Datasheet Texas Instruments SN74LS540 — 数据表

制造商	Texas Instruments
系列	SN74LS540

具有三态输出的八路缓冲器和线路驱动器

数据表

PDF, 1.4 Mb, 档案已发布: Mar 1, 1988

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	SN74LS540DBR	SN74LS540DW	SN74LS540DWG4	SN74LS540DWR	SN74LS540N	SN74LS540N3	SN74LS540NE4	SN74LS540NSR
Lifecycle Status	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Obsolete (Manufacturer has discontinued the production of the device)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	No	No	No	No	No	No	No	No

	SN74LS540DBR	SN74LS540DW	SN74LS540DWG4	SN74LS540DWR	SN74LS540N	SN74LS540N3	SN74LS540NE4	SN74LS540NSR
N	1	2	3	4	5	6	7	8
Pin	20	20	20	20	20	20	20	20
Package Type	DB	DW	DW	DW	N	N	N	NS
Industry STD Term	SSOP	SOIC	SOIC	SOIC	PDIP	PDIP	PDIP	SOP
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDIP-T	R-PDIP-T	R-PDIP-T	R-PDSO-G
Package QTY	2000	25	25	2000	20		20	2000
Carrier	LARGE T&R	TUBE	TUBE	LARGE T&R	TUBE		TUBE	LARGE T&R
Device Marking	LS540	LS540	LS540	LS540	SN74LS540N		SN74LS540N	74LS540
Width (mm)	5.3	7.5	7.5	7.5	6.35	6.35	6.35	5.3
Length (mm)	7.2	12.8	12.8	12.8	24.33	24.33	24.33	12.6
Thickness (mm)	1.95	2.35	2.35	2.35	4.57	4.57	4.57	1.95
Pitch (mm)	.65	1.27	1.27	1.27	2.54	2.54	2.54	1.27
Max Height (mm)	2	2.65	2.65	2.65	5.08	5.08	5.08	2
Mechanical Data	下载	下载	下载	下载	下载	下载	下载	下载

Parameters / Models	SN74LS540DBR	SN74LS540DW	SN74LS540DWG4	SN74LS540DWR	SN74LS540N	SN74LS540N3	SN74LS540NE4	SN74LS540NSR
Approx. Price (US$)						0.51 \| 1ku
Bits	8	8	8	8	8		8	8
Bits(#)						8
F @ Nom Voltage(Max), Mhz	35	35	35	35	35		35	35
F @ Nom Voltage(Max)(Mhz)						35
ICC @ Nom Voltage(Max), mA	0.045	0.045	0.045	0.045	0.045		0.045	0.045
ICC @ Nom Voltage(Max)(mA)						0.045
Input Type						TTL
Operating Temperature Range, C	0 to 70	0 to 70	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	-15/24	-15/24	-15/24	-15/24	-15/24		-15/24	-15/24
Output Drive (IOL/IOH)(Max)(mA)						-15/24
Output Type						CMOS
Package Group	SSOP	SOIC	SOIC	SOIC	PDIP	PDIP	PDIP	SO
Package Size: mm2:W x L, PKG	20SSOP: 56 mm2: 7.8 x 7.2(SSOP)	20SOIC: 132 mm2: 10.3 x 12.8(SOIC)	20SOIC: 132 mm2: 10.3 x 12.8(SOIC)	20SOIC: 132 mm2: 10.3 x 12.8(SOIC)	See datasheet (PDIP)		See datasheet (PDIP)	20SO: 98 mm2: 7.8 x 12.6(SO)
Package Size: mm2:W x L (PKG)						See datasheet (PDIP)
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Schmitt Trigger	No	No	No	No	No	No	No	No
Technology Family	LS	LS	LS	LS	LS	LS	LS	LS
VCC(Max), V	5.25	5.25	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		4.75	4.75
VCC(Min)(V)						4.75
Voltage(Nom), V	5	5	5	5	5		5	5
Voltage(Nom)(V)						5
tpd @ Nom Voltage(Max), ns	15	15	15	15	15		15	15
tpd @ Nom Voltage(Max)(ns)						15

	SN74LS540DBR	SN74LS540DW	SN74LS540DWG4	SN74LS540DWR	SN74LS540N	SN74LS540N3	SN74LS540NE4	SN74LS540NSR
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Not Compliant	Compliant	Compliant
Pb Free	Yes	Yes	No

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Designing with the SN54/74LS123 (Rev. A)
PDF, 118 Kb, 修订版: A, 档案已发布: Mar 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

系列: SN74LS540 (8)