74AHC74; 74AHCT74

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

The 74AHC74; 74AHCT74 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

The 74AHC74; 74AHCT74 is a dual positive-edge triggered, D-type flip-flop with individual data inputs (D), clock inputs (CP), set inputs (SD) and reset inputs (RD). It also has complementary outputs (Q and Q).

The set and reset are asynchronous active LOW inputs that operate independent of the clock input. Information on the data input is transferred to the Q output on the LOW to HIGH transition of the clock pulse. The data inputs must be stable one set-up time prior to the LOW to HIGH clock transition for predictable operation.

Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.

特性

Balanced propagation delays
All inputs have Schmitt-trigger actions
Inputs accept voltages higher than V_CC
Input levels:
- For 74AHC74: CMOS level
- For 74AHCT74: TTL level
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
74AHC74BQ	Production	2.0 - 5.5	CMOS	± 8	3.7	170	low	-40~125	106	20.9	74	DHVQFN14
74AHC74D	Production	2.0 - 5.5	CMOS	± 8	3.7	170	low	-40~125	108	20.1	66	SO14
74AHC74PW	Production	2.0 - 5.5	CMOS	± 8	3.7	170	low	-40~125	141	7.8	68	TSSOP14
74AHCT74BQ	Production	4.5 - 5.5	TTL	± 8	3.3	160	low	-40~125	106	20.9	74	DHVQFN14
74AHCT74D	Production	4.5 - 5.5	TTL	± 8	3.3	160	low	-40~125	108	20.1	66	SO14
74AHCT74PW	Production	4.5 - 5.5	TTL	± 8	3.3	160	low	-40~125	141	7.8	68	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)）
74AHC74BQ	DHVQFN14 (SOT762-1)	SOT762-1		SOT762-1_115	Active	AHC74	74AHC74BQ,115 ( 9352 788 07115 )
74AHC74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_118	Active	74AHC74D	74AHC74D,118 ( 9352 630 78118 )
74AHC74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_118	Active	AHC74	74AHC74PW,118 ( 9352 630 79118 )
74AHCT74BQ	DHVQFN14 (SOT762-1)	SOT762-1		SOT762-1_115	Active	AHT74	74AHCT74BQ,115 ( 9352 788 09115 )
74AHCT74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_118	Active	74AHCT74D	74AHCT74D,118 ( 9352 630 76118 )
74AHCT74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_118	Active	AHCT74	74AHCT74PW,118 ( 9352 630 77118 )

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)）
74AHCT74D	SO14 (SOT108-1)	SOT108-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT108-1_112	Withdrawn / End-of-life	74AHCT74D	74AHCT74D,112 ( 9352 630 76112 )
74AHCT74PW	TSSOP14 (SOT402-1)	SOT402-1	SSOP-TSSOP-VSO-WAVE	SOT402-1_112	Withdrawn / End-of-life	AHCT74	74AHCT74PW,112 ( 9352 630 77112 )

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
74AHC74D	935263078112	2021-12-31	2022-06-30	74AHC74D
74AHC74PW	935263079112	2021-12-31	2022-06-30	74AHC74PW
74AHCT74D	935263076112	2021-12-31	2022-06-30	74AHCT74D
74AHCT74PW	935263077112	2021-12-31	2022-06-30	74AHCT74PW

环境信息

型号	可订购的器件编号	化学成分	无铅转换日期
74AHC74BQ	74AHC74BQ,115	74AHC74BQ	Always Pb-free
74AHC74D	74AHC74D,118	74AHC74D	week 32, 2004
74AHC74PW	74AHC74PW,118	74AHC74PW	week 10, 2005
74AHCT74BQ	74AHCT74BQ,115	74AHCT74BQ	Always Pb-free
74AHCT74D	74AHCT74D,118	74AHCT74D	week 32, 2004
74AHCT74PW	74AHCT74PW,118	74AHCT74PW	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	RoHS	RHF指示符	无铅转换日期
74AHCT74D	74AHCT74D,112	74AHCT74D			week 32, 2004
74AHCT74PW	74AHCT74PW,112	74AHCT74PW			week 10, 2005

品质及可靠性免责声明

文档 (10)

文件名称	标题	类型	日期
74AHC_AHCT74	Dual D-type flip-flop with set and reset; positive-edge trigger	Data sheet	2024-03-07
ahc74	ahc74 IBIS model	IBIS model	2013-04-07
ahct74	ahct74 IBIS model	IBIS model	2013-04-07
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

支持

如果您需要设计/技术支持，请告知我们并填写应答表, 我们会尽快回复您。

模型

文件名称	标题	类型	日期
ahc74	ahc74 IBIS model	IBIS model	2013-04-07
ahct74	ahct74 IBIS model	IBIS model	2013-04-07

订购、定价与供货

样品

安世半导体客户可通过我们的销售机构或直接通过在线样品商店订购样品： https://extranet.nexperia.com.

样品订单通常需要2-4天寄送时间。

如果您尚未取得安世半导体的直接采购帐号，我们的全球与区域经销网络可以协助您取得样品。