74AHCT244BQ,115

74AHC244 74AHCT244 Octal buffer/line driver 3-state Rev. 6 2 July 2020 Product data sheet 1. General description The 74AHC244 74AHCT244 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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments. 2. Features and benefits Wide supply voltage range from 2.0 V to 5.5 V Balanced propagation delays All inputs have Schmitt-trigger action Overvoltage tolerant inputs to 5.5 V High noise immunity CMOS low power dissipation Input levels: For 74AHC244: CMOS level For 74AHCT244: TTL level ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101E exceeds 1000 V Latch-up performance exceeds 100 mA per JESD 78 Class II Level A 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 Package Temperature range Name Description Version 74AHC244D -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74AHCT244D 74AHC244PW -40 C to +125 C TSSOP20 plastic thin shrink small outline package SOT360-1 20 leads body width 4.4 mm 74AHCT244PW 74AHC244BQ -40 C to +125 C DHVQFN20 plastic dual in-line compatible thermal SOT764-1 enhanced very thin quad flat package no leads 74AHCT244BQ 20 terminals body 2.5 4.5 0.85 mmNexperia 74AHC244 74AHCT244 Octal buffer/line driver 3-state 4. Functional diagram 1A0 1Y0 2 18 1A1 1Y1 4 16 1A2 1Y2 6 14 1A3 1Y3 8 12 1OE 1 2A0 2Y0 17 3 2A1 2Y1 15 5 2A2 2Y2 13 7 2Y3 2A3 11 9 2OE 19 mna170 Fig. 1. Functional diagram 1 EN 18 2 16 4 14 6 2 17 18 3 1A0 1Y0 2A0 2Y0 12 8 4 15 16 5 1A1 1Y1 2A1 2Y1 19 EN 6 13 14 7 1A2 2A2 1Y2 2Y2 9 11 7 13 8 12 11 9 1A3 1Y3 2A3 2Y3 15 5 17 3 1 19 1OE 2OE mna874 mna873 Fig. 2. Logic symbol Fig. 3. IEC logic symbol 74AHC AHCT244 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2020. All rights reserved Product data sheet Rev. 6 2 July 2020 2 / 16