74LV244 Octal buffer/line driver; 3-state Rev. 4 -- 1 March 2016 Product data sheet 1. General description The 74LV244 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC244 and 74HCT244. The 74LV244 is an octal non-inverting buffer/line driver with 3-state outputs. The output enable inputs 1OE and 2OE control the 3-state outputs. A HIGH on nOE causes the outputs to assume a high impedance OFF-state. The 74LV244 is identical to the 74LV240 but has non-inverting outputs. 2. Features and benefits Wide operating voltage: 1.0 V to 5.5 V Optimized for low voltage applications: 1.0 V 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; Tamb = 25 C Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V; Tamb = 25 C Complies with JEDEC standard no. 7A Multiple package options ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LV244D 40 C to +125 C SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 74LV244DB 40 C to +125 C SSOP20 plastic shrink small outline package; 20 leads; body width 5.3 mm 74LV244PW 40 C to +125 C TSSOP20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT339-1 SOT360-1 74LV244 Nexperia Octal buffer/line driver; 3-state 4. Block diagram $ < $ < $ < $ < 2( $ < $ < $ < $ < 2( PQD Fig 1. Functional diagram $ $ < $ < $ < < $ $ 2( < $ < $ 2( (1 < < (1 PQD Fig 2. Logic symbol 74LV244 Product data sheet PQD Fig 3. 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 15 74LV244 Nexperia Octal buffer/line driver; 3-state 5. Pinning information 5.1 Pinning /9 2( $ 9&& 2( < < $ $ < < $ $ < < $ $ < < *1' $ DDD Fig 4. Pin configuration SO20, SSOP20 and TSSOP20 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[1] Input Output nOE nAn nYn L L L L H H H X Z [1] H = HIGH voltage level; L = LOW voltage level; X = don't care; Z = high-impedance OFF-state. 74LV244 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 15 74LV244 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 VCC supply voltage 0.5 +7.0 V 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 - 50 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 Tamb = 40 C to +125 C SO20 [1] - 500 mW SSOP20 and TSSOP20 [2] - 400 mW [1] For SO20 packages: Ptot derates linearly with 8 mW/K above 70 C. [2] For SSOP20 and TSSOP20 packages: Ptot derates linearly with 5.5 mW/K above 60 C. 8. Recommended operating conditions Table 5. Symbol Operating conditions Parameter VCC supply voltage Conditions [1] Min Typ Max Unit 1.0 3.3 5.5 V VI input voltage 0 - VCC V VO output voltage 0 - VCC V Tamb ambient temperature 40 - +85 C 40 - +125 C t/V [1] input transition rise and fall VCC = 1.0 V to 2.0 V rate VCC = 2.0 V to 2.7 V 0 - 500 ns/V 0 - 200 ns/V VCC = 2.7 V to 3.6 V 0 - 100 ns/V VCC = 3.6 V to 5.5 V 0 - 50 ns/V The LV is guaranteed to function down to VCC = 1.0 V (input levels GND or VCC). DC characteristics are guaranteed from VCC = 1.2 V to VCC = 5.5 V. 74LV244 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 15 74LV244 Nexperia Octal buffer/line driver; 3-state 9. Static characteristics Table 6. Static characteristics Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V). Symbol Parameter HIGH level input voltage VIH LOW level input voltage VIL VOH 40 C to +85 C Conditions 40 C to +125 C Unit Min Typ[1] Max Min VCC = 1.2 V 0.9 - - 0.9 V VCC = 2.0 V 1.4 - - 1.4 V VCC = 2.7 V to 3.6 V 2.0 - - 2.0 V VCC = 4.5 V to 5.5 V 0.7VCC - - 0.7VCC V Max VCC = 1.2 V - - 0.3 0.3 V VCC = 2.0 V - - 0.6 0.6 V VCC = 2.7 V to 3.6 V - - 0.8 0.8 V VCC = 4.5 V to 5.5 V - - 0.3VCC 0.3VCC V - 1.2 - - - V VCC = 2.0 V 1.8 2.0 - 1.8 - V VCC = 2.7 V 2.5 2.7 - 2.5 - V VCC = 3.0 V 2.8 3.0 - 2.8 - V VCC = 4.5 V 4.3 4.5 - 4.3 - V VCC = 3.0 V; IO = 8 mA 2.40 2.82 - 2.20 - V VCC = 4.5 V; IO = 16 mA 3.60 4.20 - 3.50 - V - 0 - - - V VCC = 2.0 V - 0 0.2 - 0.2 V VCC = 2.7 V - 0 0.2 - 0.2 V VCC = 3.0 V - 0 0.2 - 0.2 V VCC = 4.5 V - 0 0.2 - 0.2 V VCC = 3.0 V; IO = 8 mA - 0.25 0.40 - 0.50 V HIGH level VI = VIH or VIL; IO = 100 A output voltage VCC = 1.2 V VI = VIH or VIL LOW level VI = VIH or VIL; IO = 100 A output voltage VCC = 1.2 V VOL VCC = 4.5 V; IO = 16 mA - 0.35 0.55 - 0.65 V II input leakage current VCC = 5.5 V; VI = VCC or GND - - 1.0 - 1.0 A IOZ 3-State output OFF-state current VCC = 3.6 V; VI = VIH or VIL; VO = VCC or GND - - 5 - 10 A ICC supply current VCC = 5.5 V; VI = VCC or GND; IO = 0 A - - 20 - 160 A ICC additional per input; VCC = 2.7 V to 3.6 V; supply current VI = VCC 0.6 V - - 500 - 850 A CI input capacitance - 3.5 - - - pF [1] All typical values are measured at Tamb = 25 C. 74LV244 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 15 74LV244 Nexperia Octal buffer/line driver; 3-state 10. Dynamic characteristics Table 7. Dynamic characteristics GND (ground = 0 V); for test circuit, see Figure 7 Symbol Parameter propagation delay tpd 40 C to +85 C Conditions Min Typ[1] VCC = 1.2 V - 50 VCC = 2.0 V - 17 VCC = 2.7 V - VCC = 3.0 V to 3.6 V - VCC = 3.3 V; CL = 15 pF Min Max - - ns 24 - 31 ns 13 17 - 23 ns 9 14 - 18 ns - 8 - - - ns - - 12 - 15 ns VCC = 1.2 V - 65 - - - ns VCC = 2.0 V - 22 39 - 49 ns 1An to 1Yn; 2An to 2Yn; see Figure 5 enable time 1OE to 1Yn; 2OE to 2Yn; see Figure 6 [2] VCC = 2.7 V - 16 29 - 36 ns VCC = 3.0 V to 3.6 V - 12 23 - 29 ns - - 19 - 24 ns VCC = 1.2 V - 60 - - ns VCC = 2.0 V - 22 34 - 43 ns VCC = 2.7 V - 17 24 - 32 ns VCC = 3.0 V to 3.6 V - 13 21 - 26 ns VCC = 4.5 V to 5.5 V - - 16 - 19 ns - 35 - - - ns VCC = 4.5 V to 5.5 V disable time tdis power dissipation capacitance CPD Max [2] VCC = 4.5 V to 5.5 V ten 40 C to +125 C Unit 1OE to 1Yn; 2OE to 2Yn; see Figure 6 VI = GND to VCC; VCC = 3.3 V [2] [3] [1] Unless otherwise stated, all typical values are measured at Tamb = 25 C and nominal VCC. [2] tpd is the same as tPLH and tPHL. ten is the same as tPZL and tPZH. tdis is the same as tPLZ and tPHZ. [3] CPD is used to determine the dynamic power dissipation PD = CPD VCC2 fi + (CL VCC2 fo) (PD in W), where: fi = input frequency in MHz; fo = output frequency in MHz; (CL VCC2 fo) = sum of outputs; CL = output load capacitance in pF; VCC = supply voltage in V. 74LV244 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 6 of 15 74LV244 Nexperia Octal buffer/line driver; 3-state 11. Waveforms 9, Q$QLQSXW *1' 90 90 W3/+ W3+/ 92+ 90 Q