HEF40244BT,653 Nexperia

HEF40244B Octal buffers with 3-state outputs Rev. 4 29 June 2018 Product data sheet 1 General description The HEF40244B is an octal non-inverting buffer with 3-state outputs. It features output stages with high current output capability suitable for driving highly capacitive loads. The 3-state outputs are controlled by the output enable inputs EOA and EOB. A HIGH on EOA or EOB causes the outputs to assume a high impedance OFF-state. The device also features hysteresis on all inputs to improve noise immunity. Schmitt-trigger action in the inputs makes the circuit highly tolerant to slower input rise and fall times. 2 Features and benefits Octal bus interface 3-state buffers Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics Specified from 40 C to +85 C 3 Ordering information Table 1.Ordering information Type number Package Temperature range Name Description Version HEF40244BT -40 C to +85 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mmNexperia HEF40244B Octal buffers with 3-state outputs 4 Functional diagram IA1 OA1 2 18 IA2 OA2 4 16 IA3 OA3 6 14 IA4 OA4 8 12 1 EN EOA 1 2 18 4 16 IB1 OB1 11 9 6 14 8 12 IB2 OB2 13 7 19 EN IB3 OB3 15 5 9 11 I O IB4 OB4 13 7 17 3 15 5 3 17 EO EOB 19 aaa-028680 mna826 aaa-028681 Figure 1.Logic symbol Figure 2.IEC logic symbol Figure 3.Logic diagram (one buffer) 5 Pinning information 5.1 Pinning HEF40244B 1 20 EOA V DD 2 19 IA1 EOB 3 18 OB4 OA1 4 17 IA2 1B4 5 16 OB3 OA2 6 15 IA3 IB3 7 14 OB2 OA3 8 13 IA4 IB2 9 12 OB1 OA4 10 11 V IB1 SS aaa-028682 Figure 4.Pin configuration for SO20 HEF40244B All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2018. All rights reserved. Product data sheet Rev. 4 29 June 2018 2 / 14