74HC273; 74HCT273

Octal D-type flip-flop with reset; positive-edge trigger

The 74HC273; 74HCT273 is an octal positive-edge triggered D-type flip-flop. The device features clock (CP) and master reset (MR) inputs. The outputs Qn will assume the state of their corresponding Dn inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CP) transition. A LOW on MR forces the outputs LOW independently of clock and data inputs. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

Features and benefits

Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
Input levels:
- For 74HC273: CMOS level
- For 74HCT273: TTL level
Common clock and master reset
Eight positive edge-triggered D-type flip-flops
ESD protection:
- HBM JESD22-A114F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	f_max (MHz)	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
74HC273BQ	Production	2.0 - 6.0	CMOS	± 5.2	15	122	low	-40~125	78	9.4	50	DHVQFN20
74HC273D	Production	2.0 - 6.0	CMOS	± 5.2	15	122	low	-40~125	85	27.5	61	SO20
74HC273PW	Production	2.0 - 6.0	CMOS	± 5.2	15	122	low	-40~125	100	4.6	44.9	TSSOP20
74HCT273BQ	Production	4.5 - 5.5	TTL	± 4	15	36	low	-40~125	78	9.4	50	DHVQFN20
74HCT273D	Production	4.5 - 5.5	TTL	± 4	15	36	low	-40~125	85	27.5	61	SO20
74HCT273PW	Production	4.5 - 5.5	TTL	± 4	15	36	low	-40~125	100	4.6	44.9	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC273BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	HC273BQ	74HC273BQ,115 ( 9352 745 87115 )
74HC273D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_653	Active	74HC273D	74HC273D,653 ( 9337 154 40653 )
74HC273PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	HC273	74HC273PW,118 ( 9351 858 30118 )
74HCT273BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	HCT273BQ	74HCT273BQ,115 ( 9352 745 88115 )
74HCT273D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_653	Active	74HCT273D	74HCT273D,653 ( 9337 155 50653 )
74HCT273PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	HCT273	74HCT273PW,118 ( 9351 858 20118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC273D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_652	Withdrawn / End-of-life	74HC273D	74HC273D,652 ( 9337 154 40652 )
74HC273PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	HC273	74HC273PW,112 ( 9351 858 30112 )
74HCT273D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_652	Withdrawn / End-of-life	74HCT273D	74HCT273D,652 ( 9337 155 50652 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74HC273D	933715440652	2021-12-31	2022-06-30	74HC273D
74HC273PW	935185830112	2021-12-31	2022-06-30	74HC273PW
74HCT273D	933715550652	2021-12-31	2022-06-30	74HCT273D
74HCT273PW	935185820112	2021-12-31	2022-06-30	74HCT273PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74HC273BQ	74HC273BQ,115	74HC273BQ	Always Pb-free
74HC273D	74HC273D,653	74HC273D	week 30, 2004
74HC273PW	74HC273PW,118	74HC273PW	week 7, 2005
74HCT273BQ	74HCT273BQ,115	74HCT273BQ	Always Pb-free
74HCT273D	74HCT273D,653	74HCT273D	week 30, 2004
74HCT273PW	74HCT273PW,118	74HCT273PW	week 7, 2005

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Orderable part number	Chemical content	Leadfree conversion date
74HC273D	74HC273D,652	74HC273D	week 30, 2004
74HC273PW	74HC273PW,112	74HC273PW	week 7, 2005
74HCT273D	74HCT273D,652	74HCT273D	week 30, 2004

Quality and reliability disclaimer

Documentation (9)

File name	Title	Type	Date
74HC_HCT273	Octal D-type flip-flop with reset; positive-edge trigger	Data sheet	2021-09-06
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
hc	HC/HCT Spice model	SPICE model	2022-02-17
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SOT764-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm body	Package information	2022-06-21
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT360-1	plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body	Package information	2022-06-21
SOT163-1	plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body	Package information	2022-06-20
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

Support

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Models

File name	Title	Type	Date
hc	HC/HCT Spice model	SPICE model	2022-02-17

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