HEF4555B

1-of-4 decoder/demultiplexer

The HEF4555B contains two 1-of-4 decoders/demultiplexers. Each has two address inputs (nA0 and nA1, an active LOW enable input (nE) and four mutually exclusive outputs which are active HIGH (nY0 to nY3). When used as a decoder, nE when HIGH, forces nY0 to nY3 LOW. When used as a demultiplexer, the appropriate output is selected by the information on nA0 and nA1 with nE as data input. All unselected outputs are LOW.

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

Features and benefits

Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from -40 °C to +85 °C
Complies with JEDEC standard JESD 13-B

Applications

Code conversion
Address decoding
Demultiplexing: when using the enable input as data input

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
HEF4555BT	Production	3.0 - 15	CMOS	± 2.4	30	medium	-40~85	83	5.5	41.8	SO16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
HEF4555BT	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	HEF4555BT	HEF4555BT,653 ( 9333 733 10653 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
HEF4555BT	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack, CECC	Discontinued / End-of-life	HEF4555BT	HEF4555BT,652 ( 9333 733 10652 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
HEF4555BT	933373310652	2021-12-31	2022-06-30	HEF4555BT

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
HEF4555BT	HEF4555BT,653	HEF4555BT		week 6, 2004	65.0	1.2	8.33E8	1	1

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Orderable part number	Chemical content	RoHS / RHF	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
HEF4555BT	HEF4555BT,652	HEF4555BT		week 6, 2004	65.0	1.2	8.33E8	1	1

Quality and reliability disclaimer

Documentation (7)

File name	Title	Type	Date
HEF4555B	1-of-4 decoder/demultiplexer	Data sheet	2018-10-15
AN11051	Pin FMEA HEF4000 family	Application note	2019-01-09
Nexperia_Selection_guide_2022	Nexperia Selection Guide 2022	Selection guide	2022-01-05
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SOT109-1	plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body	Package information	2021-01-06
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

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Ordering, pricing & availability

HEF4555BT

Sample

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