INTEGRATED CIRCUITS 74LVC244A/74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State)title Product specification Supersedes data of 1996 Sep 06 IC24 Data Handbook 1998 May 20 Philips Semiconductors Product specification Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) 74LVC244A 74LVCH244A FEATURES DESCRIPTION • 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic • Supply voltage range of 2.7V to 3.6V • Complies with JEDEC standard no. 8-1A • CMOS low power consumption • Direct interface with TTL levels • High impedance when VCC = 0V • Bushold on all data inputs (74LVCH244A only) The 74LVC244A/74LVCH244A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3V or 5V devices. In 3-State operation, outputs can handle 5V. These features allow the use of these devices as translators in a mixed 3.3V/5V environment. The 74LVC244A/74LVCH244A is an octal non-inverting buffer/line driver with 3-State outputs. The 3-State outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high impedance OFF-state. Schmitt-trigger action at all inputs makes the circuit highly tolerant for slower input rise and fall times. The ’244’ is functionally identical to the ’240’, but the ’240’ has non-inverting outputs. QUICK REFERENCE DATA SYMBOL PARAMETER tPHL/tPLH Propagation delay 1An to 1Yn; 2An to 2Yn CI Input capacitance CPD Power dissipation capacitance per buffer CONDITIONS CL = 50pF VCC = 3 3.3V 3V Notes 1 and 2 TYPICAL UNIT 35 3.5 ns 4.4 pF 22.6 pF NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD x VCC2 x fi + (CL x VCC2 x fo) where: fi = input frequency in MHz; CL = output load capacity in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL x VCC2 x fo) = sum of outputs. 2. The condition is VI = GND to VCC ORDERING INFORMATION TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 20-Pin Plastic Shrink Small Outline (SO) –40°C to +85°C 74LVC244A D 74LVC244A D SOT163-1 20-Pin Plastic Shrink Small Outline (SSOP) Type II –40°C to +85°C 74LVC244A DB 74LVC244A DB SOT339-1 20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I –40°C to +85°C 74LVC244A PW 7LVC244APW DH SOT360-1 20-Pin Plastic Shrink Small Outline (SO) –40°C to +85°C 74LVCH244A D 74LVCH244A D SOT163-1 20-Pin Plastic Shrink Small Outline (SSOP) Type II –40°C to +85°C 74LVCH244A DB 74LVCH244A DB SOT339-1 20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I –40°C to +85°C 74LVCH244A PW LVCH244APW DH SOT360-1 PACKAGES 1998 May 20 2 853-1876 19419 Philips Semiconductors Product specification 74LVC244A 74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) PIN DESCRIPTION PIN NUMBER FUNCTION TABLE SYMBOL INPUTS FUNCTION OUTPUT 1 1OE nOE nAn nYn 2, 4, 6, 8 1A0 to 1A‘3 Data inputs L L L 3, 5, 7, 9 2Y0 to 2Y3 Bus outputs L H H 10 GND Ground (0V) H X Z 17, 15, 13, 11 2A0 to 2A3 Bus inputs 18, 16, 14, 12 1Y0 to 1Y3 Bus outputs 19 2OE Output enable input (active-LOW) 20 VCC Positive supply voltage Output enable input (active LOW) H L X Z = HIGH voltage level = LOW voltage level = Don’t care = High impedance OFF-state LOGIC SYMBOL PIN CONFIGURATION 1A0 1A1 1OE 1 20 VCC 1A0 2 19 2OE 2Y0 3 18 1Y0 1A1 4 17 2A0 2Y1 5 16 1Y1 1A2 6 15 2A1 2Y2 7 14 1Y2 1A3 8 13 2A2 2Y3 9 12 1Y3 11 2A3 GND 10 1A2 1A3 1OE 2 18 4 16 6 14 8 12 1Y0 2A0 1Y1 2A1 1Y2 2A2 1Y3 2A3 1 2OE 17 3 15 5 13 7 11 9 2Y2 2Y3 19 FUNCTIONAL DIAGRAM 2 1A0 1Y0 18 4 1A1 1Y1 16 6 1A2 1Y2 14 8 1A3 1Y3 12 LOGIC SYMBOL (IEEE/IEC) EN 1 1OE 2 18 4 16 6 14 8 12 17 2A0 2Yo 3 15 2A1 2Y1 5 13 2A2 2Y2 7 11 2A3 2Y3 9 19 EN 11 9 13 7 15 5 17 3 19 2OE SV00211 SV00209 1998 May 20 2Y1 SV00210 SV00212 1 2Yo 3 Philips Semiconductors Product specification 74LVC244A 74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL VCC VI VO PARAMETER CONDITIONS UNIT MIN MAX DC supply voltage (for max. max speed performance) 27 2.7 36 3.6 DC supply voltage (for low-voltage applications) 1.2 3.6 DC Input voltage range 0 5.5 DC Output voltage range; output HIGH or LOW state 0 VCC DC output voltage range; output 3-State 0 5.5 –40 +85 °C 0 0 20 10 ns/V V Tamb Operating ambient temperature range in free-air tr, tf Input rise and fall times VCC = 1.2 to 2.7V VCC = 2.7 to 3.6V V V ABSOLUTE MAXIMUM RATINGS1 In accordance with the Absolute Maximum Rating System (IEC 134) Voltages are referenced to GND (ground = 0V) PARAMETER SYMBOL VCC CONDITIONS UNIT –0.5 to +6.5 V IIK DC input diode current VI 0 –50 mA VI DC input voltage Note 2 –0.5 to +6.5 V IOK DC output diode current VO VCC or VO 0 50 mA DC output voltage; output HIGH or LOW state Note 2 –0.5 to VCC +0.5 DC output voltage; output 3-State Note 2 –0.5 to 6.5 DC output source or sink current VO = 0 to VCC VO IO IGND, ICC Tstg PTOT DC supply voltage RATING DC VCC or GND current Storage temperature range Power dissipation per package – plastic mini-pack (SO) – plastic shrink mini-pack (SSOP and TSSOP) above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K V 50 mA 100 mA –65 to +150 °C 500 500 mW NOTES: 1. Stresses beyond those listed 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. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 1998 May 20 4 Philips Semiconductors Product specification 74LVC244A 74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) DC ELECTRICAL CHARACTERISTICS Over recommended operating conditions voltages are referenced to GND (ground = 0V) LIMITS SYMBOL PARAMETER TEST CONDITIONS Temp = -40°C to +85°C MIN VIH HIGH level Input voltage VIL LOW level Input voltage VOH O VCC = 1.2V VCC VCC = 2.7 to 3.6V 2.0 TYP1 V VCC = 1.2V GND V VCC = 2.7 to 3.6V HIGH level output voltage 0.8 VCC = 2.7V; VI = VIH or VIL; IO = –12mA VCC0.5 VCC = 3.0V; VI = VIH or VIL; IO = –100µA VCC0.2 VCC = 3.0V; VI = VIH or VIL; IO = –18mA VCC0.6 VCC = 3.0V; VI = VIH or VIL; IO = –24mA VCC0.8 VCC VCC = 2.7V; VI = VIH or VIL; IO = 12mA VOL LOW level output voltage UNIT MAX V 0.40 VCC = 3.0V; VI = VIH or VIL; IO = 100µA GND VCC = 3.0V; VI = VIH or VIL; IO = 24mA 0.20 V 0.55 Input leakage current VCC = 3 3.6V; 6V; VI = 5 5.5V 5V or GND 0 1 0.1 5 µA IOZ 3-State output OFF-state current VCC = 3.6V; VI = VIH or VIL; VO = 5.5V or GND 0.1 5 µA Ioff Power off leakage supply VCC = 0.0V; VI or VO = 5.5V 0.1 10 µA ICC Quiescent supply current VCC = 3.6V; VI = VCC or GND; IO = 0 0.1 10 µA ∆ICC Additional quiescent supply current per input pin VCC = 2.7V to 3.6V; VI = VCC –0.6V; IO = 0 5 500 µA IBHL Bushold LOW sustaining current2, 3, 4 VCC = 3.0V; VI =0.8V 75 – – µA IBHH Bushold HIGH sustaining current2, 3, 4 VCC = 3.0V; VI =2.0V –75 – – µA IBHLO Bushold LOW overdrive current2, 3, 5 VCC = 3.6V 500 – – µA IBHHO current2, 3, 5 VCC = 3.6V –500 – – µA II Bushold HIGH overdrive NOTES: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. 2. Valid for data inputs of bushold parts (LVCH-A) only. 3. For data inputs only, control inputs do not have a bushold circuit 4. The specified sustaining current at the data inputs do not have a bushold circuit. 5. The specified overdrive current at the data input forces the data input to the opposite logic input state. 6. For bushold parts, the bushold circuit is switched off when VI exceeds VCC allowing 5.5V on the input terminal. 1998 May 20 5 Philips Semiconductors Product specification 74LVC244A 74LVCH244A Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) AC CHARACTERISTICS GND = 0V; tr = tf v 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C. LIMITS SYMBOL PARAMETER VCC = 3.3V ±0.3V WAVEFORM VCC = 2.7V VCC = 1.2V MIN TYP1 MAX MIN MAX TYP UNIT tPHL tPLH Propagation delay 1An to 1Yn; 2An to 2Yn 1, 3 1.5 3.5 5.9 1.5 6.9 16.0 ns tPZH tPZL 3-State output enable time 1OE to 1Yn; 2OE to 2Yn 2, 3 1.5 4.3 7.6 1.5 8.6 19.0 ns tPHZ tPLZ 3-State output disable time 1OE to 1Yn; 2OE to 2Yn 2, 3 1.5 3.7 5.8 1.5 6.8 17.0 ns NOTE: 1. Unless otherwise stated, all typical values are at VCC = 3.3V and Tamb = 25°C. AC WAVEFORMS TEST CIRCUIT VM = 1.5 V at VCC w 2.7 V; VM = 0.5 VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. VX = VOL + 0.3V at VCC ≥ 2.7V; VX = VOL + 0.1 VCC at VCC < 2.7V VY = VOH – 0.3V at VCC ≥ 2.7V; VY = VOH – 0.1 VCC at VCC < 2.7V 2<VCC Open GND RL=500 Ω VIN VOUT PULSE GENERATOR VI INPUT S1 VCC VM D.U.T. RT RL=500 Ω CL GND VOH tPHL tPLH Test Circuit for 3-State Outputs OUTPUT SWITCH POSITION VM VOL SY00041 Waveform 1. Input (Dn) to output (Qn) propagation delays. SWITCH VCC VIN Open tPLZ/tPZL 2<VCC t 2.7V 2.7 – 3.6V VCC 2.7V tPHZ/tPZH GND DEFINITIONS RL = Load resistor CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to ZOUT of pulse generators. VI nOE INPUT TEST tPLH/tPHL VM GND SW00047 tPLZ Waveform 3. Load circuitry for switching times. tPZL VCC Qn OUTPUT LOW-to-OFF OFF-to-LOW VM VX VOL tPHZ tPZH VOH Qn OUTPUT HIGH-to-OFF OFF-to-HIGH VY VM GND outputs enabled outputs disabled outputs enabled SW00207 Waveform 2. 3-State enable and disable times. 1998 May 20 6 Philips Semiconductors Product specification Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) 74LVC244A 74LVCH244A SO20: plastic small outline package; 20 leads; body width 7.5 mm 1998 May 20 7 SOT163-1 Philips Semiconductors Product specification Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) 74LVC244A 74LVCH244A SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm 1998 May 20 8 SOT339-1 Philips Semiconductors Product specification Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) 74LVC244A 74LVCH244A TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm 1998 May 20 9 SOT360-1 Philips Semiconductors Product specification Octal buffer/line driver with 5-volt tolerant inputs/outputs (3-State) 74LVC244A 74LVCH244A Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. [1] Please consult the most recently issued datasheet before initiating or completing a design. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 print code Document order number: yyyy mmm dd 10 Date of release: 05-96 9397-750-04502