RD74LVC245B Octal Bidirectional Transceivers with 3-state Outputs REJ03D0386–0100 Rev.1.00 Aug. 26, 2004 Description The RD74LVC245B has eight buffers with three state outputs in a 20 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. 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 • • • • • • VCC = 1.65 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All input outputs VI/O (Max.) = 5.5 V (@VCC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±4 mA (@VCC = 1.65 V) ±8 mA (@VCC = 2.3 V) ±12 mA (@VCC = 2.7 V) ±24 mA (@VCC = 3.0 V to 5.5 V) • Ordering Information Part Name Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) RD74LVC245BFPEL SOP–20 pin (JEITA) FP–20DAV FP EL (2,000 pcs/reel) RD74LVC245BTELL TSSOP–20 pin TTP–20DAV T ELL (2,000 pcs/reel) Function Table Inputs OE DIR Operation L L B data to A bus L H A data to B bus H X Z H: High level L: Low level X: Immaterial Z: High impedance Rev.1.00 Aug. 26, 2004 page 1 of 7 RD74LVC245B Pin Arrangement 20 VCC DIR 1 A1 2 19 OE A2 3 18 B1 A3 4 17 B2 A4 5 16 B3 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 GND 10 11 B8 (Top view) Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC –0.5 to 7.0 V Input diode current IIK –50 mA Input voltage VI –0.5 to 7.0 V Output diode current IOK –50 mA 50 Input / output voltage VI/O –0.5 to VCC +0.5 IO ±50 VI = –0.5 V VO = –0.5 V VO = VCC +0.5 V V –0.5 to 7.0 Output current Conditions Output "H" or "L" Output "Z" or VCC:OFF mA VCC, GND current / pin ICC or IGND 100 mA Storage temperature Tstg –65 to 150 °C Note: 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. Rev.1.00 Aug. 26, 2004 page 2 of 7 RD74LVC245B Recommended Operating Conditions Item Symbol VCC Supply voltage Input / output voltage VI VO Operating temperature Output current Ta IOH IOL Input rise / fall time *1 tr, tf Ratings 1.5 to 5.5 1.65 to 5.5 0 to 5.5 0 to VCC 0 to 5.5 –40 to 85 –4 –8 –12 –24 4 8 12 24 20 10 Unit V Conditions Data hold At operation V Output "H" or "L" Output "Z" or VCC: OFF °C mA VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3.0 V to 5.5 V VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3.0 V to 5.5 V VCC = 1.65 V to 2.7 V VCC = 3.0 V to 5.5 V mA ns/V Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. Electrical Characteristics Item Input voltage Output voltage Input current Output leak current Off state output current Quiescent supply current Symbol VCC (V) VIH 1.65 to 1.95 2.3 to 2.7 2.7 to 3.6 4.5 to 5.5 1.65 to 1.95 VIL 2.3 to 2.7 2.7 to 3.6 4.5 to 5.5 VOH 1.65 to 5.5 1.65 2.3 2.7 3.0 3.0 4.5 VOL 1.65 to 5.5 1.65 2.3 2.7 3.0 4.5 IIN 0 to 5.5 IOFF 0 IOZ 2.7 to 5.5 ICC ∆ICC 2.7 to 3.6 2.7 to 5.5 2.7 to 3.6 Rev.1.00 Aug. 26, 2004 page 3 of 7 Ta = –40 to 85°C Min Max VCC×0.65 — 1.7 — 2.0 — VCC×0.7 — — VCC×0.35 — 0.7 — 0.8 — VCC×0.3 VCC –0.2 — 1.2 — 1.7 — 2.2 — 2.4 — 2.2 — 3.8 — — 0.2 — 0.45 — 0.7 — 0.4 — 0.55 — 0.55 — ±5.0 — ±5.0 — ±5.0 — — — ±5.0 5.0 500 Unit Test Conditions V V V IOH = –100 µA IOH = –4 mA IOH = –8 mA IOH = –12 mA IOH = –24 mA V IOL = 100 µA IOL = 4 mA IOL = 8 mA IOL = 12 mA IOL = 24 mA µA µA µA VIN = 5.5 V or GND VIN / VOUT = 5.5 V VIN = VCC, GND, VOUT = 5.5 V or GND µA VIN = 3.6 to 5.5 V VIN = VCC or GND VIN = one input at (VCC –0.6)V, other inputs at VCC or GND µA RD74LVC245B Switching Characteristics Ta = –40 to 85°C Item Propagation delay time Output enable time Output disable time Symbol tPLH tPHL tZH tZL tZH tLZ Between output pins skew tOSLH *1 tOSHL VCC (V) Min Typ Unit Max 1.8±0.15 1.0 — 12.7 2.5±0.2 1.0 — 8.3 2.7 1.0 — 7.3 3.3±0.3 1.5 — 6.3 5.0±0.5 1.0 — 4.8 1.8±0.15 1.0 — 15.3 2.5±0.2 1.0 — 10.5 2.7 1.0 — 9.5 3.3±0.3 1.5 — 8.5 5.0±0.5 1.0 — 7.0 1.8±0.15 1.0 — 17.0 2.5±0.2 1.0 — 9.5 2.7 1.0 — 8.5 3.3±0.3 1.7 — 7.5 5.0±0.5 1.0 — 6.5 1.8±0.15 — — — To (Input) (Output) ns A or B B or A ns OE A or B ns OE A or B ns 2.5±0.2 — — — 2.7 — — — 3.3±0.3 — — 1.0 5.0±0.5 — — 1.0 Input capacitance CIN 3.3 — 4.0 — pF Output capacitance CO 3.3 — 8.0 — pF Note: From 1. This parameter is characterized but not tested. tosLH = | tPLHm - tPLHn|, tosHL = | tPHLm - tPHLn| Operating Characteristics Ta = 25°C Item Power dissipation capacitance Symbol CPD Rev.1.00 Aug. 26, 2004 page 4 of 7 VCC (V) Min Typ Unit Max 1.8 42 2.5 43 3.3 45 5.0 47 pF Test Conditions f = 10 MHz RD74LVC245B Test Circuit VCC VCC Input Pulse Generator Zout = 50 Ω See Function Table OE Output A1 S1 RL S2 OPEN B1 VTT CL RL GND DIR Note: Symbol t PLH / t PHL OPEN S2 t ZH/ t HZ t ZL / t LZ GND VTT 1. CL includes probe and jig capacitance. Waveforms – 1 tr tf Input VIH 90 % Vref 90 % Vref 10 % 10 % GND t PHL t PLH VOH In phase output Vref Vref VOL Rev.1.00 Aug. 26, 2004 page 5 of 7 RD74LVC245B Waveforms – 2 tf OE tr 90 % Vref 10 % VIH 90 % Vref 10 % t ZL GND t LZ ≈ 1/2VTT Vref Waveform - A VOL + ∆ V t ZH Waveform - B VOL t HZ VOH VOH – ∆ V Vref ≈ GND INPUTS Notes: tr/tf Vref VTT CL RL ∆V VCC (V) VI VCC = 1.8±0.15 V VCC ≤ 2 ns 1/2 VCC 2× VCC 30 pF 1.0 kΩ 0.1.5 V VCC = 2.5±0.2 V VCC ≤ 2 ns 1/2 VCC 2× VCC 30 pF 500 Ω 0.15 V VCC = 2.7 V 2.7 V ≤ 2.5 ns 1.5 V 6V 50 pF 500 Ω 0.3 V VCC = 3.3±0.3 V 2.7 V ≤ 2.5 ns 1.5 V 6V 50 pF 500 Ω 0.3 V VCC = 5.0±0.5 V VCC 50 pF 500 Ω 0.3 V ≤ 2.5 ns 1/2 VCC 2× VCC 1. Input waveform: PRR = 10 MHz, duty cycle 50% 2. Waveform – A shows input conditions such that the output is "L" level when enable by the output control. 3. Waveform – B shows input conditions such that the output is "H" level when enable by the output control. Rev.1.00 Aug. 26, 2004 page 6 of 7 RD74LVC245B Package Dimensions As of January, 2003 Unit: mm 12.6 13 Max 11 1 10 5.5 20 *0.20 ± 0.05 2.20 Max 1.15 0˚ – 8 ˚ 0.10 ± 0.10 0.80 Max 0.20 7.80 +– 0.30 1.27 *0.40 ± 0.06 0.70 ± 0.20 0.15 0.12 M Package Code JEDEC JEITA Mass (reference value) *Ni/Pd/Au plating FP-20DAV — Conforms 0.31 g As of January, 2003 Unit: mm 6.50 6.80 Max 11 1 10 4.40 20 0.65 *0.20 ± 0.05 1.0 0.13 M 6.40 ± 0.20 *Ni/Pd/Au plating Rev.1.00 Aug. 26, 2004 page 7 of 7 0.07 +0.03 –0.04 0.10 *0.15 ± 0.05 1.10 Max 0.65 Max 0˚ – 8˚ 0.50 ± 0.10 Package Code JEDEC JEITA Mass (reference value) TTP-20DAV — — 0.07 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. 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