INTEGRATED CIRCUITS 74LVC257A Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) Product specification Superceded data of 1997 Sep 26 IC24 Data Handbook 1998 Jul 29 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) FEATURES 74LVC257A DESCRIPTION • Wide supply voltage range of 1.2 to 3.6 V • In accordance with JEDEC standard no. 8-1A • CMOS lower power consumption • Direct interface with TTL levels • Output drive capability 50 transmission lines at 85°C • 5 Volt tolerant inputs/outputs, for interfacing with 5 Volt logic The 74LVC257A is a high-performance, low-power, low-voltage, Si-gate CMOS device and superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3V or 5.0V devices. In 3-State operation, outputs can handle 5V. This feature allows the use of these devices as translators in a mixed 3.3V/5V environment. The 74LVC257A is a quad 2-input multiplexer with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (S). The data inputs from source 0 (1l0 to 4l0) are selected when input S is LOW and the data inputs from source 1 (1l1 to 4l1) are selected when S in HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs. The 74LVC257A is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to S. The outputs are forced to a high impedance OFF-state when OE is HIGH. QUICK REFERENCE DATA GND = 0 V; Tamb = 25°C; tr =tf ≤ 2.5 ns PARAMETER SYMBOL tPHL/tPLH Propagation delay nl0, nl1 to nY S to nY CI Input capacitance CPD CONDITIONS TYPICAL UNIT 3.9 3.5 ns 5.0 pF 30 pF CL = 50 pF; VCC = 3.3 V Power dissipation capacitance per channel VI = GND to VCC 1 NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in µW) PD = CPD × VCC2 × fi (CL × VCC2 × fo) where: fi = input frequency in MHz; CL = output load capacitance in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL × VCC2 × fo) = sum of the outputs. ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 16-Pin Plastic SO –40°C to +85°C 74LVC257A D 74LVC257A D SOT109-1 16-Pin Plastic SSOP Type II –40°C to +85°C 74LVC257A DB 74LVC257A DB SOT338-1 16-Pin Plastic TSSOP Type I –40°C to +85°C 74LVC257A PW 74LVC257APW DH SOT403-1 PIN CONFIGURATION LOGIC SYMBOL S 1 16 VCC 1I0 2 15 OE 1I1 3 14 4l0 IY 4 13 4l1 2l0 5 12 4Y 2l1 6 11 3l0 2Y 7 10 3l1 GND 8 9 3Y 2 3 5 6 11 10 14 13 1I0 11I 2I0 2I1 3I0 3I1 4I0 4I1 1 S 15 OE 1Y 2Y 3Y 4Y 4 7 9 12 SV00637 SV00636 1998 Jul 29 2 853-2101 19802 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) PIN DESCRIPTION PIN NUMBER FUNCTION TABLE SYMBOL 1 74LVC257A FUNCTION S INPUTS OUTPUTS Common data select input OE S nl0 nl1 nY X X X Z 2, 5, 11, 14 1l0 to 4l0 Data inputs from source 0 H 3, 6, 10, 13 1l1 to 4l1 Data outputs from source 1 L H X L L 4, 7, 9, 12 1Y to 4Y 3-State multiplexer outputs L H X H H 8 GND Ground (0 V) L L L X L 15 OE 3-State output enable input (active LOW) L L H X H 16 VCC Positive supply voltage NOTES: H = HIGH voltage level L = LOW voltage level X = don’t care Z = high impedance OFF-state LOGIC SYMBOL (IEEE/IEC) 1 15 G1 LOGIC DIAGRAM EN 1I1 2 1 1Y 1I0 MUX 4 3 1 2I1 5 2Y 2I0 7 6 3I1 11 3Y 3I0 9 10 4I1 14 12 4Y 4I0 13 OE SV00638 S FUNCTIONAL DIAGRAM 2 1I0 3 1I1 5 2I0 6 2I1 11 3I0 10 3I1 14 4I0 13 4I1 SELECTOR SV00640 1Y 4 2Y 7 3Y 9 4Y 12 3–STATE MULTIPLEXER OUTPUTS S OE 1 15 SV00639 1998 Jul 29 3 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) 74LVC257A RECOMMENDED OPERATING CONDITIONS SYMBOL VCC VI VO Tamb tr, tf PARAMETER CONDITIONS LIMITS MIN MAX DC supply voltage (for max. speed performance) 2.7 3.6 DC supply voltage (for low-voltage applications) 1.2 3.6 UNIT V DC input voltage range 0 5.5 DC input 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 Operating free-air temperature range VCC = 1.2 to 2.7V VCC = 2.7 to 3.6V Input rise and fall times V V ABSOLUTE MAXIMUM RATINGS1 In accordance with the Absolute Maximum Rating System (IEC 134); Voltages are referenced to GND (ground = 0V) SYMBOL VCC PARAMETER CONDITIONS DC supply voltage RATING UNIT –0.5 to +6.5 V IIK DC input diode current VI t 0 –50 mA VI DC input voltage Note 2 –0.5 to +5.5 V IOK DC output diode current VO uVCC or VO t 0 "50 mA DC output voltage; output HIGH or LOW 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 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 Jul 29 4 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) 74LVC257A 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 VCC*0.5 VCC = 3.0V; VI = VIH or VIL; IO = –100µA VCC*0.2 VCC = 3.0V; VI = VIH or VIL; IO = –18mA VCC*0.6 VCC = 3.0V; VI = VIH or VIL; IO = –24mA VCC*0.8 VCC V VCC = 2.7V; VI = VIH or VIL; IO = 12mA VOL 0.40 VCC = 3.0V; VI = VIH or VIL; IO = 100µA LOW level output voltage GND 0.20 VCC = 3.0V; VI = VIH or VIL; IO = 24mA II V 0.55 "0 1 "0.1 "5 µA VCC = 3.6V; VI = VIH or VIL; VO = VCC or GND 0.1 "5 µA Power off leakage current VCC = 0.0V; VI or VO = 5.5V 0.1 "10 µA Quiescent supply current VCC = 3.6V; VI = VCC or GND; IO = 0 0.1 10 µA Additional quiescent supply current per input pin VCC = 2.7V to 3.6V; VI = VCC –0.6V; IO = 0 5 500 µA Input leakage current VCC = 3 3.6V; 6V; VI = 5 5.5V 5V or GND IOZ 3-State output OFF-state current IOFF ICC ∆ICC UNIT MAX NOTES: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. AC CHARACTERISTICS GND = 0 V; tr = tf v 2.5 ns; CL = 50 pF; RL = 500; Tamb = –40C to +85C LIMITS SYMBOL PARAMETER WAVEFORM VCC = 3.3V ±0.3V VCC = 2.7V MIN TYP1 MAX MIN TYP1 MAX TYP VCC = 1.2V UNIT tPHL/tPLH Propagation delay nl0 to nY nl1 to nY Figures 1, 3 1.5 3.9 5.1 1.5 3.3 6.1 11 ns tPHL/tPLH Propagation delay S to nY Figures 1, 3 1.5 3.5 6.4 1.5 4.3 7.5 14 ns tPZH/tPZL 3-state output enable time OE to nY Figures 2, 3 1.5 3.7 6.5 1.5 4.6 7.5 15 ns tPHZ/tPLZ 3-state output disable time OE to nY Figures 2, 3 1.5 3.2 5.2 1.5 3.5 6.2 12 ns NOTE: 1. These typical values are at VCC = 3.3V and Tamb = 25°C. 1998 Jul 29 5 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) AC WAVEFORMS 74LVC257A TEST CIRCUIT VM = 0.5 × VCC at VCC < 2.7 V VM = 1.5 V at VCC ≥ 2.7 V VX = VOL + 0.3 V at VCC ≥ 2.7 V VX = VOL + 0.1 × VCC at VCC < 2.7 V VY = VOH – 0.3 V at VCC ≥ 2.7V VY = VOH – 0.1 × VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. S1 VCC PULSE GENERATOR VI 2 x VCC Open GND 500Ω VO D.U.T. RT 50pF CL 500Ω VCC Test VM S, nI0, nI1 INPUTS GND tPHL tPLH S1 VCC VI tPLH/tPHL Open 2.7V VCC tPLZ/tPZL 2 x VCC 2.7V – 3.6V 2.7V tPHZ/tPZH GND SY00003 VOH Figure 3. Load circuitry for switching times. VM nY OUTPUT VOL SV00641 Figure 1. Input (S, nl0, nl1) to output (nY) propagation delays. VI OE INPUT VM GND tPZL tPLZ VCC OUTPUT LOW-to-OFF OFF-to-LOW VOL VM VX tPZH tPHZ VOH VY OUTPUT HIGH-to-OFF OFF-to-HIGH GND VM outputs enabled outputs disabled outputs enabled SV00642 Figure 2. 3-state enable and disable times. 1998 Jul 29 6 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) SO16: plastic small outline package; 16 leads; body width 3.9 mm 1998 Jul 29 7 74LVC257A SOT109-1 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm 1998 Jul 29 8 74LVC257A SOT338-1 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm 1998 Jul 29 9 74LVC257A SOT403-1 Philips Semiconductors Product specification Quad 2-input multiplexer with 5 Volt tolerant inputs/outputs (3-State) 74LVC257A 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: 08-98 9397-750-04504