74VHC244BQ,115 Nexperia

74VHC244 74VHCT244 Octal buffer/line driver 3-state Rev. 01 17 August 2009 Product data sheet 1. General description The 74VHC244 74VHCT244 are a high-speed Si-gate CMOS devices. The 74VHC244 74VHCT244 have 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 n Balanced propagation delays n All inputs have a Schmitt-trigger action n Inputs accepts voltages higher than V CC n Input levels: u The 74VHC244 operates with CMOS input level u The 74VHCT244 operates with TTL input level n ESD protection: u HBM JESD22-A114E exceeds 2000 V u MM JESD22-A115-A exceeds 200 V u CDM JESD22-C101C exceeds 1000 V n Multiple package options n 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 74VHC244D -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74VHCT244D 74VHC244PW -40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74VHCT244PW 74VHC244BQ -40 C to +125 C DHVQFN20 plastic dual-in-line compatible thermal enhanced SOT764-1 very thin quad at package no leads 20 terminals 74VHCT244BQ body 2.5 4.5 0.85 mm74VHC244 74VHCT244 Nexperia 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 18 2 16 4 14 6 2 17 18 3 1A0 1Y0 2A0 2Y0 8 12 4 15 16 5 1A1 1Y1 2A1 2Y1 19 EN 6 13 14 7 1A2 2A2 1Y2 2Y2 11 9 7 13 8 12 11 9 1A3 1Y3 2A3 2Y3 15 5 1 19 17 3 1OE 2OE mna874 mna873 Fig 2. Logic symbol Fig 3. IEC logic symbol 74VHC VHCT244 1 Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 01 17 August 2009 2 of 16