HD74LVC16245A 16-bit Bus Transceivers with 3-state Outputs ADE-205-120B(Z) 3rd Edition December 1996 Description The HD74LVC16245A has sixteen two direction buffers, for the fittest at two direction bus lines with three state outputs. A direction control input, DIR. When DIR is high, data flows from the A inputs to the B outputs. When DIR is high, data flows from the B inputs to the A outputs. When enable inputs (G) is high, disables both A and B ports by placing then in a high impedance. 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 outputs VOUT (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) Function Table Inputs G DIR Operation L L B data to A bus L H A data to B bus H X Z H: L: X: Z: High level Low level Immaterial High impedance HD74LVC16245A Pin Arrangement 1DIR 1 48 1G 1B1 2 47 1A1 1B2 3 46 1A2 GND 4 45 GND 1B3 5 44 1A3 1B4 6 43 1A4 VCC 7 42 VCC 1B5 8 41 1A5 1B6 9 40 1A6 GND 10 39 GND 1B7 11 38 1A7 1B8 12 37 1A8 2B1 13 36 2A1 2B2 14 35 2A2 GND 15 34 GND 2B3 16 33 2A3 2B4 17 32 2A4 VCC 18 31 VCC 2B5 19 30 2A5 2B6 20 29 2A6 GND 21 28 GND 2B7 22 27 2A7 2B8 23 26 2A8 2DIR 24 25 2G (Top view) 2 HD74LVC16245A Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC –0.5 to 6.0 V Input diode current I IK –50 mA VI = –0.5 V Input voltage VI –0.5 to 6.0 V G, DIR Output diode current I OK –50 mA VO = –0.5 V 50 mA VO = VCC+0.5 V –0.5 to VCC +0.5 V Output "H" or "L" –0.5 to 6.0 V Output "Z" or VCC:OFF Input / Output voltage VI/O Output current IO ±50 mA VCC, GND current / pin I CC or IGND 100 mA Storage temperature Tstg –65 to +150 °C Conditions 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. Recommended Operating Conditions Item Symbol Ratings Unit Conditions Supply voltage VCC 1.5 to 5.5 V Data retention 2.0 to 5.5 V At operation VI 0 to 5.5 V G, DIR VI/O 0 to V CC V Output "H" or "L" 0 to 5.5 V Output "Z" or VCC:OFF Input / output voltage Operating temperature Ta –40 to 85 °C Output current I OH –12 mA VCC = 2.7 V –24 mA VCC = 3.0 V to 5.5 V 12 mA VCC = 2.7 V 24 mA VCC = 3.0 V to 5.5 V 10 ns/V *2 I OL *2 Input rise / fall time *1 t r, t f Notes: 1. This item guarantees maximum limit when one input switches. Waveform : Refer to test circuit of switching characteristics. 2. duty cycle ≤ 50% 3 HD74LVC16245A Electrical Characteristics Ta = –40 to 85°C Item Symbol VCC (V) Min Max Unit Test Conditions Input voltage VIH 2.7 to 3.6 2.0 — V 4.5 to 5.5 VCC×0.7 — V 2.7 to 3.6 — 0.8 V 4.5 to 5.5 — VCC ×0.3 V 2.7 to 5.5 VCC–0.2 — V I OH = –100 µA 2.7 2.2 — V I OH = –12 mA 3.0 2.4 — V 3.0 2.2 — V 4.5 3.8 — V 2.7 to 5.5 — 0.2 V I OL = 100 µA 2.7 — 0.4 V I OL = 12 mA 3.0 — 0.55 V I OL = 24 mA 4.5 — 0.55 V VIL Output voltage VOH VOL I OH = –24 mA Input current I IN 0 to 5.5 — ±5.0 µA VIN = 5.5 V or GND Off state output current I OZ 2.7 to 5.5 — ±5.0 µA VIN = VCC, GND VOUT = 5.5 V or GND Output leak current I OFF 0 — 20 µA VIN / V OUT = 5.5 V Quiescent supply current I CC 2.7 to 3.6 — ±20 µA VIN / V OUT = 3.6 to 5.5 V 2.7 to 5.5 — 20 µA VIN = VCC or GND 3.0 to 3.6 — 500 µA VIN = one input at(VCC–0.6)V, other inputs at V CC or GND ∆I CC 4 HD74LVC16245A Switching Characteristics Ta = –40 to 85°C Item Symbol VCC (V) Min Typ Max Unit From (Input) To (Output) Propagation delay time t PLH 2.7 — — 5.8 ns A or B B or A t PHL 3.3±0.3 1.5 — 5.2 ns 5.0±0.5 — — 4.5 ns t ZH 2.7 — — 8.0 ns G B or A t ZL 3.3±0.3 1.5 — 7.2 ns 5.0±0.5 — — 6.0 ns t HZ 2.7 — — 8.0 ns G B or A t LZ 3.3±0.3 1.5 — 7.2 ns 5.0±0.5 — — 6.0 ns t OSLH 2.7 — — — ns t OSHL 3.3±0.3 — — 1.0 ns 5.0±0.5 — — 1.0 ns Output enable time Output disable time Between output pins skew *1 Input capacitance CIN 2.7 — 3.0 — pF Output capacitance CO 2.7 — 15.0 — pF Note: 1. This parameter is characterized but not tested. tosLH = | tPLHm – t PLHn |, tosHL = | tPHLm – t PHLn | 5 HD74LVC16245A Test Circuit VCC VCC G Pulse generator Zout = 50 Ω Output See Function Table Input A1 S1 500 Ω S2 B1 CL = 50 pF OPEN *1 See under table 450 Ω GND 50 Ω Scope DIR Symbol t PLH / t PHL t ZH/ t HZ t ZL / t LZ Notes: 1. 2. 3. S2 Vcc=2.7V, 3.3±0.3V Vcc=5.0±0.5V OPEN GND OPEN GND 6V 2×Vcc CL includes probe and jig capacitance. A2-B2 to A8-B8 are identical to above load circuit. S1 : Input-Output change switch. Waveforms – 1 tr tf 90 % Vref Input VIH 90 % Vref 10 % 10 % GND t PHL t PLH VOH Output Vref Vref VOL Notes: 6 1. 2. t r = 2.5 ns, tf = 2.5 ns Input waveform : PRR = 10 MHz, duty cycle 50% HD74LVC16245A Waveforms – 2 tf tr 90 % Vref 10 % G VIH 90 % Vref 10 % t ZL GND t LZ ≈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: 1. 2. 3. 4. 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 t r = 2.5 ns, tf = 2.5 ns Input waveform : PRR = 10 MHz, duty cycle 50% Waveform – A shows input conditions such that the output is "L" level when enable by the output control. Waveform – B shows input conditions such that the output is "H" level when enable by the output control. 7 Unit: mm 12.5 12.7 Max 25 6.10 48 1 *0.21 +0.04 –0.05 0.19 +0.03 –0.05 0.50 24 0.08 M 1.0 8.10 ± 0.20 0.65 Max *Dimension including the plating thickness Base material dimension 0.13 ± 0.05 0.10 *0.17 ± 0.05 0.15 ± 0.04 1.20 Max 0° – 8° 0.50 ± 0.1 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-48DB — — 0.20 g 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. 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