INTEGRATED CIRCUITS 74LV257 Quad 2-input multiplexer (3-State) Product specification Supersedes data of 1997 Jun 06 IC24 Data Handbook 1998 May 20 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 FEATURES DESCRIPTION • Optimized for low voltage applications: 1.0 to 3.6 V • Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V • Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, The 74LV257 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT257. The 74LV257 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) from the selected inputs. The 74LV257 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. Tamb = 25°C • Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Tamb = 25°C • Non-inverting data path • Output capability: bus driver • ICC category: MSI The logic equations for the outputs are: 1Y = OE × (1l1 × S + 1l0 × S) 2Y = OE × (2l1 × S + 2l0 × S) 3Y = OE × (3l1 × S + 3l0 × S) 4Y = OE × (4l1 × S + 4l0 × S) 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 CL = 15 pF; VCC = 3.3 V Power dissipation capacitance per gate VI = GND to VCC 1 TYPICAL UNIT 10 14 ns 3.5 pF 30 pF 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 TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 16-Pin Plastic DIL PACKAGES –40°C to +125°C 74LV257 N 74LV257 N SOT38-4 16-Pin Plastic SO –40°C to +125°C 74LV257 D 74LV257 D SOT109-1 16-Pin Plastic SSOP Type II –40°C to +125°C 74LV257 DB 74LV257 DB SOT338-1 16-Pin Plastic TSSOP Type I –40°C to +125°C 74LV257 PW 74LV257PW DH SOT403-1 PIN CONFIGURATION PIN DESCRIPTION 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 PIN NUMBER SYMBOL FUNCTION 1 S Common data select input 2, 5, 11, 14 1l0 to 4l0 Data inputs from source 0 3, 6, 10, 13 1l1 to 4l1 Data inputs from source 1 4, 7, 9, 12 1Y to 4Y 3-state multiplexer outputs 8 GND Ground (0 V) 15 OE 3-State output enable input (active LOW) 16 VCC Positive supply voltage SV00636 1998 May 20 2 853-1985 19420 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 LOGIC SYMBOL FUNCTIONAL DIAGRAM 2 3 5 6 11 10 14 13 1I0 11I 2I0 2I1 3I0 3I1 4I0 4I1 2 1I0 3 1I1 1 S 5 2I0 15 OE 6 2I1 1Y 2Y 3Y 4Y 4 7 9 12 SV00637 11 3I0 10 3I1 14 4I0 13 4I1 1Y 4 2Y 7 3Y 9 4Y 12 3–STATE MULTIPLEXER OUTPUTS SELECTOR LOGIC SYMBOL (IEEE/IEC) 1 15 S OE 1 15 G1 SV00639 EN FUNCTION TABLE 2 1 INPUTS MUX 4 3 1 5 7 6 11 9 10 12 13 SV00638 LOGIC DIAGRAM 1Y 1I0 2I1 2Y 2I0 3I1 3Y 3I0 4I1 4Y 4I0 OE S SV00640 1998 May 20 OE S nl0 nl1 nY H X X X Z L L L L H H L L X X L H L H X X L H L H NOTES: H = HIGH voltage level L = LOW voltage level X = don’t care Z = high impedance OFF-state 14 1I1 OUTPUTS 3 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 RECOMMENDED OPERATING CONDITIONS SYMBOL VCC PARAMETER CONDITIONS MIN TYP MAX UNIT See Note 1 1.0 3.3 3.6 V DC supply voltage VI Input voltage 0 – VCC V VO Output voltage 0 – VCC V +85 +125 °C 500 200 100 ns/V Tamb Operating ambient temperature range in free air tr, tf Input rise and fall times See DC and AC characteristics –40 –40 VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V – – – – – – NOTE: 1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC =3.6V. ABSOLUTE MAXIMUM RATINGS1, 2 In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0 V). SYMBOL PARAMETER CONDITIONS RATING UNIT –0.5 to +4.6 V VCC DC supply voltage IIK DC input diode current VI < –0.5 or VI > VCC + 0.5V 20 mA IOK DC output diode current VO < –0.5 or VO > VCC + 0.5V 50 mA IO DC output source or sink current – bus driver outputs –0.5V < VO < VCC + 0.5V 35 mA 70 mA –65 to +150 °C IGND, ICC Tstg PTOT DC VCC or GND current for types with – bus driver outputs Storage temperature range Power dissipation per package – plastic DIL – plastic mini-pack (SO) – plastic shrink mini-pack (SSOP and TSSOP) for temperature range: –40 to +125°C above +70°C derate linearly with 12 mW/K above +70°C derate linearly with 8 mW/K above +60°C derate linearly with 5.5 mW/K 750 500 400 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 Quad 2-input multiplexer (3-State) 74LV257 DC ELECTRICAL CHARACTERISTICS Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V). LIMITS SYMBOL PARAMETER -40°C to +85°C TEST CONDITIONS MIN HIGH level l l Input I t voltage VIH LOW level l l Input I t voltage VIL TYP1 VOH HIGH level output voltage; BUS driver outputs MIN 0.9 0.9 VCC = 2.0 V 1.4 1.4 VCC = 2.7 to 3.6 V 2.0 UNIT MAX V 2.0 VCC = 1.2 V 0.3 0.3 VCC = 2.0 V 0.6 0.6 0.8 0.8 VCC = 1.2 V; VI = VIH or VIL; –IO = 100µA HIGH level output voltage; all outputs MAX VCC = 1.2 V VCC = 2.7 to 3.6 V VOH O -40°C to +125°C V 1.2 VCC = 2.0 V; VI = VIH or VIL; –IO = 100µA 1.8 2.0 1.8 VCC = 2.7 V; VI = VIH or VIL; –IO = 100µA 2.5 2.7 2.5 VCC = 3.0 V; VI = VIH or VIL; –IO = 100µA 2.8 3.0 2.8 VCC = 3.0 V; VI = VIH or VIL; –IO = 8mA 2.40 2.82 2.20 V V VCC = 1.2 V; VI = VIH or VIL; IO = 100µA 0 VCC = 2.0 V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 2.7 V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 VCC = 3.0 V; VI = VIH or VIL; IO = 100µA 0 0.2 0.2 0.20 0.40 0.50 V 1.0 1.0 µA 5 10 µA VOL O LOW level output voltage; all outputs VOL LOW level output voltage; BUS driver outputs VCC = 3.0 V; VI = VIH or VIL; IO = 8mA Input leakage current VCC = 3.6 V; VI = VCC or GND IOZ 3-State output OFF-state current VCC = 3.6 V; VI = VIH or VIL; VO = VCC or GND ICC Quiescent supply current; MSI VCC = 3.6 V; VI = VCC or GND; IO = 0 20.0 160 µA ∆ICC Additional quiescent supply current per input VCC = 2.7 V to 3.6 V; VI = VCC – 0.6 V 500 850 µA II NOTE: 1. All typical values are measured at Tamb = 25°C. 1998 May 20 5 V Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 AC CHARACTERISTICS GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ SYMBOL PARAMETER WAVEFORM LIMITS CONDITION –40 to +85 °C VCC(V) Propagation delay nl0 to nY nl1 to nY tPHL//tPLH Propagation g delay y S to nY tPHL/tPLH 3-State output enable time OE to nY tPZH/tPZL 3-State output disable time OE to nY tPHZ//tPLZ MIN TYP1 –40 to +125 °C MAX MIN MAX 1.2 65 2.0 22 43 51 2.7 16 31 38 3.0 to 3.6 122 25 30 1.2 85 2.0 29 56 66 2.7 21 41 49 3.0 to 3.6 162 33 39 1.2 60 2.0 20 39 46 2.7 15 29 34 3.0 to 3.6 112 23 27 1.2 65 2.0 24 40 49 2.7 18 32 37 3.0 to 3.6 142 26 30 Figure 1 Figure 1 Figure 2 Figure 2 UNIT ns ns ns ns NOTES: 1. Unless otherwise stated, all typical values are measured at Tamb = 25°C 2. Typical values are measured at VCC = 3.3 V. AC WAVEFORMS 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. VI OE INPUT OUTPUT LOW-to-OFF OFF-to-LOW VOL VOH tPHL tPLH VM outputs enabled VM outputs disabled outputs enabled SV00642 SV00641 Figure 2. 3-State enable and disable times. Figure 1. Input (S, nl0, nl1) to output (nY) propagation delays. 1998 May 20 tPZH VY OUTPUT HIGH-to-OFF OFF-to-HIGH GND VOH VOL VM VX tPHZ VM GND nY OUTPUT tPZL tPLZ VCC VCC S, nI0, nI1 INPUTS VM GND 6 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 TEST CIRCUIT VCC VO VI PULSE GENERATOR D.U.T. 50pF RT CL RL= 1KΩ Test Circuit for switching times DEFINITIONS RT = Termination resistance should be equal to ZOUT of pulse generators. RL = Load resistor CL = Load capacitance includes jig and probe capacitance TEST tPLH/tPHL VCC VI < 2.7V VCC 2.7–3.6V 2.7V SV00776 Figure 3. Load circuitry for switching times. 1998 May 20 7 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 DIP14: plastic dual in-line package; 14 leads (300 mil) 1998 May 20 8 SOT27-1 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 SO14: plastic small outline package; 14 leads; body width 3.9 mm 1998 May 20 9 SOT108-1 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm 1998 May 20 10 SOT337-1 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 TSSOP14: plastic thin shrink small outline package; 14 leads; body width 4.4 mm 1998 May 20 11 SOT402-1 Philips Semiconductors Product specification Quad 2-input multiplexer (3-State) 74LV257 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product Specification Full 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. Philips Semiconductors and Philips Electronics North America Corporation reserve 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. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. 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: 1998 May 20 12 Date of release: 05-96 9397-750-04441