74HC540; 74HCT540 Octal buffer/line driver; 3-state; inverting Rev. 4 -- 1 March 2016 Product data sheet 1. General description The 74HC540; 74HCT540 is an 8-bit inverting buffer/line driver with 3-state outputs. The device features two output enables (OE1 and OE2). A HIGH on OEn causes the outputs to assume a high-impedance OFF-state. 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 Inverting outputs Complies with JEDEC standard no. 7A Input levels: For 74HC540: CMOS level For 74HCT540: TTL level 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 from 40 C to +125 C 3. Ordering information Table 1. Ordering information Type number 74HC540D Package 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 74HCT540D 74HC540DB 74HCT540DB 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting 4. Functional diagram $ < $ < $ < $ < $ < $ < $ $ Product data sheet Logic symbol 74HC_HCT540 < (1 2( 2( Fig 1. < DDD DDD Fig 2. IEC logic symbol All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 2 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting $ < $ < $ < $ < $ < $ < $ < $ < 2( 2( DDD Fig 3. Functional diagram 74HC_HCT540 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 3 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting 21(%8))(5/,1('5,9(5 9&& $ < 2( *1' 2( $ < $ < $ < $ < $ < $ < $ < HLJKWLGHQWLFDOFLUFXLWV Fig 4. DDD Logic diagram 74HC_HCT540 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 4 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting 5. Pinning information 5.1 Pinning +& +&7 2( 9&& $ 2( $ < $ < $ < $ < $ < $ < $ < *1' < DDD Fig 5. Pin configuration SO20 and SSOP20 5.2 Pin description Table 2. Pin description Symbol Pin Description OE1 1 output enable input (active LOW) A0 to A7 2, 3, 4, 5, 6, 7, 8, 9 data input GND 10 ground (0 V) Y0 to Y7 18, 17, 16, 15, 14, 13, 12, 11 data output OE2 19 output enable input (active LOW) VCC 20 supply voltage 6. Functional description Table 3. Functional table[1] Control Input Output OE1 OE2 An Yn L L L H L L H L X H X Z H X X Z [1] H = HIGH voltage level; L = LOW voltage level; X = don't care; Z = high-impedance OFF-state. 74HC_HCT540 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 5 of 17 74HC540; 74HCT540 Nexperia Octal 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 VCC supply voltage Conditions Min Max Unit 0.5 +7 V - 20 mA - 20 mA - 35 mA 70 mA IIK input clamping current VI < 0.5 V or VI > VCC + 0.5 V [1] IOK output clamping current VO < 0.5 V or VO > VCC + 0.5 V [1] IO output current 0.5 V < VO < VCC + 0.5 V ICC supply current - IGND ground current 70 - mA Tstg storage temperature 65 +150 C - 500 mW total power dissipation Ptot [2] SO20, SSOP20 [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] For SO20 packages: above 70 C the value of Ptot derates linearly with 8 mW/K. For SSOP20 packages: above 60 C the value of Ptot derates linearly with 5.5 mW/K. 8. Recommended operating conditions Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V) Symbol Parameter VCC supply voltage Conditions 74HC540 74HCT540 Unit Min Typ Max Min Typ Max 2.0 5.0 6.0 4.5 5.0 5.5 V 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 t/V input transition rise and fall rate - - 625 - - - VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V VCC = 6.0 V - - 83 - - - ns/V 74HC_HCT540 Product data sheet VCC = 2.0 V All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) ns/V Nexperia B.V. 2017. All rights reserved 6 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting 9. Static characteristics Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Tamb = 25 C Conditions Tamb = 40 C to +85 C Tamb = 40 C to +125 C Min Typ Max Min Max Min Max Unit 74HC540 VIH VIL VOH VOL HIGH-level input voltage 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 LOW-level input voltage 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 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 A HIGH-level output voltage LOW-level output voltage VI = VIH or VIL VI = VIH or VIL II input leakage current VI = VCC or GND; VCC = 6.0 V - - 0.1 - 1.0 - 1.0 IOZ OFF-state output current VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND - 0.5 - 5.0 - 10 - 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 A 74HCT540 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 A 4.4 4.5 - 4.4 - 4.4 - V IO = 6.0 mA 3.98 4.32 - 3.84 - 3.7 - V IO = 20 A; - 0 0.1 - 0.1 - 0.1 V IO = 6.0 mA; - 0.16 0.26 - 0.33 - 0.4 V VOL LOW-level output voltage 74HC_HCT540 Product data sheet VI = VIH or VIL; VCC = 4.5 V All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 7 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting Table 6. Static characteristics ...continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Tamb = 25 C Conditions Tamb = 40 C to +85 C Tamb = 40 C to +125 C Min Typ Max Min Max Min Max Unit II input leakage current VI = VCC or GND; VCC = 5.5 V - - 0.1 - 1.0 - 1.0 IOZ OFF-state output current VI = VIH or VIL; VCC = 5.5 V; VO = VCC or GND - - 0.5 - 5.0 - 10 ICC supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V - - 8.0 - 80 - 160 A ICC additional supply current per input pin; IO = 0 A; VI = VCC 2.1 V; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V An input - 140 504 - 630 - 686 A OE1 input - 150 540 - 675 - 735 A - 100 360 - 450 - 490 A - 3.5 - - - - - pF OE2 input CI input capacitance A A 10. Dynamic characteristics Table 7. Dynamic characteristics GND = 0 V; CL = 50 pF; for test circuit see Figure 8. Symbol Parameter Tamb = 25 C Conditions Tamb = 40 C to +125 C Unit Min Typ Max Max (85 C) Max (125 C) - 30 100 125 150 VCC = 4.5 V - 11 20 25 30 ns VCC = 5.0 V; CL = 15 pF - 9 - - - ns - 9 17 21 26 ns VCC = 2.0 V - 52 160 200 240 ns VCC = 4.5 V - 19 32 40 48 ns - 15 27 34 41 ns VCC = 2.0 V - 61 160 200 240 ns VCC = 4.5 V - 22 32 40 48 ns - 18 27 34 41 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 74HC540 tpd propagation delay An to Yn; see Figure 6 [1] VCC = 2.0 V VCC = 6.0 V ten enable time OEn to Yn; see Figure 7 [1] VCC = 6.0 V tdis disable time OEn to Yn; see Figure 7 [1] VCC = 6.0 V tt transition time 74HC_HCT540 Product data sheet see Figure 6 ns [2] All information provided in this document is subject to legal disclaimers. Rev. 4 -- 1 March 2016 (c) Nexperia B.V. 2017. All rights reserved 8 of 17 74HC540; 74HCT540 Nexperia Octal buffer/line driver; 3-state; inverting Table 7. Dynamic characteristics GND = 0 V; CL = 50 pF; for test circuit see Figure 8. Symbol Parameter CPD power dissipation capacitance Tamb = 25 C Conditions Unit Min Typ Max Max (85 C) Max (125 C) - 39 - - - pF - 13 24 30 36 ns - 11 - - - ns - 22 35 44 53 ns [3] per package; VI = GND to VCC Tamb = 40 C to +125 C 74HCT540 [1] propagation delay An to Yn; see Figure 6 tpd VCC = 4.5 V VCC = 5.0 V; CL = 15 pF enable time ten [1] OEn to Yn; see Figure 7 VCC = 4.5 V [1] tdis disable time OEn to Yn; see Figure 7 - 23 35 44 53 ns tt transition time VCC = 4.5 V; see Figure 6 [2] - 5 12 15 18 ns CPD power dissipation capacitance per package; VI = GND to VCC 1.5 V [3] - 44 - - - pF VCC = 4.5 V [1] tpd is the same as tPLH and tPHL. ten is the same as tPZL and tPZH. tdis is the same as tPLZ and tPHZ. [2] tt is the same as tTHL and tTLH. [3] CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD VCC2 fi N + (CL VCC2 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; (CL VCC2 fo) = sum of outputs. 11. Waveforms $QLQSXW 90 W3+/ W3/+