74AHC244BQ Nexperia

74AHC244 74AHCT244 Octal buffer/line driver 3-state Rev. 05 20 December 2007 Product data sheet 1. General description The 74AHC244 74AHCT244 is a high-speed Si-gate CMOS device. The 74AHC244 74AHCT244 has octal non-inverting buffer/line drivers with 3-state outputs. The 3-state outputs are controlled by the output enable inputs (nOE). A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. 2. Features Balanced propagation delays All inputs have a Schmitt-trigger action Inputs accepts voltages higher than V CC For 74AHC244 only: operates with CMOS input levels For 74AHCT244 only: operates with TTL input levels ESD protection: HBM JESD22-A114E exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101C exceeds 1000 V Multiple package options Specied 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 20 leads SOT360-1 body width 4.4 mm 74AHCT244PW 74AHC244BQ - 40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced SOT764-1 very thin quad at package no leads 20 terminals 74AHCT244BQ body 2.5 4.5 0.85 mm74AHC244 74AHCT244 NXP Semiconductors 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 2A3 2Y3 11 9 2OE 19 mna170 Fig 1. Functional diagram 1 EN 2 17 18 3 18 2 1A0 1Y0 2A0 2Y0 16 4 4 15 14 16 5 6 1A1 1Y1 2A1 2Y1 8 12 6 13 14 7 1A2 2A2 1Y2 2Y2 19 EN 8 12 11 9 1A3 1Y3 2A3 2Y3 11 9 1 19 7 1OE 2OE 13 mna874 15 5 17 3 mna873 Fig 2. Logic symbol Fig 3. IEC logic symbol 74AHC AHCT244 5 NXP B.V. 2007. All rights reserved. Product data sheet Rev. 05 20 December 2007 2 of 16