HEF4043BT: Quad R/S latch with 3-state outputs

The HEF4043B is a quad R/S latch with 3-state outputs with a common output enable input (OE). Each latch has an active HIGH set input (1S to 4S), an active HIGH reset input (1R to 4R) and an active HIGH 3-state output (1Q to 4Q).

When OE is HIGH, the latch output (nQ) is determined by the nR and nS inputs. When OE is LOW, the latch outputs are in the high impedance OFF-state. OE does not affect the state of the latch. The high impedance off-state feature allows common bussing of the outputs.

It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.

sot109-1_3d
Data Sheets (1)
Name/DescriptionModified Date
Quad R/S latch with 3-state outputs (REV 11.0) PDF (139.0 kB) HEF4043B [English]24 Mar 2016
Application Notes (2)
Name/DescriptionModified Date
Pin FMEA HEF4000 family (REV 2.0) PDF (30.0 kB) AN11051 [English]21 Aug 2015
A metastability primer (REV 1.0) PDF (40.0 kB) AN219 [English]13 Mar 2013
Brochures (2)
Name/DescriptionModified Date
電圧レベルシフタ (REV 1.1) PDF (3.1 MB) 75017511_JP [English]16 Feb 2015
Voltage translation: How to manage mixed-voltage designs with NXP® level translators (REV 1.0) PDF (2.6 MB) 75017511 [English]20 May 2014
Package Information (1)
Name/DescriptionModified Date
plastic small outline package; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English]08 Feb 2016
Supporting Information (2)
Name/DescriptionModified Date
Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English]08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]08 Oct 2009
Ordering Information
ProductStatusFamilyFunctionVCC (V)Logic switching levelsDescriptionPackage versionOutput drive capability (mA)tpd (ns)No of bitsPower dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package nameNo of pins
HEF4043BTActiveHEF4000BLatches/registered drivers4.5 - 15CMOSquad R/S latch with set and reset (3-state)SOT109-1+/- 2.4254medium-40~85835.642.1SO1616
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
HEF4043BTSOT109-1SO-SOJ-REFLOW SO-SOJ-WAVE
SO-SOJ-REFLOW SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActiveHEF4043BT,653 (9333 728 80653)HEF4043BTHEF4043BTweek 6, 200475.32.993.34E811
Bulk Pack, CECCActiveHEF4043BT,652 (9333 728 80652)HEF4043BTHEF4043BTweek 6, 200475.32.993.34E811
Quad R/S latch with 3-state outputs HEF4043BT
Pin FMEA HEF4000 family HEF4894B_Q100
A metastability primer 74AHC573PW
電圧レベルシフタ 74AVC16245DGG-Q100
Voltage translation: How to manage mixed-voltage designs with NXP® level translators 74AVC16245DGG-Q100
plastic small outline package; 16 leads; body width 3.9 mm NPIC6C596A_Q100
Footprint for reflow soldering NPIC6C596A_Q100
Footprint for wave soldering NPIC6C596A_Q100
SA614A