HD74LVC245A Octal Bidirectional Transceivers with 3-state Outputs REJ03D0353–0400Z (Previous ADE-205-111B (Z)) Rev.4.00 Jul. 27, 2004 Description The HD74LVC245A has eight buffers with three state outputs in a 20 pin package. When (T / R) is high, data flows from the A inputs to the B outputs, and when (T / R) 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 = 2.0 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 ±24 mA (@VCC = 3.0 V to 5.5 V) Ordering Information Part Name Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) HD74LVC245AFPEL HD74LVC245ATELL SOP–20 pin (JEITA) TSSOP–20 pin FP–20DAV TTP–20DAV FP T EL (2,000 pcs/reel) ELL (2,000 pcs/reel) Note: Please consult the sales office for the above package availability. Function Table Inputs OE T/R Operation L L H L H X B data to A bus A data to B bus Z H: L: X: Z: High level Low level Immaterial High impedance Rev.4.00 Jul. 27, 2004 page 1 of 6 HD74LVC245A Pin Arrangement T/R 1 20 VCC A0 2 19 OE A1 3 18 B0 A2 4 17 B1 A3 5 16 B2 A4 6 15 B3 A5 7 14 B4 A6 8 13 B5 A7 9 12 B6 GND 10 11 B7 (Top view) Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC Input diode current Input voltage Output diode current IIK VI IOK V mA V mA Input / output voltage VI/O Output current VCC, GND current / pin Storage temperature IO ICC or IGND Tstg –0.5 to 6.0 –50 –0.5 to 6.0 –50 50 –0.5 to VCC +0.5 –0.5 to 6.0 ±50 100 –65 to 150 V Conditions VI = –0.5 V T / R, OE VO = –0.5 V VO = VCC +0.5 V Output "H" or "L" Output "Z" or VCC:OFF mA mA °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.4.00 Jul. 27, 2004 page 2 of 6 HD74LVC245A Recommended Operating Conditions Item Symbol Ratings Unit Conditions Supply voltage VCC 1.5 to 5.5 V Data retention V V At operation T / R, OE Output "H" or "L" Output "Z" or VCC:OFF Input / output voltage VI VI/O Operating temperature Output current Ta IOH IOL Input rise / fall time *1 tr, tf 2.0 to 5.5 0 to 5.5 0 to VCC 0 to 5.5 –40 to 85 –12 –24*2 12 24*2 10 °C mA mA VCC = 2.7 V VCC = 3.0 V to 5.5 V VCC = 2.7 V VCC = 3.0 V to 5.5 V ns/V Notes: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. 2. Duty cycle ≤ 50% Electrical Characteristics Ta = –40 to 85°C Item Symbol VCC (V) Min Max Unit Input voltage VIH 2.7 to 3.6 4.5 to 5.5 2.7 to 3.6 4.5 to 5.5 2.7 to 5.5 2.7 3.0 3.0 4.5 2.7 to 5.5 2.7 3.0 4.5 0 to 5.5 2.7 to 5.5 2.0 VCC×0.7 — — VCC –0.2 2.2 2.4 2.2 3.8 — — — — — — — — 0.8 VCC×0.3 — — — — — 0.2 0.4 0.55 0.55 ±5.0 ±5.0 V 0 2.7 to 3.6 2.7 to 5.5 3.0 to 3.6 — — — — 20 ±10 10 500 VIL Output voltage VOH VOL Input current Off state output current IIN IOZ Output leak current Quiescent supply current IOFF ICC ∆ICC Rev.4.00 Jul. 27, 2004 page 3 of 6 Test Conditions V V IOH = –100 µA IOH = –12 mA IOH = –24 mA V IOL = 100 µA IOL = 12 mA IOL = 24 mA µA µA VIN = 5.5 V or GND VIN = VCC, GND, VOUT = 5.5 V or GND µA µA VIN / VOUT = 5.5 V VIN / VOUT = 3.6 to 5.5 V VIN = VOUT or GND VIN = one input at (VCC –0.6)V, other inputs at VCC or GND µA HD74LVC245A Switching Characteristics VCC (V) Item Symbol Propagation delay time tPLH tPHL Output enable time tZH tZL Output disable time tZH tLZ Between output pins skew tOSLH *1 tOSHL Input capacitance Output capacitance Note: CIN CO 2.7 3.3±0.3 5.0±0.5 2.7 3.3±0.3 5.0±0.5 2.7 3.3±0.3 5.0±0.5 2.7 3.3±0.3 5.0±0.5 2.7 2.7 Ta = –40 to 85°C Min Typ Max Unit From (Input) To (Output) — 1.5 — — 1.5 — — 1.5 — — — — — — — — — — — — — — — — — — 3.0 15.0 8.0 7.0 5.5 9.5 8.5 7.0 8.5 7.5 6.5 — 1.0 1.0 — — ns A or B B or A ns OE A or B ns OE A or B ns pF pF 1. This parameter is characterized but not tested. tosLH = | tPLHm - tPLHn|, tosHL = | tPHLm - tPHLn| Test Circuit VCC VCC Pulse Generator Zout = 50 Ω See Function Table OE Input Output A0 S1 500 Ω S2 OPEN See under table GND *1 B0 CL = 50 pF 450 Ω 50 Ω Scope T/R Symbol t PLH / t PHL t ZH/ t HZ t ZL / t LZ Note: 1. CL includes probe and jig capacitance. Rev.4.00 Jul. 27, 2004 page 4 of 6 S2 Vcc=2.7V, 3.3±0.3V Vcc=5.0±0.5V OPEN GND OPEN GND 6V 2×Vcc HD74LVC245A Waveforms – 1 tr tf 90 % Vref Input VIH 90 % Vref 10 % 10 % GND t PHL t PLH VOH Vref In phase output Vref VOL Waveforms – 2 tf OE tr 90 % Vref 10 % VIH 90 % Vref 10 % t LZ t ZL GND ≈V OH1 Vref Waveform - A t ZH Waveform - B VOL + 0.3 V t HZ VOH – 0.3 V Vref VOL VOH ≈V OL1 TEST VIH Vref VOH1 VOL1 Notes: Vcc=2.7V, 3.3±0.3V Vcc=5.0±0.5V 2.7 V Vcc 1.5 V 3V 50%Vcc GND GND Vcc 1. tr = 2.5 ns, tf = 2.5 ns 2. Input waveform : PRR = 10 MHz, duty cycle 50% 3. Waveform – A shows input conditions such that the output is "L" level when enable by the output control. 4. Waveform – B shows input conditions such that the output is "H" level when enable by the output control. Rev.4.00 Jul. 27, 2004 page 5 of 6 HD74LVC245A Package Dimensions As of January, 2002 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) *Pd plating FP–20DAV — Conforms 0.31 g As of January, 2002 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 *Pd plating Rev.4.00 Jul. 27, 2004 page 6 of 6 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. 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