HD74LV245A Octal Bus Transceivers with 3-state Outputs ADE-205-247 (Z) 1st Edition March 1999 Description The HD74LV245A has eight buffers with three-state outputs in a 20-pin package. When DIR is high, data is transferred from the A inputs to the B outputs, and when DIR is low, data is transferred from the B inputs to the A outputs. The A and B buses are separated by making the enable input (OE) high level. Lowvoltage operation is suitable for battery-powered products (e.g., notebook computers), and the low power consumption extends the battery life. Features • • • • • • VCC = 2.0 V to 5.5 V operation All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max.) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C) Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs OE DIR Operation L L B data to A bus L H A data to B bus H X Isolation Note: H: High level L: Low level X: Immaterial HD74LV245A Pin Arrangement DIR 1 20 VCC 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) 2 HD74LV245A Absolute Maximum Ratings Item Supply voltage range Input voltage range* 1 1, Output voltage range* * 2 Symbol Ratings Unit VCC –0.5 to 7.0 V VI –0.5 to 7.0 V VO –0.5 to VCC + 0.5 V –0.5 to 7.0 Conditions Output: H or L VCC: OFF or Output: Z Input clamp current I IK –20 mA VI < 0 Output clamp current I OK ±50 mA VO < 0 or VO > VCC Continuous output current IO ±35 mA VO = 0 to VCC Continuous current through VCC or GND I CC or IGND ±70 mA Maximum power dissipation at Ta = 25°C (in still air)*3 PT 835 mW 757 Storage temperature Tstg –65 to 150 SOP TSSOP °C Notes: 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. This value is limited to 5.5 V maximum. 3. The data above are measured by ∆V BE method mounting on glass epoxy board (40 × 40 × 1.6 mm) with 10% of wiring density. 3 HD74LV245A Recommended Operating Conditions Item Symbol Min Max Unit Supply voltage range VCC 2.0 5.5 V Input voltage range VI 0 5.5 V Output voltage range VO 0 VCC V 0 5.5 — –50 µA VCC = 2.0 V — –2 mA VCC = 2.3 to 2.7 V — –8 VCC = 3.0 to 3.6 V — –16 VCC = 4.5 to 5.5 V — 50 µA VCC = 2.0 V — 2 mA VCC = 2.3 to 2.7 V — 8 VCC = 3.0 to 3.6 V — 16 VCC = 4.5 to 5.5 V 0 200 0 100 VCC = 3.0 to 3.6 V 0 20 VCC = 4.5 to 5.5 V –40 85 Output current I OH I OL Input transition rise or fall rate Operating free-air temperature ∆t /∆v Ta Note: Unused or floating inputs must be held high or low. 4 Conditions Output: H or L High impedance state ns/V °C VCC = 2.3 to 2.7 V HD74LV245A Logic Diagram DIR 1 19 A1 OE 2 18 B1 Other seven channels 5 HD74LV245A DC Electrical Characteristics • Ta = –40 to 85°C Item Symbol VCC (V)*1 Min Typ Max Unit Input voltage VIH 2.0 1.5 — — V 2.3 to 2.7 VCC × 0.7 — — 3.0 to 3.6 VCC × 0.7 — — 4.5 to 5.5 VCC × 0.7 — — 2.0 — — 0.5 2.3 to 2.7 — — VCC × 0.3 3.0 to 3.6 — — VCC × 0.3 4.5 to 5.5 — — VCC × 0.3 Min to Max VCC –0.1 — — 2.3 2.0 — — IOH = –2 mA 3.0 2.48 — — IOH = –8 mA 4.5 3.8 — — IOH = –16 mA Min to Max — — 0.1 IOL = 50 µA 2.3 — — 0.4 IOL = 2 mA 3.0 — — 0.44 IOL = 8 mA 4.5 — — 0.55 IOL = 16 mA 0 to 5.5 — — ±1 µA VIN = 5.5 V or GND 5.5 — — ±5 µA VO = VCC or GND VIL Output voltage VOH VOL Input current IIN 2 V Test Conditions IOH = –50 µA Off-state output current IOZ* Quiescent supply current ICC 5.5 — — 20 µA VIN = VCC or GND, IO = 0 Output leakage current IOFF 0 — — 5 µA VO = 5.5 V Input capacitance CIN 3.3 — 3.0 — pF VI = VCC or GND Output capacitance CO 3.3 — 5.5 — pF VO = 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. 6 HD74LV245A Switching Characteristics • VCC = 2.5 ± 0.2 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 8.3 13.0 1.0 15.0 ns CL = 15 pF A or B B or A — 11.2 15.9 1.0 18.0 — 11.8 19.9 1.0 22.0 OE A or B — 14.1 22.7 1.0 26.0 — 11.8 18.1 1.0 20.0 OE A or B — 17.6 23.1 1.0 25.0 Enable time Disable time tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF • VCC = 3.3 ± 0.3 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 5.9 8.4 1.0 10.0 ns CL = 15 pF A or B B or A — 7.9 11.9 1.0 13.5 — 8.2 13.2 1.0 15.5 OE A or B — 9.9 16.7 1.0 19.0 — 9.6 16.5 1.0 19.5 OE A or B — 13.9 19.8 1.0 22.0 Enable time Disable time tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF 7 HD74LV245A Switching Characteristics (cont) • VCC = 5.0 ± 0.5 V Ta = 25°C Ta = –40 to 85°C Item Symbol Min Typ Max Min Max Unit Test Conditions FROM (Input) TO (Output) Propagation delay time tPLH tPHL — 4.3 5.5 1.0 6.5 ns CL = 15 pF A or B B or A — 5.6 7.5 1.0 8.5 — 5.7 8.5 1.0 10.0 OE A or B — 7.0 10.6 1.0 12.0 — 7.8 12.8 1.0 14.2 OE A or B — 10.9 14.7 1.0 16.0 Enable time Disable time 8 tZH tZL tHZ tLZ CL = 50 pF ns CL = 15 pF CL = 50 pF ns CL = 15 pF CL = 50 pF HD74LV245A Output-skew Characteristics • CL = 50 pF Ta = 25°C Ta = –40 to 85°C Item Symbol VCC (V) Min Max Min Max Unit Output skew t sk (O) 2.3 to 2.7 — 2.0 — 2.0 ns 3.0 to 3.6 — 1.5 — 1.5 4.5 to 5.5 — 1.0 — 1.0 Note: Skew between any outputs of the me package switching in the same direction. This parameter is warranted but not production tested. Operating Characteristics • CL = 50 pF Ta = 25°C Item Symbol VCC (V) Min Typ Max Unit Test Conditions Power dissipation capacitance CPD 3.3 — 20.0 — pF f = 10 MHz 5.0 — 25.0 — Noise Characteristics • CL = 50 pF Ta = 25°C Item Symbol VCC (V) Min Typ Max Unit Quiet output, maximum dynamic VOL VOL (P) 3.3 — 0.5 0.8 V Quiet output, minimum dynamic VOL VOL (V) 3.3 — –0.4 –0.8 Quiet output, minimum dynamic VOH VOH (V) 3.3 — 2.9 — High-level dynamic input voltage VIH (D) 3.3 2.31 — — Low level dynamic inout voltage VIL (D) 3.3 — — 0.99 Test Conditions V 9 HD74LV245A Test Circuit VCC VCC Input Pulse generator Zout = 50 Ω See Function Table OE Output A1 S1 1 kΩ S2 B1 OPEN GND CL = 15 or 50 pF VCC DIR Notes : 1. C L includes the probe and jig capacitance. 2. A2–B2 to A8–B8 are idential to above load circuit. 3. S1 : Input–Output change switch. 10 TEST t PLH /tPHL S2 OPEN t ZH/tHZ t ZL /tLZ GND VCC HD74LV245A • Waveform – 1 tr Input 10% tf 90% 50% VCC VCC 90% 50% VCC 10% t PHL t PLH 0V VOH In phase output 50% VCC 50% VCC VOL • Wareform – 2 tf tr 90% OE 50% VCC 10% t ZL VCC 90% 50% VCC 10% 0V t LZ VCC 50% VCC Waveform – A t ZH Waveform – B VOL + 0.3 V t HZ 50% VCC VOH – 0.3 V VOL VOH 0V Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 3 ns, tf ≤ 3 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. 11 HD74LV245A Package Dimensions Unit: mm 12.6 13 Max 11 1 10 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.80 Max *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 5.5 20 0.20 7.80 +– 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension 12 Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DA — Conforms 0.31 g HD74LV245A Unit: mm 12.8 13.2 Max 11 1 10 0.20 ± 0.10 0.935 Max 1.27 *0.42 ± 0.08 0.40 ± 0.06 *0.27 ± 0.05 0.25 ± 0.04 2.65 Max 7.50 20 0.25 10.40 +– 0.40 1.45 0° – 8° 0.57 0.70 +– 0.30 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DB Conforms — 0.52 g 13 HD74LV245A Unit: mm 6.50 6.80 Max 11 1 10 4.40 20 0.65 +0.08 –0.07 *0.22 0.20 ± 0.06 1.0 0.13 M 6.40 ± 0.20 *Dimension including the plating thickness Base material dimension 14 0.07 +0.03 –0.04 0.10 *0.17 ± 0.05 0.15 ± 0.04 1.10 Max 0.65 Max 0° – 8° 0.50 ± 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-20DA — — 0.07 g Cautions 1. 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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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