HEF4049B

Hex inverting buffers

The HEF4049B provides six inverting buffers with high current output capability suitable for driving TTL or high capacitive loads. Since input voltages in excess of the buffers supply voltage are permitted, the buffers may also be used to convert logic levels of up to 15 V to standard TTL levels.

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

Accepts input voltages in excess of the supply voltage
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

LOCMOS (Local Oxidation CMOS) to DTL/TTL converter
HIGH sink current for driving two TTL loads
HIGH-to-LOW level logic conversion

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	f_max (MHz)	No of bits	Power dissipation considerations	R_th(j-a) (K/W)	R_th(j-c) (K/W)	Package name
HEF4049BT	Production	3.0 - 15	CMOS	-3 / +20	10	6	medium	84	43.1	SO16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
HEF4049BT	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	HEF4049BT	HEF4049BT,653 ( 9333 729 20653 )
HEF4049BT	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack, CECC	Active	HEF4049BT	HEF4049BT,652 ( 9333 729 20652 )

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
HEF4049BT	HEF4049BT,653	HEF4049BT		week 12, 2005	75.3	2.99	3.34E8	1	1
HEF4049BT	HEF4049BT,652	HEF4049BT		week 12, 2005	75.3	2.99	3.34E8	1	1

Quality and reliability disclaimer

Documentation (7)

File name	Title	Type	Date
HEF4049B	Hex inverting buffers	Data sheet	2017-03-17
AN11051	Pin FMEA HEF4000 family	Application note	2019-01-09
Nexperia_Selection_guide_2020	Nexperia Selection Guide 2020	Selection guide	2020-01-31
Nexperia_Selection_guide_2021	Nexperia Selection Guide 2021	Selection guide	2021-01-08
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
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08

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Ordering, pricing & availability

HEF4049BT

Sample

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