74HC251D

8-input multiplexer; 3-state

The 74HC251; 74HCT251 is an 8-bit multiplexer with eight binary inputs (I0 to I7), three select inputs (S0 to S2) and an output enable input (OE). The select inputs select one of the eight binary inputs and route it to the complementary outputs (Y and Y). A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

Alternatives

74HC251D-Q100

Automotive qualified

8-input multiplexer; 3-state

Buy from Nexperia

SKU	Stock*	MOQ	Price per unit**	Quantity

Buy from distributors

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

* Stock values are subject to change
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia

Features and benefits

Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
Input levels:
- For 74HC251: CMOS level
- For 74HCT251: TTL level
Non-inverting data path
ESD protection:
- HBM JESD22-A114F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

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
74HC251D	Production	2.0 - 6.0	CMOS	± 5.2	18	low	-40~125	80	4.1	38	SO16

Package

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Package information	Reflow-/Wave soldering	Packing
74HC251D	74HC251D,653 ( 9337 135 20653 )	Active	74HC251D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC

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

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Package information	Reflow-/Wave soldering	Packing
74HC251D	74HC251D,652 ( 9337 135 20652 )	Withdrawn / End-of-life	74HC251D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack, CECC

Discontinuation information

Type number	Orderable part number	Ordering code	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74HC251D	74HC251D,652	933713520652	2021-12-31	2022-06-30	74HC251D	Version withdrawal

Environmental information

Type number	Orderable part number	Chemical content	RoHS	RHF-indicator
74HC251D	74HC251D,653	74HC251D

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-indicator
74HC251D	74HC251D,652	74HC251D

Quality and reliability disclaimer

Series

74HC251; 74HCT251 - 8-input multiplexer; 3-state

Documentation (7)

File name	Title	Type	Date
74HC_HCT251	8-input multiplexer; 3-state	Data sheet	2021-02-08
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
74HC251D_Nexperia_Product_Reliability	74HC251D Nexperia Product Reliability	Quality document	2022-05-04
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Ordering, pricing & availability

Type number	Orderable part number	Ordering code (12NC)	Packing	Packing quantity	Buy online
74HC251D	74HC251D,653	933713520653	Reel 13" Q1/T1 CECC	-	Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.