HD74LVC4245A Octal Bus Transceiver and 3.3 V to 5 V shifters with 3-state Outputs ADE-205-683 (Z) Rev.0 Apr. 2002 Description The HD74LVC4245A has eight bus transceivers with three state outputs in a 24 pin package. When (DIR) is high, data flows from the A inputs to the B outputs, and when (DIR) is low, data flows from the B inputs to the A outputs. A and B bus are separated by making enable input (OE) high level. And this product has two terminals (VCCA, VCCB), VCCA (5V) is connected with control input and A bus side, VCCB (3.3V) connected with B bus side. VCCA and VCCB are isolated. This allows for translation from a 3.3 V to a 5 V environment, and vice versa. Low voltage and high speed operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features • This product function as level shift transceiver that change VCCA input level to VCCB output level, VCCB input level to VCCA output level by providing different supply voltage to VCCA and VCCB. • This product is able to the power management: Turn on and off the supply on VCCB side with providing the supply of VCCA. (Enable input (OE): High level ) • VCCA = 4.5 V to 5.5 V, VCCB = 2.7 V to 3.6 V • All control input VI (max) = 5.5 V (@VCCA = 0 V to 5.5 V) • All A bus side input outputs VI/O (max) = 5.5 V (@VCCA = 0 V or output off state) • All B bus side input outputs VI/O (max) = 3.6 V (@VCCB = 0 V or output off state) • High output current A bus side : ±24 mA (@VCCA = 4.5 V to 5.5 V) B bus side : ±12 mA (@VCCB = 2.7 V) ±24 mA (@VCCB = 3.0 V to 3.6 V) HD74LVC4245A • Package type Product code example: HD74LVC4245ATEL Package type Package code Package suffix Taping code TSSOP-24pin TTP-24DBV T EL (1,000pcs / Reel) Rev.0, Apr. 2002, page 2 of 14 HD74LVC4245A Function Table Inputs OE DIR Operation L L B data to A bus L H A data to B bus H X Z H: L: X: Z: High level Low level Immaterial High impedance Pin Arrangement VCCA 1 24 VCCB DIR 2 23 VCCB A1 3 22 OE A2 4 21 B1 A3 5 A4 6 20 B2 A5 7 18 B4 A6 8 17 B5 A7 9 16 B6 A8 10 15 B7 GND 11 14 B8 GND 12 13 GND 19 B3 (Top view) Rev.0, Apr. 2002, page 3 of 14 HD74LVC4245A Absolute Maximum Ratings (1) For VCCA Item Supply voltage Input voltage *1 Input / output voltage Symbol Ratings Unit Conditions VCCA –0.5 to 6.0 V VI –0.5 to 6.0 V DIR, OE VI/O –0.5 to VCCA+0.5 V A port output “H” or “L” –0.5 to 6.0 A port output “Z” or VCCA : OFF Input diode current IIK –50 mA VI < 0 Output diode current IOK –50 mA VO < 0 50 Output current VO > VCCA+0.5 IO ±50 VCCA, GND current ICCA or IGND 100 mA Maximum power dissipation *2 at Ta = 25°C (in still air) PT 862 mW Storage temperature Tstg –65 to 150 °C Notes: mA TSSOP The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. 1. The input and output voltage ratings may be exceeded even if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation was calculated using a junction temperature of 150°C. (2) For VCCB Item Supply voltage *1 Input / output voltage Symbol Ratings Unit VCCB –0.5 to 4.6 V VI/O –0.5 to VCCB+0.5 V –0.5 to 4.6 B port output “H” or “L” B port output “Z” or VCCB : OFF Input diode current IIK –50 mA Output diode current IOK –50 mA 50 VI < 0 VO < 0 VO > VCCB+0.5 Output current IO ±50 mA VCCB,GND current ICCB or IGND 100 mA Maximum power dissipation *2 at Ta = 25°C (in still air) PT 862 mW Storage temperature Tstg –65 to 150 °C Notes: Conditions TSSOP The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. 1. The input and output voltage ratings may be exceeded even if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation was calculated using a junction temperature of 150°C. Rev.0, Apr. 2002, page 4 of 14 HD74LVC4245A Recommended Operating Conditions (1) For VCCA Item Symbol Ratings Unit Supply voltage VCCA 4.5 to 5.5 V Input / output voltage VI 0 to 5.5 V VI/O 0 to VCCA A port output “H” or “L” 0 to 5.5 A port output “Z” or VCCA : OFF Output current IOH –24 IOL 24 DIR, OE mA Input transition rise or fall ∆t / ∆v time 10 ns / V Operating temperature –40 to 85 °C Ta Conditions Note: Unused or floating inputs must be held high or low. (2) For VCCB Item Symbol Ratings Unit Supply voltage VCCB 2.7 to 3.6 V Input / output voltage VI/O 0 to VCCB V 0 to 3.6 Output current IOH –12 mA VCCB = 2.7 V VCCB = 3.0 to 3.6 V 12 VCCB = 2.7 V 24 VCCB = 3.0 to 3.6 V Input transition rise or fall ∆t / ∆v time 10 ns / V Operating temperature –40 to 85 °C Ta B port output “H” or “L” B port output “Z” or VCCB : OFF –24 IOL Conditions Note: Unused or floating inputs must be held high or low. Rev.0, Apr. 2002, page 5 of 14 HD74LVC4245A Block Diagram DIR 2 22 A1 3 21 To seven other channels Rev.0, Apr. 2002, page 6 of 14 OE B1 HD74LVC4245A Electrical Characteristics (Ta = –40 to 85°C) Item Symbol VCCA (V) Input voltage VIH Output voltage Max Unit Test Conditions 4.5 to 5.5 2.7 to 3.6 2 V VIL 4.5 to 5.5 2.7 to 3.6 0.8 VOHA 4.5 to 5.5 2.7 to 3.6 VCCA–0.2 VOHB VOLA VOLB VCCB (V) Min 4.5 2.7 to 3.6 3.7 5.5 2.7 to 3.6 4.7 IOH = –100 µA V IOH = –24 mA 4.5 to 5.5 2.7 to 3.6 VCCB–0.2 IOH = –100 µA IOH = –12 mA 4.5 to 5.5 2.7 2.2 4.5 to 5.5 3.0 2.4 4.5 to 5.5 3.0 2 IOH = –24 mA 0.2 IOL = 100 µA IOL = 24 mA 4.5 to 5.5 2.7 to 3.6 4.5 2.7 to 3.6 0.55 5.5 2.7 to 3.6 0.55 4.5 to 5.5 2.7 to 3.6 0.2 IOL = 100 µA 4.5 to 5.5 2.7 0.4 IOL = 12 mA 4.5 to 5.5 3.0 0.55 IOL = 24 mA Input current IIN 5.5 2.7 to 3.6 ±1 µA Control input Off state output current IOZA 5.5 2.7 to 3.6 ±5 µA A port, VO = VCCA or GND IOZB 4.5 to 5.5 3.6 ±5 Output leak current IOFF 0 0 20 µA A port, VI/O = 5.5 V B port, VI/O = 3.6 V Quiescent supply current ICCA 5.5 2.7 to 3.6 80 µA B to A, control input =VCCA or GND Bn = VCCB or GND, IO (A port) = 0 ICCB 4.5 to 5.5 3.6 50 ∆ICCA 5.5 2.7 to 3.6 1.5 ∆ICCB 4.5 to 5.5 2.7 to 3.6 0.5 Increase in ICC *1 per input Notes: B port, VO = VCCB or GND A to B, control input =VCCA or GND An = VCCA or GND, IO (B port) = 0 mA A port or Control input, One input at 3.4 V, Other input at VCCA at GND B port, One input at VCCB–0.6V, Other input at VCCB at GND For condition shown as Min or Max use the appropriate values under recommended operating conditions. 1. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. Rev.0, Apr. 2002, page 7 of 14 HD74LVC4245A Capacitance (Ta = 25°C) Item Symbol VCCA (V) VCCB (V) Min Typ Max Unit Test Conditions Control Input capacitance CIN 5 3.3 5 pF VI = VCCA or GND Input / output capacitance CI/O 5 3.3 11 pF A port, VI = VCCA or GND, B port, VI = VCCB or GND Switching Characteristics (Ta = –40 to 85°C) VCCA = 5.0±0.5 V, VCCB = 2.7 V to 3.6 V Item Symbol Min Propagation delay time tPLH Output enable time Typ Max Unit Test conditions From(Input) To(Output) 1 6.7 ns CL = 50 pF A B tPHL 1 6.3 tPLH 1 5 B A tPHL 1 6.1 tZH 1 8.1 OE A tZL 1 9 tZH 1 9.8 OE B OE A OE B tZL 1 8.8 Output disable time tHZ 1 5.8 tLZ 1 7 tHZ 1 7.8 tLZ 1 7.7 Rev.0, Apr. 2002, page 8 of 14 RL = 500 Ω ns CL = 50 pF RL = 500 Ω ns CL = 50 pF RL = 500 Ω HD74LVC4245A Operating Characteristics Item Symbol VCCA (V) Power dissipation capacitance CPD 5.0 VCCB (V) Min Typ Max Unit Test Conditions 3.0 39.5 pF f = 10 MHz CL = 0 Power-up considerations 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. Next, power up the control side of the device. (Power up of VCCA is first. Next power up is VCCB. ) 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. Overwise, keep DIR low. Rev.0, Apr. 2002, page 9 of 14 HD74LVC4245A Test Circuit See under table S1 500 Ω OPEN GND *1 CL = 50 pF 500 Ω Load circuit for outputs S1 Symbol VCCA = 5±0.5 V VCCB = 2.7 to 3.6 V A/OE to B B/OE to A t PLH / tPHL OPEN OPEN t ZH / t HZ GND GND t ZL / t LZ 6V 2 × VCCA Note: 1. CL includes probe and jig capacitance. Rev.0, Apr. 2002, page 10 of 14 HD74LVC4245A Waveforms – 1 tr tf 90 % Vref1 Input VIH 90 % Vref1 10 % 10 % GND t PHL t PLH V OH Output Vref2 Vref2 V OL Symbol VCCA = 5±0.5 V VCCB = 2.7 to 3.6 V A to B B to A VIH 3.0 V 2.7 V Vref1 1.5 V 1.5 V Vref2 1.5 V 1/2 VCCA Rev.0, Apr. 2002, page 11 of 14 HD74LVC4245A Waveforms – 2 tf tr 90 % Output Control VIH 90 % Vref1 Vref1 10 % 10 % t ZL GND t LZ VOH Waveform - A Vref2 V OL + 0.3 V t ZH t HZ V OH - 0.3 V Waveform - B V OL V OH Vref2 GND Symbol VCCA = 5±0.5 V VCCB = 2.7 to 3.6 V OE to B OE to A VIH 3.0 V 3.0 V Vref1 1.5 V 1.5 V Vref2 1.5 V 1/2 VCCA Notes: 1. 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. 2. Waveform - A is for an output with internal conditions such that the output is low except when disabled by the output control. 3. Waveform - B is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The output are measured one at a time with one transition per measurement. Rev.0, Apr. 2002, page 12 of 14 HD74LVC4245A Package Dimensions As of January, 2002 Unit: mm 7.80 8.10 Max 13 1 12 4.40 24 0.65 1.0 0.13 M 6.40 ± 0.20 *Pd plating 0.10 *0.15 ± 0.05 1.10 Max 0.65 Max 0˚ – 8˚ 0.07 +0.03 –0.04 *0.20 ± 0.05 0.50 ± 0.10 Hitachi Code JEDEC JEITA Mass (reference value) TTP-24DBV — — 0.08 g Rev.0, Apr. 2002, page 13 of 14 HD74LVC4245A Disclaimer 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi’s sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products. Sales Offices Hitachi, Ltd. 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(Taipei Branch Office) 4/F, No. 167, Tun Hwa North Road Hung-Kuo Building Taipei (105), Taiwan Tel : <886>-(2)-2718-3666 Fax : <886>-(2)-2718-8180 Telex : 23222 HAS-TP URL : http://www.hitachi.com.tw Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower World Finance Centre, Harbour City, Canton Road Tsim Sha Tsui, Kowloon Hong Kong Tel : <852>-2735-9218 Fax : <852>-2730-0281 URL : http://semiconductor.hitachi.com.hk Copyright © Hitachi, Ltd., 2002. All rights reserved. Printed in Japan. Colophon 6.0 Rev.0, Apr. 2002, page 14 of 14