HEF4043B Quad R/S latch with 3-state outputs Rev. 13 8 December 2021 Product data sheet 1. General description The HEF4043B is a quad R/S latch with 3-state outputs and common output enable input (OE). Each latch has set (nS), and reset (nR) inputs and a 3-state output (nQ). When OE is LOW, the latch outputs are in the high impedance OFF-state. OE does not affect the state of the latch. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V . DD 2. Features and benefits Wide supply voltage range from 3.0 to 15.0 V CMOS low power dissipation High noise immunity Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics Complies with JEDEC standard JESD 13-B ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 ) Specified from -40 C to +85 C 3. Applications Four-bit storage with output enable 4. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version HEF4043BT -40 C to +85 C SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mmNexperia HEF4043B Quad R/S latch with 3-state outputs 5. Functional diagram 4 1S 1Q 2 3 1R 6 2S 2Q 9 7 2R 3-STATE nS nQ OUTPUTS 12 3S 3Q 10 11 3R 14 4S nR 4Q 1 15 4R OE 5 OE to other latches 001aae616 001aae618 Fig. 1. Functional diagram Fig. 2. Logic diagram for one latch 6. Pinning information 6.1. Pinning HEF4043B 4Q 1 16 V DD 1Q 2 15 4R 1R 3 14 4S 1S 4 13 n.c. OE 5 12 3S 2S 6 11 3R 7 10 2R 3Q V 8 9 2Q SS 001aae617 Fig. 3. Pin configuration SOT109-1 (SO16) HEF4043B All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 13 8 December 2021 2 / 11