74LVC244ABQ,115

74LVC244A 74LVCH244A Octal buffer/line driver 3-state Rev. 12 16 September 2021 Product data sheet 1. General description The 74LVC244A 74LVCH244A are 8-bit buffer/line drivers with 3-state outputs. The devices can be used as two 4-bit buffers or one 8-bit buffer. Both devices 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 can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments. Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times. This device is fully specified for partial power down applications using I . The I circuitry OFF OFF disables the output, preventing the potentially damaging backflow current through the device when it is powered down. 2. Features and benefits Wide supply voltage range from 1.2 V to 3.6 V CMOS low-power consumption Direct interface with TTL levels Overvoltage tolerant inputs to 5.5 V I circuitry provdes partial Power-down mode operation OFF Bus hold on all data inputs (74LVCH244A only) Complies with JEDEC standard: JESD8-7A (1.65 V to 1.95 V) JESD8-5A (2.3 V to 2.7 V) JESD8-C/JESD36 (2.7 V to 3.6 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115B exceeds 200 V CDM JESD22-C101E exceeds 1000 V Specified from -40 C to +85 C and -40 C to +125 CNexperia 74LVC244A 74LVCH244A Octal buffer/line driver 3-state 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LVC244AD -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74LVCH244AD 74LVC244APW -40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74LVCH244APW 74LVC244ABQ -40 C to +125 C DHVQFN20 plastic dual in-line compatible thermal SOT764-1 enhanced very thin quad flat package no leads 74LVCH244ABQ 20 terminals body 2.5 4.5 0.85 mm 74LVC244ABZ -40 C to +125 C DHXQFN20 plastic, leadless dual in-line compatible thermal SOT8020-1 enhanced extreme thin quad flat package no leads 20 terminals 0.4 mm pitch body 2 mm 3.2 mm 0.48 mm 4. Functional diagram 1A0 1Y0 2 18 1A1 1Y1 4 16 1Y2 1A2 6 14 1A3 1Y3 1 8 12 EN 1OE 1 18 2 4 16 2A0 2Y0 17 3 6 14 12 8 2A1 2Y1 15 5 19 EN 2A2 2Y2 13 7 9 11 2Y3 2A3 11 9 7 13 5 15 2OE 19 3 17 mna873 mna875 Fig. 1. IEC logic diagram Fig. 2. Functional diagram 74LVC LVCH244A All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 12 16 September 2021 2 / 17