74HC244; 74HCT244 Octal buffer/line driver; 3-state Rev. 6 -- 27 September 2019 Product data sheet 1. General description The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits * * * * * * * Input levels: * For 74HC244: CMOS level * For 74HCT244: TTL level Octal bus interface Non-inverting 3-state outputs Complies with JEDEC standard no. 7 A ESD protection: * HBM JESD22-A114F exceeds 2000 V * MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +85 C and -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package 74HC244D Temperature range Name Description Version -40 C to +125 C SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 -40 C to +125 C SSOP20 plastic shrink small outline package; 20 leads; body width 5.3 mm SOT339-1 -40 C to +125 C TSSOP20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1 -40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced very thin quad flat package; no leads; 20 terminals; body 2.5 x 4.5 x 0.85 mm 74HCT244D 74HC244DB 74HCT244DB 74HC244PW 74HCT244PW 74HC244BQ 74HCT244BQ SOT764-1 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 4. Functional diagram 2 4 6 8 1 17 15 13 11 19 1A0 1Y0 1A1 1Y1 1A2 1Y2 1A3 1Y3 18 16 14 12 1OE 2A0 2Y0 2A1 2Y1 2A2 2Y2 2A3 2Y3 3 5 7 9 2OE mna875 Fig. 1. Functional diagram 1 1A0 1A1 1A2 1A3 1OE 2 4 6 8 18 16 14 12 1 1Y0 2A0 1Y1 2A1 1Y2 2A2 1Y3 2A3 2OE 17 15 13 11 3 5 7 9 2Y0 2Y1 2 18 4 16 6 14 8 12 19 2Y2 2Y3 19 EN EN 11 9 13 7 15 5 17 3 mna874 Fig. 2. Logic symbol 74HC_HCT244 Product data sheet mna873 Fig. 3. IEC logic symbol All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 2 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 5. Pinning information 5.1. Pinning 1 terminal 1 index area 74HC244 74HCT244 1A0 2 19 2OE 2Y0 3 18 1Y0 1A1 4 17 2A0 2Y1 5 16 1Y1 1OE 1 20 VCC 1A2 6 15 2A1 1A0 2 19 2OE 2Y0 3 18 1Y0 2Y2 7 1A1 4 17 2A0 1A3 8 2Y1 5 16 1Y1 2Y3 9 1A2 6 15 2A1 2Y2 7 14 1Y2 1A3 8 13 2A2 2Y3 9 12 1Y3 GND 10 11 2A3 Pin configuration SOT163-1 (SO20), SOT339-1 (SSOP20) and SOT360-1 (TSSOP20) 14 1Y2 GND (1) 13 2A2 2A3 11 GND 10 12 1Y3 001aae012 Transparent top view (1) This is not a ground pin. There is no electrical or mechanical requirement to solder the pad. In case soldered, the solder land should remain floating or connected to GND. 001aae011 Fig. 4. 20 VCC 1OE 74HC244 74HCT244 Fig. 5. Pin configuration SOT764-1 (DHVQFN20) 5.2. Pin description Table 2. Pin description Symbol Pin Description 1OE, 2OE 1, 19 output enable input (active LOW) 1A0, 1A1, 1A2, 1A3 2, 4, 6, 8 data input 2Y0, 2Y1, 2Y2, 2Y3 3, 5, 7, 9 bus output GND 10 ground (0 V) 2A0, 2A1, 2A2, 2A3 17, 15, 13, 11 data input 1Y0, 1Y1, 1Y2, 1Y3 18, 16, 14, 12 bus output VCC 20 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 nAn nYn L L L L H H H X Z 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 3 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 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 Min Typ Max Unit [1] [1] For SOT163-1 (SO20) packages: Ptot derates linearly with 12.3 mW/K above 109 C. For SOT339-1 (SSOP20) packages: Ptot derates linearly with 10.0 mW/K above 100 C. For SOT360-1 (TSSOP20) packages: Ptot derates linearly with 10.0 mW/K above 100 C. For SOT764-1 (DHVQFN20) packages: Ptot derates linearly with 12.9 mW/K above 111 C. 8. Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Conditions 74HC244 VCC supply voltage 2.0 5.0 6.0 V VI input voltage 0 - VCC V VO output voltage 0 - VCC V t/V input transition rise and fall rate VCC = 2.0 V - - 625 ns/V VCC = 4.5 V - 1.67 139 ns/V ns/V VCC = 6.0 V Tamb ambient temperature - - 83 -40 - +125 C 4.5 5.0 5.5 V 0 - VCC V 0 - VCC V - 1.67 139 ns/V -40 - +125 C 74HCT244 VCC supply voltage VI input voltage VO output voltage t/V input transition rise and fall rate Tamb ambient temperature 74HC_HCT244 Product data sheet VCC = 4.5 V All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 4 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 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 74HC244 VIH VIL VOH VOL VCC = 2.0 V HIGH-level input voltage V = 4.5 V CC 1.5 1.2 - 1.5 - 1.5 - 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 LOW-level input voltage V = 4.5 V CC - 0.8 0.5 - 0.5 - 0.5 V - 2.1 1.35 - 1.35 - 1.35 V VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V IO = -20 A; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = -20 A; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V IO = -20 A; 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 IO = 20 A; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 20 A; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 20 A; 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 HIGH-level output voltage LOW-level output voltage VI = VIH or VIL VI = VIH or VIL II input leakage VI = VCC or GND; VCC = 6.0 V current - - 0.1 - 1.0 - 1.0 A IOZ OFF-state output current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - - 0.5 - 5.0 - 10 A ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 - 160 A CI input capacitance - 3.5 - - - - - pF 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 5 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 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 74HCT244 VIH HIGH-level VCC = 4.5 V to 5.5 V input voltage 2.0 1.6 - 2.0 - 2.0 - V VIL LOW-level VCC = 4.5 V to 5.5 V input voltage - 1.2 0.8 - 0.8 - 0.8 V VOH HIGH-level output voltage VI = VIH or VIL; VCC = 4.5 V IO = -20 A 4.4 4.5 - 4.4 - 4.4 - V IO = -6 mA 3.98 4.32 - 3.84 - 3.7 - V LOW-level output voltage VI = VIH or VIL; VCC = 4.5 V IO = 20 A - 0 0.1 - 0.1 - 0.1 V IO = 6.0 mA VOL - 0.16 0.26 - 0.33 - 0.4 V II input leakage VI = VCC or GND; VCC = 5.5 V current - - 0.1 - 1.0 - 1.0 A IOZ OFF-state output current VI = VIH or VIL; VCC = 5.5 V; VO = VCC or GND - - 0.5 - 5.0 - 10 A ICC supply current VI = VCC or GND; VCC = 5.5 V; IO = 0 A - - 8.0 - 80 - 160 A ICC 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 - 70 252 - 315 - 343 A CI input capacitance - 3.5 - - - - - pF 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 6 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 0 V; for test circuit see Fig. 8. Symbol Parameter Conditions -40 C to -40 C to Unit +85 C +125 C 25 C Min Typ Max Max Max VCC = 2.0 V - 30 110 145 165 ns VCC = 4.5 V - 11 22 28 33 ns VCC = 5.0 V; CL = 15 pF - 9 - - - ns - 9 19 24 28 ns VCC = 2.0 V - 36 150 190 225 ns VCC = 4.5 V - 13 30 38 45 ns VCC = 6.0 V - 10 26 33 38 ns VCC = 2.0 V - 39 150 190 225 ns VCC = 4.5 V - 14 30 38 45 ns VCC = 6.0 V - 11 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 - 35 - - - pF VCC = 4.5 V - 13 22 28 33 ns VCC = 5.0 V; CL = 15 pF - 11 - - - ns 74HC244 tpd propagation delay nAn to nYn; see Fig. 6 [1] VCC = 6.0 V ten enable time tdis disable time tt transition time CPD nOE to nYn; see Fig. 7 nOE to nYn; see Fig. 7 see Fig. 6 [2] [3] [4] power dissipation per buffer; VI = GND to VCC capacitance [5] 74HCT244 tpd propagation delay nAn to nYn; see Fig. 6 [1] ten enable time nOE to nYn; VCC = 4.5 V; see Fig. 7 [2] - 15 30 38 45 ns tdis disable time nOE to nYn; VCC = 4.5 V; see Fig. 7 [3] - 15 25 31 38 ns tt transition time VCC = 4.5 V; see Fig. 6 [4] - 5 12 15 18 ns CPD power dissipation per buffer; VI = GND to VCC - 1.5 V capacitance [5] - 35 - - - 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. 2 2 CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD x VCC x fi x N + (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; 2 N = number of inputs switching; (CL x VCC x fo) = sum of outputs. 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 7 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 10.1. Waveforms VI VM nAn input VM GND t PHL VOH 90 % VM VM nYn output t PLH 10 % VOL t THL t TLH 001aae013 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig. 6. Input (nAn) to output (nYn) propagation delays and output transition times VI nOE input VM GND t PLZ nYn output LOW-to-OFF OFF-to-LOW t PZL VCC VM VX VOL t PZH t PHZ nYn output HIGH-to-OFF OFF-to-HIGH VOH VY VM GND outputs enabled outputs disabled outputs enabled 001aae014 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 74HC244 0.5 x VCC 0.5 x VCC 0.1 x VCC 0.9 x VCC 74HCT244 1.3 V 1.3 V 0.1 x VCC 0.9 x VCC 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 8 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 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 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 VI tr, tf CL 74HC244 VCC 6 ns 74HCT244 3V 6 ns 74HC_HCT244 Product data sheet S1 position RL tPHL, tPLH tPZH, tPHZ tPZL, tPLZ 15 pF, 50 pF 1 k open GND VCC 15 pF, 50 pF 1 k open GND VCC All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 9 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state 11. Package outline SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 D E A X c y HE v M A Z 20 11 Q A2 A (A 3 ) A1 pin 1 index Lp L 1 10 e bp detail X w M 0 5 10 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 mm 2.65 0.3 0.1 2.45 2.25 0.25 0.49 0.36 0.32 0.23 13.0 12.6 7.6 7.4 1.27 10.65 10.00 1.4 1.1 0.4 1.1 1.0 0.25 0.25 0.1 0.9 0.4 inches 0.1 0.012 0.096 0.004 0.089 0.01 0.019 0.013 0.014 0.009 0.51 0.49 0.30 0.29 0.05 0.419 0.043 0.055 0.394 0.016 0.043 0.039 0.01 0.01 0.004 0.035 0.016 Z (1) 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 SOT163-1 075E04 MS-013 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Package outline SOT163-1 (SO20) 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 10 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm D SOT339-1 E A X c HE y v M A Z 20 11 Q A2 pin 1 index A (A 3) A1 Lp L 1 10 bp e detail X w M 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 7.4 7.0 5.4 5.2 0.65 7.9 7.6 1.25 1.03 0.63 0.9 0.7 0.2 0.13 0.1 0.9 0.5 8o 0o Note 1. Plastic or metal protrusions of 0.2 mm maximum per side are not included. OUTLINE VERSION SOT339-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 MO-150 Fig. 10. Package outline SOT339-1 (SSOP20) 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 11 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm D SOT360-1 E A X c HE y v M A Z 11 20 Q A2 pin 1 index (A 3 ) A1 A Lp 1 L 10 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) mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 6.6 6.4 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 0.5 0.2 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 SOT360-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 MO-153 Fig. 11. Package outline SOT360-1 (TSSOP20) 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 12 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 3-state DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 20 terminals; body 2.5 x 4.5 x 0.85 mm B D SOT764-1 A A A1 E c detail X terminal 1 index area terminal 1 index area e1 C e b 2 9 v w C A B C y1 C y L 1 10 Eh e 20 11 19 12 X Dh 0 2.5 5 mm scale Dimensions (mm are the original dimensions) Unit A(1) A1 b max 1.00 0.05 0.30 nom 0.90 0.02 0.25 min 0.80 0.00 0.18 mm c D(1) Dh E(1) Eh e e1 L v 0.2 4.6 4.5 4.4 3.15 3.00 2.85 2.6 2.5 2.4 1.15 1.00 0.85 0.5 3.5 0.5 0.4 0.3 0.1 w y 0.05 0.05 y1 0.1 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. References Outline version IEC JEDEC JEITA SOT764-1 --- MO-241 --- sot764-1_po European projection Issue date 03-01-27 14-12-12 Fig. 12. Package outline SOT764-1 (DHVQFN20) 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 13 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 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_HCT244 v.6 20190927 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. Table 4: Derating values for Ptot total power dissipation have been updated. 74HC_HCT244 v.5 20160226 Modifications: * 74HC_HCT244 v.4 20120924 Modifications: * * 74HC_HCT244 v.5 Product data sheet - 74HC_HCT244 v.4 Type numbers 74HC244N and 74HCT244N (SOT146-1) removed. Product data sheet - 74HC_HCT244 v.3 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. 74HC_HCT244 v.3 20051222 Product data sheet - 74HC_HCT244_CNV v.2 74HC_HCT244_CNV v.2 19901201 Product specification - - 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 14 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 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. 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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_HCT244 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. 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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. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 15 / 16 74HC244; 74HCT244 Nexperia Octal buffer/line driver; 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............................................................. 3 6. Functional description................................................. 3 7. Limiting values............................................................. 4 8. Recommended operating conditions..........................4 9. Static characteristics....................................................5 10. Dynamic characteristics............................................ 7 10.1. Waveforms.................................................................8 11. Package outline........................................................ 10 12. Abbreviations............................................................ 14 13. Revision history........................................................14 14. Legal information......................................................15 (c) Nexperia B.V. 2019. 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: 27 September 2019 74HC_HCT244 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 6 -- 27 September 2019 (c) Nexperia B.V. 2019. All rights reserved 16 / 16