COMMERCIAL EXTENDED Multiplexer & Demultiplexer 91

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Part	Manufacturer	Logic IC Type	Temperature Grade	Terminal Form	No. of Terminals	Package Code	Package Shape	Package Body Material	Surface Mount	No. of Functions	Technology	No. of Inputs	Packing Method	Nominal Supply Voltage / Vsup (V)	Power Supplies (V)	Load Capacitance (CL)	Package Style (Meter)	Package Equivalence Code	Propagation Delay (tpd)	Maximum I (ol)	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Output Characteristics	Minimum Operating Temperature	Terminal Finish	Terminal Position	JESD-30 Code	Moisture Sensitivity Level (MSL)	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width	Qualification	Output Polarity	Minimum Supply Voltage (Vsup)	Maximum Power Supply Current (ICC)	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	No. of Outputs	Peak Reflow Temperature (C)	Length	Family
HD74LS157FP-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		14 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V				1		10.06 mm	LS
HD74LS153RPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4	TR	5	5	15 pF	SMALL OUTLINE	SOP14,.25	26 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	1.75 mm	3.95 mm	Not Qualified	TRUE	4.75 V	10 mA			1		9.9 mm	LS
HD74LS153P-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2	TTL	4		5			IN-LINE		26 ns			2.54 mm	75 Cel		-20 Cel		DUAL	R-PDIP-T16	1		5.06 mm	7.62 mm	Not Qualified	TRUE					1		19.2 mm	LS
HD74LS152FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5			SMALL OUTLINE		21 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G14		5.25 V	2.2 mm	5.5 mm	Not Qualified	INVERTED	4.75 V				1		10.06 mm	LS
HD74LS151P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	TTL	8		5	5		IN-LINE	DIP16,.3	32 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel		-20 Cel		DUAL	R-PDIP-T16	1	5.25 V	5.06 mm	7.62 mm	Not Qualified	COMPLEMENTARY	4.75 V	10 mA			1		19.2 mm	LS
HD74LS151FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5	5		SMALL OUTLINE	SOP16,.3	32 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel	TIN LEAD	DUAL	R-PDSO-G16	1		2.2 mm	5.5 mm	Not Qualified	COMPLEMENTARY		10 mA	e0	20	1	260	10.06 mm	LS
HD74LS153FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4	TR	5	5	15 pF	SMALL OUTLINE	SOP14,.3	26 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	10 mA		20	1	260	10.06 mm	LS
HD74LS253FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4		5			SMALL OUTLINE		25 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16			2.2 mm	5.5 mm	Not Qualified	TRUE					1		10.06 mm	LS
HD74LS157P-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	TTL	2		5	5	15 pF	IN-LINE	DIP16,.3	14 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel		-20 Cel		DUAL	R-PDIP-T16	1	5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V	16 mA			1		19.2 mm	LS
HD74LS251P-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	TTL	8		5			IN-LINE		28 ns			2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16		5.25 V	5.06 mm	7.62 mm	Not Qualified	COMPLEMENTARY	4.75 V				1		19.2 mm	LS
HD74LS153FP-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4		5			SMALL OUTLINE		26 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1		2.2 mm	5.5 mm	Not Qualified	TRUE					1		10.06 mm	LS
HD74LS257P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	TTL	2		5	5	15 pF	IN-LINE	DIP16,.3	18 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16	1	5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V	19 mA			1		19.2 mm	LS
HD74LS258FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		18 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16		5.25 V	2.2 mm	5.5 mm	Not Qualified	INVERTED	4.75 V				1		10.06 mm	LS
HD74LS298FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16			2.2 mm	5.5 mm	Not Qualified	TRUE					1		10.06 mm	LS
HD74LS253P-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2	TTL	4		5			IN-LINE		25 ns			2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16		5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V				1		19.2 mm	LS
HD74LS251FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8	TR	5	5	15 pF	SMALL OUTLINE	SOP16,.3	28 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16		5.25 V	2.2 mm	5.5 mm	Not Qualified	COMPLEMENTARY	4.75 V	12 mA			1		10.06 mm	LS
HD74LS157RP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		14 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16		5.25 V	1.75 mm	3.95 mm	Not Qualified	TRUE	4.75 V			NOT SPECIFIED	1	NOT SPECIFIED	9.9 mm	LS
HD74LS258RP-EL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		18 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16			1.75 mm	3.9 mm	Not Qualified	INVERTED					1		9.9 mm	LS
HD74LS157FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5	5		SMALL OUTLINE	SOP16,.3	14 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	16 mA		20	1	260	10.06 mm	LS
HD74LS257FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2	TR	5	5	15 pF	SMALL OUTLINE	SOP16,.3	18 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	19 mA		20	1	260	10.06 mm	LS
HD74LS151RPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8	TR	5	5		SMALL OUTLINE	SOP16,.25	32 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	1.75 mm	3.95 mm	Not Qualified	COMPLEMENTARY	4.75 V	10 mA			1		9.9 mm	LS
HD74LS151FP-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel	TIN BISMUTH	DUAL	R-PDSO-G16	1		2.2 mm	5.5 mm	Not Qualified	COMPLEMENTARY			e6		1		10.06 mm	LS
HD74LS251P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	1	TTL	8		5	5	15 pF	IN-LINE	DIP16,.3	28 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16		5.25 V	5.06 mm	7.62 mm	Not Qualified	COMPLEMENTARY	4.75 V	12 mA			1		19.2 mm	LS
HD74LS258FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		18 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16			2.2 mm	5.5 mm	Not Qualified	INVERTED					1		10.06 mm	LS
HD74LS153FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4		5			SMALL OUTLINE		26 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16			2.2 mm	5.5 mm	Not Qualified	TRUE				NOT SPECIFIED	1	NOT SPECIFIED	10.06 mm	LS
HD74LS257FP-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5	5	15 pF	SMALL OUTLINE	SOP16,.3	18 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	19 mA			1		10.06 mm	LS
HD74LS158FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5	5	15 pF	SMALL OUTLINE	SOP16,.3	12 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1		2.2 mm	5.5 mm	Not Qualified	INVERTED		8 mA	e0	20	1	260	10.06 mm	LS
HD74LS157P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	TTL	2		5	5	15 pF	IN-LINE	DIP16,.3	14 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel		-20 Cel		DUAL	R-PDIP-T16	1	5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V	16 mA			1		19.2 mm	LS
HD74LS257RP-EL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		18 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16		5.25 V	1.75 mm	3.9 mm	Not Qualified	TRUE	4.75 V				1		9.9 mm	LS
HD74LS152FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G14		5.25 V	2.2 mm	5.5 mm	Not Qualified	INVERTED	4.75 V				1		10.06 mm	LS
HD74LS253FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4	TR	5	5	15 pF	SMALL OUTLINE	SOP16,.3	25 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16		5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	14 mA			1		10.06 mm	LS
HD74LS152RP-EL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	14	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G14		5.25 V	1.75 mm	3.95 mm	Not Qualified	INVERTED	4.75 V				1		8.65 mm	LS
HD74LS298RP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel	TIN LEAD	DUAL	R-PDSO-G16			1.75 mm	3.95 mm	Not Qualified	TRUE			e0		1		9.9 mm	LS
HD74LS257P-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	TTL	2		5	5	15 pF	IN-LINE	DIP16,.3	18 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16	1	5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V	19 mA			1		19.2 mm	LS
HD74LS157FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2	TR	5	5	15 pF	SMALL OUTLINE	SOP16,.3	14 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V	16 mA		20	1	260	10.06 mm	LS
HD74LS157RPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2	TR	5	5	15 pF	SMALL OUTLINE	SOP16,.25	14 ns	8 Amp	Multiplexer/Demultiplexers	1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	1.75 mm	3.95 mm	Not Qualified	TRUE	4.75 V	16 mA		20	1	260	9.9 mm	LS
HD74LS257FP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		18 ns			1.27 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDSO-G16	1	5.25 V	2.2 mm	5.5 mm	Not Qualified	TRUE	4.75 V				1		10.06 mm	LS
HD74LS253P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	2	TTL	4		5	5	15 pF	IN-LINE	DIP16,.3	25 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel	3-STATE	-20 Cel		DUAL	R-PDIP-T16		5.25 V	5.06 mm	7.62 mm	Not Qualified	TRUE	4.75 V	14 mA			1		19.2 mm	LS
HD74LS153RP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	2	TTL	4		5			SMALL OUTLINE		26 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16			1.75 mm	3.95 mm	Not Qualified	TRUE				NOT SPECIFIED	1	NOT SPECIFIED	9.9 mm	LS
HD74LS151RP	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	1	TTL	8		5			SMALL OUTLINE		32 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16			1.75 mm	3.9 mm	Not Qualified	COMPLEMENTARY				NOT SPECIFIED	1	NOT SPECIFIED	9.9 mm	LS
HD74LS158FP-E	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		12 ns			1.27 mm	75 Cel		-20 Cel	TIN BISMUTH	DUAL	R-PDSO-G16	1		2.2 mm	5.5 mm	Not Qualified	INVERTED			e6		1		10.06 mm	LS
HD74LS158FPEL	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	GULL WING	16	SOP	RECTANGULAR	PLASTIC/EPOXY	YES	4	TTL	2		5			SMALL OUTLINE		12 ns			1.27 mm	75 Cel		-20 Cel		DUAL	R-PDSO-G16		5.25 V	2.2 mm	5.5 mm	Not Qualified	INVERTED	4.75 V				1		10.06 mm	LS
HD74LS298P	Renesas Electronics	MULTIPLEXER	COMMERCIAL EXTENDED	THROUGH-HOLE	16	DIP	RECTANGULAR	PLASTIC/EPOXY	NO	4	TTL	2		5	5	15 pF	IN-LINE	DIP16,.3	32 ns	8 Amp	Multiplexer/Demultiplexers	2.54 mm	75 Cel		-20 Cel	TIN LEAD	DUAL	R-PDIP-T16			5.06 mm	7.62 mm	Not Qualified	TRUE		21 mA	e0		1		19.2 mm	LS

Multiplexer & Demultiplexer

Multiplexers and demultiplexers are electronic circuits that are used to transmit and receive multiple signals over a single channel. They are essential components of digital systems and are used to reduce the number of transmission lines required to transmit multiple signals.

A multiplexer, also known as a mux, is a digital circuit that can select one of several input signals and transmit it to a single output line based on a control signal. A multiplexer can have two or more inputs and a single output, and the selection of the input is determined by the binary value of the control signal. Multiplexers are used to reduce the number of transmission lines required to transmit multiple signals over a long distance.

A demultiplexer, also known as a demux, is a digital circuit that can distribute a single input signal to one of several output lines based on a control signal. A demultiplexer can have a single input and two or more outputs, and the selection of the output is determined by the binary value of the control signal. Demultiplexers are used to receive multiple signals transmitted over a single line.

Multiplexers and demultiplexers are commonly used together in digital systems to transmit and receive multiple signals over a single channel. They are used in various applications, including digital signal processing, telecommunications, and data storage systems. Multiplexers and demultiplexers are also used in memory systems to store and retrieve data from memory cells.

Multiplexers and demultiplexers can be designed using various technologies, including transistor-transistor logic (TTL), complementary metal-oxide-semiconductor (CMOS), and field-programmable gate arrays (FPGAs). They can also be cascaded together to increase the number of inputs or outputs.