HD74LVCZ245A Octal Bidirectional Transceivers with 3–state Outputs REJ03D0372–0300 (Previous ADE-205-228A (Z)) Rev.3.00 Aug. 18, 2004 Description The HD74LVCZ245A 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. When VCC is between 0 and 1.5 V, the device is in the high impedance state during power up or power down. Low voltage and high-speed operation is suitable at battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation. Features • • • • • • • • • VCC = 2.7 to 5.5 V All inputs VIH (Max) = 5.5 V (@VCC = 0 to 5.5 V) All inputs / 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 impedance state during power up and power down Power off disables outputs, permitting live insertion High output current ±24 mA (@VCC = 3.0 to 5.5 V) Ordering Information Part Name Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity) HD74LVCZ245AFPEL HD74LVCZ245ATELL SOP–20 pin (JEITA) TSSOP–20 pin FP–20DAV TTP–20DAV FP T EL (2,000 pcs/reel) ELL (2,000 pcs/reel) 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: High level L: Low level X: Immaterial Z: High impedance Rev.3.00 Aug. 18, 2004 page 1 of 8 HD74LVCZ245A 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 voltage Input / output voltage VI VI/O V V V Input diode current Output diode current Output current VCC, GND current Storage temperature IIK IOK IO ICC or IGND Tstg –0.5 to 7.0 –0.5 to 7.0 –0.5 to 7.0 –0.5 to VCC+0.5 –50 –50 ±50 ±100 –65 to 150 mA mA mA mA °C Conditions Output “Z” or VCC : OFF Output “H” or “L” VI < 0 VO < 0 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.3.00 Aug. 18, 2004 page 2 of 8 HD74LVCZ245A Recommended Operating Conditions Item Symbol Ratings Unit Conditions Supply voltage Input voltage Input / output voltage VCC VI VI/O V V V At operation Output current IOH 2.7 to 5.5 0 to 5.5 0 to 5.5 0 to VCC –12 –24 *1 12 24 *1 0 to 6 –40 to +85 IOL Input rise / fall time Operating temperature Note: tr, tf Ta Output “Z” or VCC : OFF Output “H” or “L” VCC = 2.7 V VCC = 3.0 to 5.5 V VCC = 2.7 V VCC = 3.0 to 5.5 V mA mA ns / V °C 1. Duty cycle ≤ 50% Logic Diagram T/R 1 19 A0 2 18 To seven other channels Rev.3.00 Aug. 18, 2004 page 3 of 8 OE B0 HD74LVCZ245A Electrical Characteristics (Ta = –40 to 85°C) Item Symbol VCC (V) Min Typ Max Unit Input voltage VIH 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 ±5 ±5 ±5 ±5 225 350 500 V ∆ICC 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 0 to 1.5 1.5 to 0 0 2.7 to 3.6 2.7 to 5.5 2.7 to 3.6 CIN CI/O 3.3 3.3 — — 3.4 8.5 — — VIL Output voltage VOH VOL Input current Off state output current Output leak current Quiescent supply current Input capacitance Input / output capacitance Note: IIN IOZ IOZPU IOZPD IOFF ICC 1. This applies in the disabled state only. Rev.3.00 Aug. 18, 2004 page 4 of 8 Test Conditions V V IOH = –100 µA IOH = –12 mA IOH = –24 mA IOL = 100 µA IOL = 12 mA IOL = 24 mA µA µA VIN = 0 to 5.5 V VOUT = 0 to 5.5 V VOUT = 0.5 to 5.5 V, Output enable = don’t care µA µA VIN or VO = 5.5 V VIN = 3.6 to 5.5 V *1, IO = 0 VIN = VCC or GND µA VIN = one input at (VCC–0.6) V, other inputs at VCC or GND pF pF VIN = VCC or GND VOUT = VCC or GND HD74LVCZ245A Switching Characteristics (Ta = –40 to 85°C) TO (Output) Item Symbol VCC (V) Min Typ Max Unit FROM (Input) Propagation delay time tPLH tPHL ns OE A or B tHZ tLZ 7.3 6.3 4.8 9.5 8.5 7.0 8.5 7.5 6.5 — 1.0 1.0 B or A Output disable time — — — — — — — — — — — — A or B tZH tZL — 1.5 — — 1.5 — — 1.7 — — — — ns Output enable time 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 ns OE A or B Between output pin skew *1 tOSLH tOSHL Note: ns 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 B0 CL = 50 pF T/R S2 450 Ω OPEN See under table *1 GND 50 Ω Scope S2 Symbol Note: 1. C L includes probe and jig capacitance. Rev.3.00 Aug. 18, 2004 page 5 of 8 Vcc=2.7V, 3.3±0.3V Vcc=5.0±0.5V t PLH / t PHL OPEN OPEN t ZH/ t HZ t ZL / t LZ GND 6V GND 2×VCC HD74LVCZ245A • Waveforms – 1 tr tf VIH 90 % Vref 90 % Input Vref 10 % 10 % GND t PHL t PLH VOH In phase output Vref Vref VOL • Waveforms – 2 tf OE tr 90 % Vref VIH 90 % Vref 10 % t ZL 10 % GND t LZ ≈VOH1 Waveform – A Vref t ZH Waveform – B Vref VOL + 0.3 V VOL t HZ VOH VOH – 0.3 V ≈VOL1 TEST VIH Vref Vcc=2.7V 3.3±0.3V 2.7 V 1.5 V Vcc=5.0±0.5V VCC VOH1 3V 50%VCC VCC VOL1 GND GND Notes: 1. Input waveform : PRR = 10 MHz, duty cycle 50%, t r = 2.5 ns, t f = 2.5 ns 2. Waveform – A shows input conditions such that the output is “L” level when enabled by the output control. 3. Waveform – B shows input conditions such that the output is “H” level when enabled by the output control. Rev.3.00 Aug. 18, 2004 page 6 of 8 HD74LVCZ245A Power up / down Characteristics 4.0 Ta = 25˚C Output enable = “L” VOUT (V) 3.0 2.0 Disable area Enable area 1.0 0 0 1.0 2.0 VCC (V) Rev.3.00 Aug. 18, 2004 page 7 of 8 3.0 4.0 HD74LVCZ245A 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.3.00 Aug. 18, 2004 page 8 of 8 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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