74HC280; 74HCT280

9-bit odd/even parity generator/checker

The 74HC280; 74HCT280 is a 9-bit parity generator or checker. Both even and odd parity outputs are available. The even parity output (PE) is HIGH when an even number of data inputs (I0 to I8) is HIGH. The odd parity output (PO) is HIGH when an odd number of data inputs are HIGH. Expansion to larger word sizes is accomplished by tying the even outputs (PE) of up to nine parallel devices to the final stage data inputs. Inputs include clamp diodes. It enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC

Features and benefits

Complies with JEDEC standard no. 7A
Input levels:
- For 74HC280: CMOS level
- For 74HCT280: TTL level
Word-length easily expanded by cascading
Generates either odd or even parity for nine data bits
ESD protection:
- HBM JESD22-A114F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74HC280D	Production	2.0 - 6.0	CMOS	± 5.2	17	low	-40~125	73	1.0	30	SO14
74HCT280D	Production	4.5 - 5.5	TTL	± 4	18	low	-40~125	76	1.0	34	SO14

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC280D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	74HC280D	74HC280D,653 ( 9337 138 80653 )
74HC280D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack, CECC	Active	74HC280D	74HC280D,652 ( 9337 138 80652 )
74HCT280D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	74HCT280D	74HCT280D,653 ( 9337 138 90653 )
74HCT280D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	Bulk Pack, CECC	Active	74HCT280D	74HCT280D,652 ( 9337 138 90652 )

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74HC280D	74HC280D,653	74HC280D	week 5, 2004	84.9	6.62	1.51E8	1	1
74HC280D	74HC280D,652	74HC280D	week 5, 2004	84.9	6.62	1.51E8	1	1
74HCT280D	74HCT280D,653	74HCT280D	week 5, 2004	84.9	6.62	1.51E8	1	1
74HCT280D	74HCT280D,652	74HCT280D	week 5, 2004	84.9	6.62	1.51E8	1	1

Quality and reliability disclaimer

Documentation (6)

File name	Title	Type	Date
74HC_HCT280	9-bit odd, even parity generator, checker	Data sheet	2017-03-16
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SOT108-1	plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm body	Package information	2021-01-06

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