Datasheet Texas Instruments SN74LS251 — Ficha de datos

Fabricante	Texas Instruments
Serie	SN74LS251

Selectores / multiplexores de datos de 8 líneas a 1 línea con salidas de 3 estados

Hojas de datos

PDF, 1.2 Mb, Archivo publicado: marzo 1, 1988

Extracto del documento

	SN74LS251D	SN74LS251DR	SN74LS251N	SN74LS251N3	SN74LS251NE4	SN74LS251NSR
Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)	Obsoleto (El fabricante ha interrumpido la producción del dispositivo)	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No	No	No	No	No	No

	SN74LS251D	SN74LS251DR	SN74LS251N	SN74LS251N3	SN74LS251NE4	SN74LS251NSR
N	1	2	3	4	5	6
Pin	16	16	16	16	16	16
Package Type	D	D	N	N	N	NS
Industry STD Term	SOIC	SOIC	PDIP	PDIP	PDIP	SOP
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDIP-T	R-PDIP-T	R-PDIP-T	R-PDSO-G
Package QTY	40	2500	25		25	2000
Carrier	TUBE	LARGE T&R	TUBE		TUBE	LARGE T&R
Device Marking	LS251	LS251	SN74LS251N		SN74LS251N	74LS251
Width (mm)	3.91	3.91	6.35	6.35	6.35	5.3
Length (mm)	9.9	9.9	19.3	19.3	19.3	10.3
Thickness (mm)	1.58	1.58	3.9	3.9	3.9	1.95
Pitch (mm)	1.27	1.27	2.54	2.54	2.54	1.27
Max Height (mm)	1.75	1.75	5.08	5.08	5.08	2
Mechanical Data	Descargar	Descargar	Descargar	Descargar	Descargar	Descargar

Parameters / Models	SN74LS251D	SN74LS251DR	SN74LS251N	SN74LS251N3	SN74LS251NE4	SN74LS251NSR
Approx. Price (US$)				0.28 \| 1ku
Bandwidth, MHz	35	35	35		35	35
Bits	8	8	8		8	8
Bits(#)				8
Number of Channels	1	1	1		1	1
Channels(#)				1
Configuration	8:1	8:1	8:1	8:1	8:1	8:1
Digital input leakage(Max), uA	5	5	5		5	5
ESD Charged Device Model, kV	0.75	0.75	0.75		0.75	0.75
ESD HBM, kV	2	2	2		2	2
F @ Nom Voltage(Max), Mhz	35	35	35		35	35
F @ Nom Voltage(Max)(Mhz)				35
Function	Encoder/Multiplexer	Encoder/Multiplexer	Encoder/Multiplexer	Encoder/Multiplexer	Encoder/Multiplexer	Encoder/Multiplexer
ICC @ Nom Voltage(Max), mA	12	12	12		12	12
ICC @ Nom Voltage(Max)(mA)				12
Input Type				TTL
Operating Temperature Range, C	0 to 70	0 to 70	0 to 70		0 to 70	0 to 70
Operating Temperature Range(C)				0 to 70
Output Drive (IOL/IOH)(Max), mA	8/-2.6	8/-2.6	8/-2.6		8/-2.6	8/-2.6
Output Drive (IOL/IOH)(Max)(mA)				8/-2.6
Output Type				TTL
Package Group	SOIC	SOIC	PDIP	PDIP	PDIP	SO
Package Size: mm2:W x L, PKG	16SOIC: 59 mm2: 6 x 9.9(SOIC)	16SOIC: 59 mm2: 6 x 9.9(SOIC)	See datasheet (PDIP)		See datasheet (PDIP)	16SO: 80 mm2: 7.8 x 10.2(SO)
Package Size: mm2:W x L (PKG)				See datasheet (PDIP)
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Schmitt Trigger	No	No	No	No	No	No
Technology Family	LS	LS	LS	LS	LS	LS
Type	3-State Output	3-State Output	3-State Output	3-State Output	3-State Output	3-State Output
VCC(Max), V	5.25	5.25	5.25		5.25	5.25
VCC(Max)(V)				5.25
VCC(Min), V	4.75	4.75	4.75		4.75	4.75
VCC(Min)(V)				4.75
Voltage(Nom), V	5	5	5		5	5
Voltage(Nom)(V)				5
tpd @ Nom Voltage(Max), ns	45	45	45		45	45
tpd @ Nom Voltage(Max)(ns)				45

	SN74LS251D	SN74LS251DR	SN74LS251N	SN74LS251N3	SN74LS251NE4	SN74LS251NSR
RoHS	Obediente	Obediente	Obediente	Desobediente	Obediente	Obediente
Pb gratis	Sí	No	Sí

Descargar
Designing with the SN54/74LS123 (Rev. A)
PDF, 118 Kb, Revisión: A, Archivo publicado: marzo 1, 1997
The Texas Instruments (TI) SN54/74LS123 dual retriggerable monostable multivibrator is a one-shot device capable of verylong output pulses and up to 100% duty cycle. The ?LS123 also features dc triggering from gated low-level active A andhigh-level active B inputs and provides a clear input that terminates the output pulse of any predetermined time independentof timing components R ext and

Serie: SN74LS251 (6)