Datasheet Texas Instruments SN74LS642

Manufacturer	Texas Instruments
Series	SN74LS642

Octal bus transceivers with open collector outputs

Datasheets

PDF, 1.5 Mb, Revision: A, File published: Apr 1, 1979

Extract from the document

	SN74LS642-1DW	SN74LS642-1N	SN74LS642DW	SN74LS642DWG4	SN74LS642N	SN74LS642NE4	SN74LS642NSR
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)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	No	No	No	No	No	No	No

	SN74LS642-1DW	SN74LS642-1N	SN74LS642DW	SN74LS642DWG4	SN74LS642N	SN74LS642NE4	SN74LS642NSR
N	1	2	3	4	5	6	7
Pin	20	20	20	20	20	20	20
Package Type	DW	N	DW	DW	N	N	NS
Industry STD Term	SOIC	PDIP	SOIC	SOIC	PDIP	PDIP	SOP
JEDEC Code	R-PDSO-G	R-PDIP-T	R-PDSO-G	R-PDSO-G	R-PDIP-T	R-PDIP-T	R-PDSO-G
Package QTY	25	20	25	25	20	20	2000
Carrier	TUBE	TUBE	TUBE	TUBE	TUBE	TUBE	LARGE T&R
Device Marking	LS642-1	SN74LS642-1N	LS642	LS642	SN74LS642N	SN74LS642N	74LS642
Width (mm)	7.5	6.35	7.5	7.5	6.35	6.35	5.3
Length (mm)	12.8	24.33	12.8	12.8	24.33	24.33	12.6
Thickness (mm)	2.35	4.57	2.35	2.35	4.57	4.57	1.95
Pitch (mm)	1.27	2.54	1.27	1.27	2.54	2.54	1.27
Max Height (mm)	2.65	5.08	2.65	2.65	5.08	5.08	2
Mechanical Data	Download	Download	Download	Download	Download	Download	Download

Parameters / Models	SN74LS642-1DW	SN74LS642-1N	SN74LS642DW	SN74LS642DWG4	SN74LS642N	SN74LS642NE4	SN74LS642NSR
Bits	8	8	8	8	8	8	8
F @ Nom Voltage(Max), Mhz	35	35	35	35	35	35	35
ICC @ Nom Voltage(Max), mA	0.09	0.09	0.09	0.09	0.09	0.09	0.09
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
Output Drive (IOL/IOH)(Max), mA	- /48	- /48	- /24	- /24	- /24	- /24	- /24
Package Group	SOIC	PDIP	SOIC	SOIC	PDIP	PDIP	SO
Package Size: mm2:W x L, PKG	20SOIC: 132 mm2: 10.3 x 12.8(SOIC)	See datasheet (PDIP)	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)
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Schmitt Trigger	No	No	No	No	No	No	No
Technology Family	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(Min), V	4.75	4.75	4.75	4.75	4.75	4.75	4.75
Voltage(Nom), V	5	5	5	5	5	5	5
tpd @ Nom Voltage(Max), ns	25	25	25	25	25	25	25

	SN74LS642-1DW	SN74LS642-1N	SN74LS642DW	SN74LS642DWG4	SN74LS642N	SN74LS642NE4	SN74LS642NSR
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
Pb Free	Yes	Yes	Yes

Download
Designing with the SN54/74LS123 (Rev. A)
PDF, 118 Kb, Revision: A, File published: 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

Series: SN74LS642 (7)