ ® TinyLogic TINYOPTO™ TinyPower™ TinyWire™ TruTranslation™ µSerDes™ ® UHC UniFET™ VCX™ Wire™ ™ DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Definition Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I26 ©2000 Fairchild Semiconductor Corporation 74VCX163245 Rev. 1.7 www.fairchildsemi.com 12 74VCX163245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.