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Partno	Mfg	Dc	Qty	Available	Descript
74LV244D	NXP	N/a	28	avai	Octal buffer/line driver (3-state)

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74LV244D
Octal buffer/line driver (3-state)
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 ESD protection: HBM JESD22-A114F exceeds 2000V MM JESD22-A115-A exceeds 200V
3. Ordering information
74L V244
Octal buffer/line driver (3-state)
Rev. 3 — 11 March 2014 Product data sheet
Table 1. Ordering information
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
4. Block diagram
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
5. Pinning information
5.1 Pinning
5.2 Pin description
6. Functional description
[1] H= HIGH voltage level; L= LOW voltage level; X= don’t care; Z= high-impedance OFF-state.
Table 2. Pin description
Table 3. Function table[1]
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
7. Limiting values
[1] For DIP20 package: Ptot derates linearly with 12 mW/K above 70C.
[2] For SO20 packages: Ptot derates linearly with 8 mW/K above 70C.
[3] For SSOP20 and TSSOP20 packages: Ptot derates linearly with 5.5 mW/K above 60C.
8. Recommended operating conditions
[1] 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.
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Table 5. Operating conditions
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
9. Static characteristics
[1] All typical values are measured at Tamb = 25 C.
Table 6. Static characteristics
Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
10. Dynamic characteristics
[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  VCC 2  fi + (CL  VCC 2  fo) (PD in W), where:
fi = input frequency in MHz;
fo = output frequency in MHz;
 (CL  VCC 2  fo) = sum of outputs;
CL = output load capacitance in pF;
VCC = supply voltage in V.
Table 7. Dynamic characteristics
GND (ground = 0 V); for test circuit, see Figure7
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
11. Waveforms
Table 8. Measurement points
NXP Semiconductors 74LV244
Octal buffer/line driver (3-state)
Table 9. Test data

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