HD74LVC4245A Octal Bus Transceiver and 3.3 V to 5 V shifters with 3-state Outputs REJ03D0378–0100 (Previous ADE-205-683 (Z)) Rev.1.00 Aug. 20, 2004 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) • Ordering Information Part Name Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) HD74LVC4245ATEL TSSOP–24 pin TTP–24DBV T EL (1,000 pcs/reel) Rev.1.00 Aug. 20, 2004 page 1 of 10 HD74LVC4245A Function Table Inputs OE DIR Operation L L H L H X B data to A bus A data to B bus Z H: High level L: Low level X: Immaterial Z: 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.1.00 Aug. 20, 2004 page 2 of 10 HD74LVC4245A Absolute Maximum Ratings (1) For VCCA Item Symbol Ratings Unit Supply voltage Input voltage*1 Input / output voltage VCCA VI VI/O V V V Input diode current Output diode current IIK IOK Output current VCCA, GND current IO ICCA or IGND PT –0.5 to 6.0 –0.5 to 6.0 –0.5 to VCCA+0.5 –0.5 to 6.0 –50 –50 50 ±50 100 862 mA mA mW Tstg –65 to 150 °C Maximum power dissipation *2 at Ta = 25°C (in still air) Storage temperature Notes: mA mA Conditions DIR, OE A port output “H” or “L” A port output “Z” or VCCA : OFF VI < 0 VO < 0 VO > VCCA+0.5 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 Symbol Ratings Unit Supply voltage Input / output voltage*1 VCCB VI/O V V Input diode current Output diode current IIK IOK Output current VCCB,GND current IO ICCB or IGND PT –0.5 to 4.6 –0.5 to VCCB+0.5 –0.5 to 4.6 –50 –50 50 ±50 100 862 mA mA mW Tstg –65 to 150 °C Maximum power dissipation *2 at Ta = 25°C (in still air) Storage temperature Notes: mA mA Conditions B port output “H” or “L” B port output “Z” or VCCB : OFF VI < 0 VO < 0 VO > VCCB+0.5 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.1.00 Aug. 20, 2004 page 3 of 10 HD74LVC4245A Recommended Operating Conditions (1) For VCCA Item Symbol Ratings Unit Supply voltage Input / output voltage VCCA VI VI/O V V Output current IOH IOL ∆t / ∆v Ta 4.5 to 5.5 0 to 5.5 0 to VCCA 0 to 5.5 –24 24 10 –40 to 85 Input transition rise or fall time Operating temperature Conditions DIR, OE A port output “H” or “L” A port output “Z” or VCCA : OFF mA ns / V °C Note: Unused or floating inputs must be held high or low. (2) For VCCB Item Symbol Ratings Unit Supply voltage Input / output voltage VCCB VI/O V V Output current IOH 2.7 to 3.6 0 to VCCB 0 to 3.6 –12 –24 12 24 10 –40 to 85 IOL Input transition rise or fall time Operating temperature ∆t / ∆v Ta Conditions B port output “H” or “L” B port output “Z” or VCCB : OFF VCCB = 2.7 V VCCB = 3.0 to 3.6 V VCCB = 2.7 V VCCB = 3.0 to 3.6 V mA ns / V °C Note: Unused or floating inputs must be held high or low. Block Diagram DIR 2 22 A1 21 To seven other channels Rev.1.00 Aug. 20, 2004 page 4 of 10 OE 3 B1 HD74LVC4245A Electrical Characteristics Item Input voltage Output voltage Min 2 VCCA–0.2 3.7 4.7 VCCB–0.2 2.2 2.4 2 Max 0.8 0.2 0.55 0.55 0.2 0.4 0.55 ±1 ±5 ±5 20 Unit V IIN IOZA IOZB IOFF VCCB (V) 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 3.0 3.0 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 2.7 3.0 2.7 to 3.6 2.7 to 3.6 3.6 0 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 µA A to B, control input =VCCA or GND An = VCCA or GND, IO (B port) = 0 ∆ICCA 5.5 2.7 to 3.6 1.5 mA ∆ICCB 4.5 to 5.5 2.7 to 3.6 0.5 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 VOHB VOLA VOLB Input current Off state output current Output leak current Quiescent supply current Increase in ICC per input *1 Notes: (Ta = –40 to 85°C) Test Conditions VCCA (V) 4.5 to 5.5 4.5 to 5.5 4.5 to 5.5 4.5 5.5 4.5 to 5.5 4.5 to 5.5 4.5 to 5.5 4.5 to 5.5 4.5 to 5.5 4.5 5.5 4.5 to 5.5 4.5 to 5.5 4.5 to 5.5 5.5 5.5 4.5 to 5.5 0 Symbol VIH VIL VOHA V IOH = –100 µA IOH = –24 mA V IOH = –100 µA IOH = –12 mA V V µA µA µA IOH = –24 mA IOL = 100 µA IOL = 24 mA IOL = 100 µA IOL = 12 mA IOL = 24 mA Control input A port, VO = VCCA or GND B port, VO = VCCB or GND A port, VI/O = 5.5 V B port, VI/O = 3.6 V 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.1.00 Aug. 20, 2004 page 5 of 10 HD74LVC4245A Capacitance (Ta = 25°C) Item Symbol VCCA (V) VCCB (V) Min Typ Max Unit Test Conditions Control Input capacitance Input/output capacitance CIN CI/O 5 5 3.3 3.3 5 11 pF pF VI = VCCA or GND 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 Typ Max Unit Test conditions From(Input) To(Output) Propagation delay time tPLH tPHL tPLH tPHL 1 1 1 1 1 1 1 1 1 1 1 1 6.7 6.3 5 6.1 8.1 9 9.8 8.8 5.8 7 7.8 7.7 ns CL = 50 pF RL = 500 Ω A B B A OE A OE B OE A OE B Output enable time Output disable time tZH tZL tZH tZL tHZ tLZ tHZ tLZ ns ns CL = 50 pF RL = 500 Ω CL = 50 pF RL = 500 Ω Operating Characteristics Item Symbol VCCA (V) VCCB (V) Min Typ Max Unit Test Conditions Power dissipation capacitance CPD 5.0 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.1.00 Aug. 20, 2004 page 6 of 10 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.1.00 Aug. 20, 2004 page 7 of 10 HD74LVC4245A Waveforms – 1 tf tr Vref1 Input VIH 90 % 90 % Vref1 10 % 10 % GND t PHL t PLH V OH Output Vref2 Vref2 V OL Symbol Rev.1.00 Aug. 20, 2004 page 8 of 10 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 HD74LVC4245A Waveforms – 2 tr tf Output Control VIH 90 % 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.1.00 Aug. 20, 2004 page 9 of 10 HD74LVC4245A Package Dimensions As of July, 2001 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 Rev.1.00 Aug. 20, 2004 page 10 of 10 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 Package Code JEDEC JEITA Mass (reference value) TTP–24DBV — — 0.08 g Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. 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