74HC74; 74HCT74

Dual D-type flip-flop with set and reset; positive edge-trigger

The 74HC74 and 74HCT74 are dual positive edge triggered D-type flip-flop. They have individual data (nD), clock (nCP), set (nSD) and reset (nRD) inputs, and complementary nQ and nQ outputs. Data at the nD-input, that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition, is stored in the flip-flop and appears at the nQ output. Schmitt-trigger action in the clock input, makes the circuit highly tolerant to slower clock rise and fall times. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

特性

Wide supply voltage range from 2.0 to 6.0 V
CMOS low power dissipation
High noise immunity
Input levels:
- For 74HC74: CMOS level
- For 74HCT74: TTL level
Symmetrical output impedance
High noise immunity
Balanced propagation delays
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)
ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

参数类型

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
74HC74BQ	Production	2.0 - 6.0	CMOS	± 5.2	14	82	low	-40~125	106	20.9	74	DHVQFN14
74HC74D	Production	2.0 - 6.0	CMOS	± 5.2	14	82	low	-40~125	108	20.1	66	SO14
74HC74PW	Production	2.0 - 6.0	CMOS	± 5.2	14	82	low	-40~125	141	7.8	67	TSSOP14
74HCT74BQ	Production	4.5 - 5.5	TTL	± 4	15	59	low	-40~125	106	20.9	74	DHVQFN14
74HCT74D	Production	4.5 - 5.5	TTL	± 4	15	59	low	-40~125	108	20.1	66	SO14
74HCT74PW	Production	4.5 - 5.5	TTL	± 4	15	59	low	-40~125	141	7.8	67	TSSOP14

封装

型号	封装	尺寸版本	回流焊/波峰焊	包装	状态	标示	可订购的器件编号，（订购码(12NC)）
74HC74BQ	DHVQFN14 (SOT762-1)	SOT762-1		SOT762-1_115	Active	HC74	74HC74BQ,115 ( 9352 736 72115 )
74HC74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_653	Active	74HC74D	74HC74D,653 ( 9337 133 80653 )
74HC74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_118	Active	HC74	74HC74PW,118 ( 9351 751 30118 )
74HCT74BQ	DHVQFN14 (SOT762-1)	SOT762-1		SOT762-1_115	Active	HCT74	74HCT74BQ,115 ( 9352 736 15115 )
74HCT74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_653	Active	74HCT74D	74HCT74D,653 ( 9337 133 90653 )
74HCT74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_118	Active	HCT74	74HCT74PW,118 ( 9351 751 50118 )

下表中的版本已停产。参见表停产信息了解更多信息。

型号	封装	尺寸版本	回流焊/波峰焊	包装	状态	标示	可订购的器件编号，（订购码(12NC)）
74HC74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_652	Withdrawn / End-of-life	74HC74D	74HC74D,652 ( 9337 133 80652 )
74HCT74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_652	Withdrawn / End-of-life	74HCT74D	74HCT74D,652 ( 9337 133 90652 )
74HCT74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_112	Withdrawn / End-of-life	HCT74	74HCT74PW,112 ( 9351 751 50112 )

停产信息

型号	可订购的器件编号，（订购码(12NC)）	最后一次购买日期	最后一次交货日期	替代产品
74HC74D	933713380652	2021-12-31	2022-06-30	74HC74D
74HC74PW	935175130112	2021-12-31	2022-06-30	74HC74PW
74HCT74D	933713390652	2021-12-31	2022-06-30	74HCT74D
74HCT74PW	935175150112	2021-12-31	2022-06-30	74HCT74PW

环境信息

型号	可订购的器件编号	化学成分	无铅转换日期
74HC74BQ	74HC74BQ,115	74HC74BQ	Always Pb-free
74HC74D	74HC74D,653	74HC74D	week 13, 2005
74HC74PW	74HC74PW,118	74HC74PW	week 10, 2005
74HCT74BQ	74HCT74BQ,115	74HCT74BQ	Always Pb-free
74HCT74D	74HCT74D,653	74HCT74D	week 30, 2004
74HCT74PW	74HCT74PW,118	74HCT74PW	week 10, 2005

下表中的版本已停产。参见表停产信息了解更多信息。

型号	可订购的器件编号	化学成分	无铅转换日期
74HC74D	74HC74D,652	74HC74D	week 13, 2005
74HCT74D	74HCT74D,652	74HCT74D	week 30, 2004
74HCT74PW	74HCT74PW,112	74HCT74PW	week 10, 2005

品质及可靠性免责声明

文档 (13)

文件名称	标题	类型	日期
74HC_HCT74	Dual D-type flip-flop with set and reset; positive edge-trigger	Data sheet	2024-04-02
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
hc74	74HC74 IBIS model	IBIS model	2022-10-21
hct74	74HCT74 IBIS model	IBIS model	2022-10-21
hc	HC/HCT Spice model	SPICE model	2022-02-17
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
SOT762-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 14 terminals; 0.5 mm pitch; 2.5 x 3 x 1 mm body	Package information	2023-04-05
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT402-1	plastic, thin shrink small outline package; 14 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.2 mm body	Package information	2023-11-07
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08
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	2023-11-07

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模型

文件名称	标题	类型	日期
hc74	74HC74 IBIS model	IBIS model	2022-10-21
hct74	74HCT74 IBIS model	IBIS model	2022-10-21
hc	HC/HCT Spice model	SPICE model	2022-02-17

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