HD74ALVCH162825 18-bit Buffers / Drivers with 3-state Outputs ADE-205-187A (Z) 2nd. Edition August 1997 Description The HD74ALVCH162825 can be used as two 9-bit buffers or one 18-bit buffer. It provides true data. The 3-state control gate is a 2-input AND gate with active low inputs so that if either output enable (OE1 or OE2) input is high, all nine affected outputs are in the high impedance state. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. All outputs, which are designed to sink up to 12 mA, include 26 Ω resistors to reduce overshoot and undershoot. Features • VCC = 2.3 V to 3.6 V • 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 ±12 mA (@VCC = 3.0 V) • Bus hold on data inputs eliminates the need for external pullup / pulldown resistors • All outputs have equivalent 26 Ω series resistors, so no external resistors are required. Function Table Inputs Output Y OE1 OE2 A L L L L L L H H H X X Z X H X Z H : High level L : Low level X : Immaterial Z : High impedance HD74ALVCH162825 Pin Arrangement 56 1OE2 1OE1 1 1Y1 2 55 1A1 1Y2 3 54 1A2 GND 4 53 GND 1Y3 5 52 1A3 1Y4 6 VCC 7 51 1A4 1Y5 8 49 1A5 1Y6 9 48 1A6 1Y7 10 47 1A7 GND 11 46 GND 1Y8 12 45 1A8 1Y9 13 44 1A9 GND 14 43 GND GND 15 42 GND 2Y1 16 41 2A1 2Y2 17 40 2A2 GND 18 39 GND 2Y3 19 38 2A3 2Y4 20 37 2A4 2Y5 21 36 2A5 VCC 22 35 VCC 2Y6 23 34 2A6 50 VCC 2Y7 24 33 2A7 GND 25 32 GND 2Y8 26 31 2A8 2Y9 27 30 2A9 2OE1 28 29 2OE2 (Top view) 2 HD74ALVCH162825 Absolute Maximum Ratings Item Symbol Ratings Unit VCC –0.5 to 4.6 V VI –0.5 to 4.6 V VO –0.5 to VCC +0.5 V Input clamp current I IK –50 mA VI < 0 Output clamp current I OK ±50 mA VO < 0 or VO > VCC Continuous output current IO ±50 mA VO = 0 to VCC VCC, GND current / pin I CC or IGND ±100 mA Maximum power dissipation at Ta = 55°C (in still air) *3 PT 1 W Storage temperature Tstg –65 to 150 °C Supply voltage Input voltage *1 Output voltage Notes: *1, 2 Conditions TSSOP Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. 1. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils. Recommended Operating Conditions Item Symbol Min Max Unit Supply voltage VCC 2.3 3.6 V Input voltage VI 0 VCC V Output voltage VO 0 VCC V High level output current I OH — –6 mA — –8 VCC = 2.7 V — –12 VCC = 3.0 V — 6 — 8 VCC = 2.7 V — 12 VCC = 3.0 V Low level output current I OL mA Input transition rise or fall rate ∆t / ∆v 0 10 ns / V Operating temperature Ta –40 85 °C Conditions VCC = 2.3 V VCC = 2.3 V Note: Unused control inputs must be held high or low to prevent them from floating. 3 HD74ALVCH162825 Logic Diagram 1OE1 1 1OE2 56 55 1A1 2 1Y1 To eight other channels 2OE1 28 2OE2 29 2A1 41 16 To eight other channels 4 2Y1 HD74ALVCH162825 Electrical Characteristics (Ta = –40 to 85°C) Item Symbol VCC (V) *1 Input voltage VIH VIL Output voltage VOH Min Max Unit 2.3 to 2.7 1.7 — V 2.7 to 3.6 2.0 — 2.3 to 2.7 — 0.7 2.7 to 3.6 — 0.8 I OH = –100 µA Min to Max VCC–0.2 — 2.3 1.9 — I OH = –4 mA, VIH = 1.7 V 2.3 1.7 — I OH = –6 mA, VIH = 1.7 V 3.0 2.4 — I OH = –6 mA, VIH = 2.0 V 2.7 2.0 — I OH = –8 mA, VIH = 2.0 V 3.0 2.0 — I OH = –12 mA, VIH = 2.0 V Min to Max — 0.2 I OL = 100 µA 2.3 — 0.4 I OL = 4 mA, VIL = 0.7 V 2.3 — 0.55 I OL = 6 mA, VIL = 0.7 V 3.0 — 0.55 I OL = 6 mA, VIL = 0.8 V 2.7 — 0.6 I OL = 8 mA, VIL = 0.8 V 3.0 — 0.8 I OL = 12 mA, VIL = 0.8 V I IN 3.6 — ±5 I IN (hold) 2.3 45 — VIN = 0.7 V 2.3 –45 — VIN = 1.7 V 3.0 75 — VIN = 0.8 V 3.0 –75 — VIN = 2.0 V 3.6 — ±500 VIN = 0 to 3.6 V I OZ 3.6 — ±10 µA VOUT = VCC or GND Quiescent supply current I CC 3.6 — 40 µA VIN = VCC or GND 3.0 to 3.6 — 750 µA VIN = one input at (VCC–0.6) V, other inputs at V CC or GND VOL Input current Off state output current *2 ∆I CC V Test Conditions µA VIN = VCC or GND Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating conditions. 2. For I/O ports, the parameter I OZ includes the input leakage current. 5 HD74ALVCH162825 Switching Characteristics (Ta = –40 to 85°C) Item Symbol VCC (V) Min Typ Max Unit FROM (Input) TO (Output) Propagation delay time t PLH 2.5±0.2 1.0 — 5.0 ns A Y t PHL 2.7 — — 4.4 3.3±0.3 1.0 — 3.8 t ZH 2.5±0.2 1.0 — 6.8 ns OE Y t ZL 2.7 — — 6.2 3.3±0.3 1.0 — 5.1 t HZ 2.5±0.2 1.9 — 6.1 ns OE Y t LZ 2.7 — — 5.2 3.3±0.3 1.3 — 4.7 3.3 — 3.5 — pF Control inputs 3.3 — 6.0 — 3.3 — 7.0 — Output enable time Output disable time Input capacitance Output capacitance CIN CO Data inputs pF Outputs Test Circuit See under table 500 Ω S1 OPEN GND *1 C L = 50 pF 500 Ω Load Circuit for Outputs Symbol t PLH / t PHL t ZH/ t HZ t ZL / t LZ Note: 6 1. Vcc=2.5±0.2V Vcc=2.7V, 3.3±0.3V OPEN OPEN GND GND 4.6 V 6.0 V CL includes probe and jig capacitance. HD74ALVCH162825 Waveforms – 1 tf tr 90 % Input VIH 90 % Vref Vref 10 % 10 % GND t PHL t PLH VOH Output Vref Vref VOL Waveforms – 2 tf tr VIH 90 % 90 % Vref Output Control Vref 10 % t ZL 10 % GND t LZ ≈VOH1 Vref Waveform - A t ZH Waveform - B VOL + 0.3 V t HZ VOH – 0.3 V Vref VOL VOH ≈VOL1 TEST VIH Vref VOH1 VOL1 Notes: 1. 2. 3. 4. Vcc=2.5±0.2V Vcc=2.7V, 3.3±0.3V 2.3 V 2.7 V 1.2 V 2.3 V 1.5 V 3.0 V GND GND 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. Waveform–A is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform–B is for an output with internal conditions such that the output is high except when disabled by the output control. The output are measured one at a time with one transition per measurement. 7 HD74ALVCH162825 Package Dimensions Unit : mm +0.3 14.00 –0.1 29 6.10 +0.3 –0.1 56 1 0.50 28 0.20 +0.1 –0.05 0.08 M 8.10 ± 0.3 0.40 Max 0.15 ± 0.05 0.10 0.05 ± 0.05 1.2 Max 10° Max 0.50 ± 0.1 Hitachi code EIAJ code JEDEC code 8 TTP-56D — — Cautions 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. 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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. Hitachi, Ltd. Semiconductor & Integrated Circuits. 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