Philips 40244 free download

File name 40244.pdf

INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: · The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC · The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF40244B buffers Octal buffers with 3-state outputs Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification Octal buffers with 3-state outputs 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 EO 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. The HEF40244B is pin and functionally compatible with the TTL `244' device. HEF40244B buffers Fig.2 Pinning diagram. HEF40244BP(N): 20-lead DIL; plastic (SOT146-1) HEF40244BD(F): 20-lead DIL; ceramic (cerdip) (SOT152) HEF40244BT(D): 20-lead SO; plastic (SOT163-1) ( ): Package Designator North America PINNING IA1 to IA4 IB1 to IB4 OA1 to OA4 OB1 to OB4 EOA, EOB inputs inputs bus outputs bus outputs output enable inputs (active LOW) FAMILY DATA, IDD LIMITS category buffers See Family Specifications Fig.1 Functional diagram. January 1995 2 Philips Semiconductors Product specification Octal buffers with 3-state outputs TRUTH TABLE INPUTS In H L X Notes EO L L H HEF40244B buffers OUTPUT On H L Z Fig.3 Logic diagram (one buffer). 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial Z = high impedance off state RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134). See Family Specifications, except for: D.C. current into any input D.C. source or sink current into any output D.C. current into the supply terminals DC CHARACTERISTICS VSS = 0 V VDD V VOH V VOL V SYMBOL Tamb (°C) -40 MIN. Output current HIGH Output current HIGH Output current LOW Hysteresis voltage (any input) 5 10 15 5 10 15 5 10 15 5 10 15 VH 4,6 9,5 13,5 3,6 8,4 13,2 0,4 0,5 IOL 1,5 -IOH -IOH 0,75 1,85 14,5 9,3 14,4 19,5 2,9 9,5 30,0 TYP. +25 MIN. 0,6 1,5 15 10 15 20 2,3 7,6 25 TYP. 1,2 3,0 50 24 46 62 5,4 17 45 220 250 320 +85 MIN. 0,45 1,1 15,5 10,7 15,0 19,8 1,75 5,50 19,0 TYP. mA mA mA mA mA mA mA mA mA mV mV mV ± II ± IO ±I max. max. max. 10 mA 25 mA 100 mA January 1995 3 Philips Semiconductors Product specification Octal buffers with 3-state outputs HEF40244B buffers (1) P-channel MOS transistor conducting. (2) P-channel MOS transistor and bipolar n-p-n transistor conducting. Fig.4 Typical output source current characteristic. Fig.5 Schematic diagram of output stage. AC CHARACTERISTICS VSS = 0 V; Tamb = 25 °C; input transition times 20 ns ALL BUFFER