74F253

General description

The 74F253 has two identical 4-input multiplexers with 3-State outputs which select two bits from four sources selected by common Select inputs (S0, S1). When the individual Output Enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a high impedance (Hi-Z) state.

The 74F253 is the logic implementation of a 2-pole, 4-position switch; the position of the switch being determined by the logic levels supplied to the two common Select inputs.

To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the high-impedance state. Therefore, only one Output Enable must be active at a time.

Features

• 3-State outputs for bus interface and multiplex expansion
• Common select inputs
• Separate Output Enable Inputs

Products/packages

Type number	North American Type number	Ordering code (12NC)	Product status	Package	Packing	Marking	Chemical content	Leadfree conversion date
N74F253D	N74F253D	9337 567 30602	Volume production	SOT109-1 (SO16)	Tube (Signetics)	Standard Marking	N74F253D	week 6, 2004
N74F253D	N74F253D-T	9337 567 30623	Volume production	SOT109-1 (SO16)	Reel Pack, SMD, 13" (Signetics)	Standard Marking	N74F253D	week 6, 2004
N74F253N	N74F253N	9337 567 20602	Volume production	SOT38-4 (DIP16)	Tube (Signetics)	Standard Marking	N74F253N	Always Pb-free

Pricing/ordering/availability

Type number	Ordering code(12NC)	Indicative price/unit($)	Region	Distributor	In stock	Inventory date	Buy online	Samples
N74F253D	9337 567  30602	0.2800						not available
N74F253D	9337 567  30623	0.2800						Order samples
N74F253N	9337 567  20602	0.3400						Order samples

Block diagrams/pinning

Technical documents

Application Notes

Parametrics/similar products

Type number	Package	Description	Propagation Delay(ns)	Voltage	No. of Pins	Logic Switching Levels	Output Drive Capability
N74F253D	SOT109-1 (SO16)	Dual 4-Input Multiplexer (3-State)	5	4.5-5.5 V	16	TTL	-3/+24 mA
N74F253N	SOT38-4 (DIP16)	Dual 4-Input Multiplexer (3-State)	5	4.5-5.5 V	16	TTL	-3/+24 mA

Similar products

74F253 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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