74HCT368DB,112

74HC368; 74HCT368 Hex buffer/line driver; 3-state; inverting Rev. 4 — 5 August 2021 Product data sheet 1. General description The 74HC368; 74HCT368 is a hex inverting buffer/line driver with 3-state outputs controlled by the output enable inputs (nOE). A HIGH on nOE causes the outputs to assume a high impedance OFF-state. Inputs include clamp diodes enable 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 to 6.0 V Input levels: • For 74HC368: CMOS level • For 74HCT368: TTL level CMOS low power dissipation High noise immunity Inverting 3-state outputs Complies with JEDEC standards • JESD8C (2.7 V to 3.6 V) • JESD7A (2.0 V to 6.0 V) Latch-up performance exceeds 100 mA per JESD 78 Class II Level B ESD protection: • HBM JESD22-A114F exceeds 2000 V • MM JESD22-A115-A exceeds 200 V Specified from -40 °C to +85 °C and -40 °C to +125 °C 3. Ordering information Table 1. Ordering information Type number Package 74HC368D 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 74HCT368D 74HC368PW 74HCT368PW SOT403-1 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 4. Functional diagram 2 4 6 10 1 12 14 15 1A 1Y 2A 2Y 3A 3Y 4A 4Y 3 5 1 5Y 6A 6Y 2 3 4 5 6 7 10 9 9 1OE 5A EN 7 11 15 EN 13 2OE 12 11 14 13 aaa-024299 Fig. 1. Logic symbol aaa-024300 Fig. 2. IEC logic symbol VCC 1A 1Y 1OE GND 2A 2Y 3A 3Y 4A 4Y 5A 5Y 2OE 6A 6Y aaa-024301 Fig. 3. Logic diagram 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 2 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 5. Pinning information 5.1. Pinning 74HC368 74HCT368 1OE 1 16 VCC 1A 2 15 2OE 1Y 3 14 6A 2A 4 13 6Y 2Y 5 12 5A 3A 6 11 5Y 3Y 7 10 4A GND 8 9 74HC368 74HCT368 4Y 1OE 1 16 VCC 1A 2 15 2OE 1Y 3 14 6A 2A 4 13 6Y 2Y 5 12 5A 3A 6 11 5Y 3Y 7 10 4A GND 8 9 aaa-024303 aaa-024302 Fig. 4. 4Y Pin configuration SOT109-1 (SO16) Fig. 5. Pin configuration SOT403-1 (TSSOP16) 5.2. Pin description Table 2. Pin description Symbol Pin Description 1OE, 2OE 1, 15 output enable input (active LOW) 1A, 2A, 3A, 4A, 5A, 6A 2, 4, 6, 10, 12, 14 data input 1Y, 2Y, 3Y, 4Y, 5Y, 6Y 3, 5, 7, 9, 11, 13 bus output GND 8 ground (0 V) VCC 16 supply voltage 6. Functional description Table 3. Function table H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. Output Input nOE nA nY L L H L H L H X Z 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 3 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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 Unit -0.5 +7 V VCC supply voltage IIK input clamping current VI < -0.5 V or VI > VCC + 0.5 V - ±20 mA IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V - ±20 mA IO output current -0.5 V < VO < VCC + 0.5 V - ±35 mA ICC supply current - 70 mA IGND ground current -70 - mA Tstg storage temperature -65 +150 °C Ptot total power dissipation - 500 mW [1] [1] 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. 8. Recommended operating conditions Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V) Symbol Parameter Conditions VCC supply voltage VI input voltage VO output voltage Tamb ambient temperature Δt/ΔV input transition rise and fall rate 74HC368 74HCT368 Unit Min Typ Max Min Typ Max 2.0 5.0 6.0 4.5 5.0 5.5 V 0 - VCC 0 - VCC V 0 - VCC 0 - VCC V -40 +25 +125 -40 +25 +125 °C 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 Min Typ Max Min Max VCC = 2.0 V 1.5 1.2 VCC = 4.5 V 3.15 2.4 - 1.5 - 3.15 VCC = 6.0 V 4.2 3.2 - VCC = 2.0 V - 0.8 VCC = 4.5 V - VCC = 6.0 V - -40 °C to +125 °C Unit Min Max - 1.5 - V - 3.15 - V 4.2 - 4.2 - V 0.5 - 0.5 - 0.5 V 2.1 1.35 - 1.35 - 1.35 V 2.8 1.8 - 1.8 - 1.8 V 74HC368 VIH VIL HIGH-level input voltage LOW-level input voltage 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 4 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting Symbol Parameter VOH VOL HIGH-level output voltage LOW-level output voltage Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max 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 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 VI = VIH or VIL 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 μA ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 - 160 μA CI input capacitance - 3.5 - - - - - pF 74HCT368 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 HIGH-level output voltage VI = VIH or VIL; VCC = 4.5 V IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V IO = -6 mA 3.98 4.32 - 3.84 - 3.7 - V VOL LOW-level output voltage VI = VIH or VIL; VCC = 4.5 V IO = 20 μA - 0 0.1 - 0.1 - 0.1 V IO = 6.0 mA - 0.16 0.26 - 0.33 - 0.4 V 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; VCC = 5.5 V; IO = 0 A - - 8.0 - 80 - 160 μA ΔICC additional supply current per input pin; VI = VCC - 2.1 V; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; IO = 0 A 1OE, nA inputs - 100 360 - 450 - 490 μA 2OE inputs - 90 324 - 405 - 441 μA - 3.5 - - - - - pF CI input capacitance 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 5 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 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 Max Max VCC = 2.0 V - 30 95 120 145 ns VCC = 4.5 V - 11 19 24 29 ns VCC = 5.0 V; CL = 15 pF - 9 - - - ns - 9 16 20 25 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 - 55 150 190 225 ns VCC = 4.5 V - 20 30 38 45 ns VCC = 6.0 V - 16 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 - 30 - - - pF VCC = 4.5 V - 13 24 30 36 ns VCC = 5.0 V; CL = 15 pF - 11 - - - ns 74HC368 propagation delay nA to nY; see Fig. 6 tpd [1] VCC = 6.0 V ten enable time tdis disable time tt transition time CPD power dissipation capacitance nOE to nY; see Fig. 7 nOE to nY; see Fig. 7 see Fig. 6 [2] [3] [4] per buffer; VI = GND to VCC [5] 74HCT368 propagation delay nA to nY; see Fig. 6 tpd [1] ten enable time nOE to nY; VCC = 4.5 V; see Fig. 7 [2] - 17 35 44 53 ns tdis disable time nOE to nY; VCC = 4.5 V; see Fig. 7 [3] - 20 35 44 53 ns tt transition time VCC = 4.5 V; see Fig. 6 [4] - 5 12 15 18 ns CPD power dissipation capacitance per buffer; VI = GND to VCC - 1.5 V [5] - 30 - - - pF [1] [2] [3] [4] [5] tpd is the same as tPHL and tPLH. ten is the same as tPZH and tPZL. tdis is the same as tPHZ and tPLZ. tt is the same as tTHL and tTLH. CPD is used to determine the dynamic power dissipation (PD in μW): 2 2 PD = CPD × VCC × fi × N + ∑ (CL × VCC × 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 ∑ (CL × VCC × fo) = sum of outputs. 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 6 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 10.1. Waveforms and test circuit VI VM nA input VM GND tPHL VOH 90 % tPLH VM nY output VM 10 % VOL tTHL tTLH aaa-024304 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig. 6. Input (nA) to output (nY) propagation delays and output transition times VI nOE input VM GND tPLZ nY output LOW-to-OFF OFF-to-LOW tPZL VCC VM VX VOL tPHZ VOH tPZH VY nY output HIGH-to-OFF OFF-to-HIGH GND VM outputs enabled outputs disabled outputs enabled aaa-024305 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 enable and disable times Table 8. Measurement points Input Type Output VM VM VX VY 74HC368 0.5 × VCC 0.5 × VCC 0.1 × VCC 0.9 × VCC 74HCT368 1.3 V 1.3 V 0.1 × VCC 0.9 × VCC 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 7 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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 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. S1 = Test selection switch. Fig. 8. Test circuit for measuring switching times Table 9. Test data Type Input Load S1 position VI tr, tf CL RL tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 74HC368 VCC 6 ns 15 pF, 50 pF 1 kΩ open GND VCC 74HCT368 3V 6 ns 15 pF, 50 pF 1 kΩ open GND VCC 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 8 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 9 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 10 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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_HCT368 v.4 20210805 Product data sheet - 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. Type numbers 74HC368DB and 74HCT368DB (SOT338-1) removed. Type numbers 74HC368PW (SOT403-1) added. Section 2 updated. Section 7: Derating values for Ptot total power dissipation updated. 74HC_HCT368 v.3 20160809 Modifications: • • • 74HC_HCT368_CNV v.2 74HC_HCT368 Product data sheet 74HC_HCT368 v.3 Product data sheet - 74HC_HCT368_CNV v.2 The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. Legal texts have been adapted to the new company name where appropriate. Type numbers 74HC368N and 74HCT368N removed. 19901201 Product specification - All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 - © Nexperia B.V. 2021. All rights reserved 11 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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. 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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_HCT368 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. 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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. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 12 / 13 74HC368; 74HCT368 Nexperia Hex buffer/line driver; 3-state; inverting 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............................................................. 3 6. Functional description................................................. 3 7. Limiting values............................................................. 4 8. Recommended operating conditions..........................4 9. Static characteristics....................................................4 10. Dynamic characteristics............................................ 6 10.1. Waveforms and test circuit........................................ 7 11. Package outline.......................................................... 9 12. Abbreviations............................................................ 11 13. Revision history........................................................11 14. Legal information......................................................12 © 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: 5 August 2021 74HC_HCT368 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 August 2021 © Nexperia B.V. 2021. All rights reserved 13 / 13