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74HC257DB,118

74HC257DB,118

  • 厂商:

    NXP(恩智浦)

  • 封装:

    SSOP16

  • 描述:

    74HC257DB - MULTIPLEXER, HC/UH

  • 数据手册
  • 价格&库存
74HC257DB,118 数据手册
74HC257; 74HCT257 Quad 2-input multiplexer; 3-state Rev. 8 — 9 February 2021 Product data sheet 1. General description The 74HC257; 74HCT257 is a quad 2-input multiplexer with 3-state outputs. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits • • • • • • • • • • Wide supply voltage range from 2.0 V to 6.0 V CMOS low power dissipation High noise immunity Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards: • JESD8C (2.7 V to 3.6 V) • JESD7A (2.0 V to 6.0 V) Non-inverting data path 3-state outputs interface directly with system bus Input levels: • For 74HC257: CMOS level • For 74HCT257: TTL level ESD protection: • HBM JESD22-A114F exceeds 2000 V • MM JESD22-A115-A exceeds 200 V Specified from -40 °C to +85 °C and from -40 °C to +125 °C 3. Ordering information Table 1. Ordering information Type number Package 74HC257D Temperature range Name Description Version -40 °C to +125 °C SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 -40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm 74HCT257D 74HC257PW 74HCT257PW SOT403-1 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 4. Functional diagram 1 15 1 2 1I0 3 1I1 5 2I0 6 2I1 11 3I0 10 3I1 14 4I0 13 4I1 15 OE S 2 1Y 2Y 4 3 G1 EN 1 5 7 7 6 3Y 9 11 9 10 4Y 12 14 12 13 001aad467 Logic symbol Fig. 2. 2 3 1I0 1I1 1 S 15 OE Fig. 3. 4 1 mga835 Fig. 1. MUX 5 6 2I0 2I1 IEC logic symbol 11 10 3I0 3I1 14 13 4I0 4I1 SELECTOR 3-STATE MULTIPLEXER OUTPUTS 1Y 2Y 3Y 4Y 4 7 9 12 mgr280 Functional diagram 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 2 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 1I0 1Y 1I1 2I0 2Y 2I1 3I0 3Y 3I1 4I0 4Y 4I1 OE S Fig. 4. 001aad468 Logic diagram 5. Pinning information 5.1. Pinning 74HC257 74HCT257 S 1 16 VCC 1I0 2 15 OE 1I1 3 14 4I0 1Y 4 13 4I1 2I0 5 12 4Y 2I1 6 11 3I0 2Y 7 10 3I1 GND 8 9 3Y 001aad499 Fig. 5. Pin configuration SOT109-1 (SO16) and SOT403-1 (TSSOP16) 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 3 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 5.2. Pin description Table 2. Pin description Symbol Pin Description S 1 common data select input 1I0, 2I0, 3I0, 4I0 2, 5, 11, 14 data input from source 0 1I1, 2I1, 3I1, 4I1 3, 6, 10, 13 data input from source 1 1Y, 2Y, 3Y, 4Y 4, 7, 9, 12 3-state multiplexer output GND 8 ground (0 V) OE 15 3-state output enable input (active LOW) VCC 16 supply voltage 6. Function description Table 3. Function table H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. Control Output Input OE S nl0 nl1 nY H X X X Z L H X L L L H X H H L L L X L L L H X H 7. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max -0.5 +7 V [1] - ±20 mA [1] - ±20 mA - ±35 mA supply current - +70 mA ground current -70 - mA Tstg storage temperature -65 +150 °C Ptot total power dissipation - 500 mW VCC supply voltage IIK input clamping current VI < -0.5 V or VI > VCC + 0.5 V IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V IO output current VO = -0.5 V to VCC + 0.5 V ICC IGND [1] [2] [2] Unit The input and output voltage ratings may be exceeded if the input and output current ratings are observed. For SOT109-1 (SO16) package: Ptot derates linearly with 12.4 mW/K above 110 °C. For SOT403-1 (TSSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C. 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 4 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 8. Recommended operating conditions Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V) Symbol Parameter Conditions 74HC257 74HCT257 Unit Min Typ Max Min Typ Max 2.0 5.0 6.0 4.5 5.0 5.5 V VCC supply voltage VI input voltage 0 - VCC 0 - VCC V VO output voltage 0 - VCC 0 - VCC V Tamb ambient temperature -40 +25 +125 -40 +25 +125 °C Δt/ΔV input transition rise and fall rate VCC = 2.0 V - - 625 - - - ns/V VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V VCC = 6.0 V - - 83 - - - ns/V 9. Static characteristics Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V VI = VIH or VIL HIGH-level output voltage IO = -20 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = -20 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V 74HC257 VIH VIL VOH VOL HIGH-level input voltage LOW-level input voltage IO = -20 μA; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V IO = -6.0 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V IO = -7.8 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V VI = VIH or VIL LOW-level output voltage IO = 20 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V IO = 6.0 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V IO = 7.8 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V II input leakage current VI = VCC or GND; VCC = 6.0 V - - ±0.1 - ±1.0 - ±1.0 μA IOZ OFF-state output current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - - ±0.5 - ±5.0 - ±10.0 μA ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 - 160 μA 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 5 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state Symbol Parameter CI Conditions 25 °C input capacitance -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max - 3.5 - - - - - pF 74HCT257 VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V VIL LOW-level input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V VOH VI = VIH or VIL; VCC = 4.5 V HIGH-level output voltage IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V 3.98 4.32 - 3.84 - 3.7 - V - 0 0.1 - 0.33 - 0.4 V - 0.15 0.26 - 0.33 - 0.4 V IO = -6 mA VOL VI = VIH or VIL; VCC = 4.5 V LOW-level output voltage IO = 20 μA IO = 6.0 mA II input leakage current VI = VCC or GND; VCC = 5.5 V - - ±0.1 - ±1.0 - ±1.0 μA IOZ OFF-state output current VI = VIH or VIL; VCC = 5.5 V; VO = VCC or GND - - ±0.5 - ±5.0 - ±10 μA ICC supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V - - 8.0 - 80 - 160 μA ΔICC VI = VCC - 2.1 V; additional supply current other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; IO = 0 A CI input capacitance 74HC_HCT257 Product data sheet per input pin: nI0, nI1 - 40 144 - 180 - 196 μA OE input - 135 486 - 608 - 662 μA S input - 70 252 - 315 - 343 μA - 3.5 - - - - - pF All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 6 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 10. Dynamic characteristics Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); For test circuit see Fig. 8. Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max VCC = 2.0 V - 36 110 - 140 - 165 ns VCC = 4.5 V - 13 22 - 28 - 33 ns VCC = 5.0 V; CL = 15 pF - 11 - - - - - ns VCC = 6.0 V - 10 19 - 24 - 28 ns VCC = 2.0 V - 47 150 - 190 - 225 ns VCC = 4.5 V - 17 30 - 38 - 45 ns VCC = 5.0 V; CL = 15 pF - 14 - - - - - ns - 14 26 - 33 - 38 ns VCC = 2.0 V - 33 150 - 190 - 225 ns VCC = 4.5 V - 12 30 - 38 - 45 ns VCC = 6.0 V - 10 26 - 33 - 38 ns VCC = 2.0 V - 41 150 - 190 - 225 ns VCC = 4.5 V - 15 30 - 38 - 45 ns VCC = 6.0 V - 12 26 - 33 - 38 ns VCC = 2.0 V - 14 60 - 75 - 90 ns VCC = 4.5 V - 5 12 - 15 - 18 ns VCC = 6.0 V - 4 10 - 13 - 15 ns - 45 - - - - - pF 74HC257 tpd propagation nl0 to nY or nl1 to nY; see Fig. 6 delay [1] S to nY; see Fig. 6 VCC = 6.0 V ten tdis tt CPD enable time OE to nY; see Fig. 7 disable time OE to nY; see Fig. 7 transition time see Fig. 6 power per multiplexer; dissipation VI = GND to VCC capacitance 74HC_HCT257 Product data sheet [2] [3] [4] [5] All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 7 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max VCC = 4.5 V - 16 30 - 38 - 45 ns VCC = 5.0 V; CL = 15 pF - 13 - - - - - ns VCC = 4.5 V - 20 35 - 44 - 53 ns VCC = 5.0 V; CL = 15 pF - 17 - - - - - ns 74HCT257 propagation nl0 to nY or nl1 to nY; see Fig. 6 delay tpd [1] S to nY; see Fig. 6 ten enable time OE to nY; VCC = 4.5 V; see Fig. 7 [2] - 15 30 - 38 - 45 ns tdis disable time OE to nY; VCC = 4.5 V; see Fig. 7 [3] - 16 30 - 38 - 45 ns tt transition time [4] - 5 12 - 15 - 18 ns CPD power per multiplexer; dissipation VI = GND to VCC - 1.5 V capacitance [5] - 45 - - - - - pF [1] [2] [3] [4] [5] VCC = 4.5 V; see Fig. 6 tpd is the same as tPHL, tPLH. ten is the same as tPZH, tPZL. tdis is the same as tPHZ, tPLZ. tt is the same as tTHL, tTLH. CPD is used to determine the dynamic power dissipation (PD in μW). 2 2 PD = CPD x VCC x fi x N + Σ(CL x VCC x fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; 2 Σ(CL x VCC x fo) = sum of outputs. 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 8 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 10.1. Waveforms and test circuit VI input S, nI0, nI1 VM VM GND t PHL t PLH VOH 90 % output nY VM VM 10 % VOL t THL t TLH 001aad477 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig. 6. Propagation delays input (S, nI0, nI1) to output (nY) and output (nY) transition times tr VI tf 90 % OE input VM GND 10 % tPLZ output LOW-to-OFF OFF-to-LOW VM 10 % VOL output tPZL VCC tPHZ VOH tPZH 90 % HIGH-to-OFF OFF-to-HIGH VM GND outputs enabled outputs enabled outputs disabled 001aac479 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig. 7. 3-state output enable and disable times Table 8. Measurement points Type Input Output VM VM 74HC257 0.5VCC 0.5VCC 74HCT257 1.3 V 1.3 V 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 9 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state VI negative pulse tW 90 % VM 0V VI positive pulse 0V VM 10 % tf tr tr tf 90 % VM VM 10 % tW VCC G VI DUT VCC VO RT RL S1 open CL 001aad983 Measurement points are given in Table 8 and test data is given in Table 9. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. RL = Load resistance. Fig. 8. Test circuit for measuring switching times Table 9. Test data Type Input Load Switch position VI tr, tf CL RL tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 74HC257 VCC 6 ns 50 pF 1 kΩ open GND VCC 74HCT257 3V 6 ns 50 pF 1 kΩ open GND VCC 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 10 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 11. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 8 e w M bp 0 2.5 detail X 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 inches 0.069 0.010 0.057 0.004 0.049 0.01 0.019 0.0100 0.39 0.014 0.0075 0.38 0.16 0.15 0.05 0.039 0.016 0.028 0.020 0.01 0.01 0.004 0.028 0.012 0.244 0.041 0.228 θ o 8 o 0 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. Fig. 9. REFERENCES OUTLINE VERSION IEC JEDEC SOT109-1 076E07 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Package outline SOT109-1 (SO16) 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 11 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm D SOT403-1 E A X c y HE v M A Z 9 16 Q A2 pin 1 index (A 3 ) A1 A θ Lp 1 L 8 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) θ mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 1 0.75 0.50 0.4 0.3 0.2 0.13 0.1 0.40 0.06 8o 0o Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT403-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18 MO-153 Fig. 10. Package outline SOT403-1 (TSSOP16) 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 12 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 12. Abbreviations Table 10. Abbreviations Acronym Description CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 13. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes 74HC_HCT257 v.8 20210209 Product data sheet - 74HC_HCT257 v.7 Modifications: • • • • • The format of this data sheet has been redesigned to comply with the identity guidelines of Nexperia. Legal texts have been adapted to the new company name where appropriate. Section 2 updated. Section 7: Derating values for Ptot total power dissipation have changed. Type numbers 74HC257DB and 74HCT257DB (SOT338-1 / SSOP16) removed. 74HC_HCT257 v.7 20160202 Modifications: • 74HC_HCT257 v.6 20150126 Modifications: • 74HC_HCT257 v.5 20100113 Modifications: • 74HC_HCT257 v.4 20090608 74HC_HCT257 v.3 20050920 74HC_HCT257_CNV v.2 19980930 Product specification - 74HC_HCT257 Product data sheet Product data sheet - 74HC_HCT257 v.6 Type numbers 74HC257N and 74HCT257N (SOT38-4) removed. Product data sheet - 74HC_HCT257 v.5 Table 7: Power dissipation capacitance condition for 74HCT257 is corrected. Product data sheet - 74HC_HCT257 v.4 Product data sheet - 74HC_HCT257 v.3 Product data sheet - 74HC_HCT257_CNV v.2 Table 7: changed 3OE to OE All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 - © Nexperia B.V. 2021. All rights reserved 13 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state 14. Legal information injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Data sheet status Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. Document status [1][2] Product status [3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] [2] [3] Please consult the most recently issued document before initiating or completing a design. The term 'short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the internet at https://www.nexperia.com. Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification — The information and data provided in a Product data sheet shall define the specification of the product as agreed between Nexperia and its customer, unless Nexperia and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the Nexperia product is deemed to offer functions and qualities beyond those described in the Product data sheet. Disclaimers Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia takes no responsibility for the content in this document if provided by an information source outside of Nexperia. In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia’s aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia. Right to make changes — Nexperia reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — Nexperia products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal 74HC_HCT257 Product data sheet Applications — Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the Nexperia product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). Nexperia does not accept any liability in this respect. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale — Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of Nexperia products by customer. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Non-automotive qualified products — Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. Nexperia accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond Nexperia’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies Nexperia for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond Nexperia’s standard warranty and Nexperia’s product specifications. Translations — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 14 / 15 74HC257; 74HCT257 Nexperia Quad 2-input multiplexer; 3-state Contents 1. General description...................................................... 1 2. Features and benefits.................................................. 1 3. Ordering information....................................................1 4. Functional diagram.......................................................2 5. Pinning information......................................................3 5.1. Pinning.........................................................................3 5.2. Pin description............................................................. 4 6. Function description.................................................... 4 7. Limiting values............................................................. 4 8. Recommended operating conditions..........................5 9. Static characteristics....................................................5 10. Dynamic characteristics............................................ 7 10.1. Waveforms and test circuit........................................ 9 11. Package outline........................................................ 11 12. Abbreviations............................................................ 13 13. Revision history........................................................13 14. Legal information......................................................14 © Nexperia B.V. 2021. All rights reserved For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 9 February 2021 74HC_HCT257 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 8 — 9 February 2021 © Nexperia B.V. 2021. All rights reserved 15 / 15
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