The 74HC/HCT74 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT74 are dual positive-edge triggered, D-type flip-flops with individual data (D) inputs, clock (CP) inputs, set (SD) and reset (RD) inputs; also complementary Q and Q outputs.
The set and reset are asynchronous active LOW inputs and operate independently 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 D 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.
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74HC74BQ | 74HC74BQ-G | 9352 736 72115 | Volume production | SOT762-1
(DHVQFN14) | Reel Pack, SMD, 7" | Standard Marking | 74HC74BQ
| Always Pb-free |
| 74HC74D | 74HC74D | 9337 133 80652 | Volume production | SOT108-1
(SO14) | Bulk Pack, CECC | Standard Marking | 74HC74D
| week 13, 2005 |
| 74HC74D | 74HC74D-T | 9337 133 80653 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13", CECC | Standard Marking | 74HC74D
| week 13, 2005 |
| 74HC74DB | 74HC74DB | 9351 751 70112 | Volume production | SOT337-1
(SSOP14) | Tube | Standard Marking | 74HC74DB
| week 12, 2005 |
| 74HC74DB | 74HC74DB-T | 9351 751 70118 | Volume production | SOT337-1
(SSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HC74DB
| week 12, 2005 |
| 74HC74N | 74HC74N | 9336 691 30652 | Volume production | SOT27-1
(DIP14) | Bulk Pack, CECC | Standard Marking | 74HC74N
| Always Pb-free |
| 74HC74PW | 74HC74PW | 9351 751 30112 | Volume production | SOT402-1
(TSSOP14) | Tube | Standard Marking | 74HC74PW
| week 10, 2005 |
| 74HC74PW | 74HC74PW-T | 9351 751 30118 | Volume production | SOT402-1
(TSSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HC74PW
| week 10, 2005 |
| 74HCT74BQ | 74HCT74BQ-G | 9352 736 15115 | Volume production | SOT762-1
(DHVQFN14) | Reel Pack, SMD, 7" | Standard Marking | 74HCT74BQ
| Always Pb-free |
| 74HCT74D | 74HCT74D | 9337 133 90652 | Volume production | SOT108-1
(SO14) | Bulk Pack, CECC | Standard Marking | 74HCT74D
| week 30, 2004 |
| 74HCT74D | 74HCT74D-T | 9337 133 90653 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13", CECC | Standard Marking | 74HCT74D
| week 30, 2004 |
| 74HCT74DB | 74HCT74DB | 9351 751 80112 | Volume production | SOT337-1
(SSOP14) | Tube | Standard Marking | 74HCT74DB
| week 12, 2005 |
| 74HCT74DB | 74HCT74DB-T | 9351 751 80118 | Volume production | SOT337-1
(SSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HCT74DB
| week 12, 2005 |
| 74HCT74N | 74HCT74N | 9336 692 50652 | Volume production | SOT27-1
(DIP14) | Bulk Pack, CECC | Standard Marking | 74HCT74N
| Always Pb-free |
| 74HCT74PW | 74HCT74PW | 9351 751 50112 | Volume production | SOT402-1
(TSSOP14) | Tube | Standard Marking | 74HCT74PW
| week 10, 2005 |
| 74HCT74PW | 74HCT74PW-T | 9351 751 50118 | Volume production | SOT402-1
(TSSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HCT74PW
| week 10, 2005 |
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74HC74BQ | 9352 736 72115 | 0.2500 | NA | DIGI-KEY CORPORATION | 6,000 | 9/3/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 1,270 | 9/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 1,800 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 2,950 | 9/5/2008 | Buy online | ||||
| 74HC74D | 9337 133 80652 | 0.1500 | NA | ARROW ELECTRONICS | 21,100 | 9/4/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 364 | 9/5/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 1,520 | 9/3/2008 | Buy online | ||||
| EU | FARNELL | 3,222 | 9/4/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 5,813 | 9/4/2008 | Buy online | ||||
| 74HC74D | 9337 133 80653 | 0.1500 | ASIA | WPI | 15,000 | 09/05/2008 | Buy online | Order samples |
| NA | ARROW ELECTRONICS | 20,000 | 9/4/2008 | Buy online | ||||
| NA | AVNET ELECTRONICS MARKETING | 190,000 | 9/5/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 10,000 | 9/3/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 414 | 9/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 58,265 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,159 | 9/5/2008 | Buy online | ||||
| NA | NEWARK | 150 | 9/5/2008 | Buy online | ||||
| 74HC74DB | 9351 751 70112 | 0.1600 | not available | |||||
| 74HC74DB | 9351 751 70118 | 0.1600 | Order samples | |||||
| 74HC74N | 9336 691 30652 | 0.1800 | NA | ARROW ELECTRONICS | 2,546 | 9/4/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 5,003 | 9/5/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 185 | 9/3/2008 | Buy online | ||||
| EU | FARNELL | 2,061 | 9/4/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 6,720 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,971 | 9/5/2008 | Buy online | ||||
| ASIA | WPI | 250 | 09/05/2008 | Buy online | ||||
| 74HC74PW | 9351 751 30112 | 0.1500 | NA | ARROW ELECTRONICS | 1,938 | 9/4/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 6,665 | 9/5/2008 | Buy online | ||||
| 74HC74PW | 9351 751 30118 | 0.1500 | ASIA | WPI | 2,500 | 09/05/2008 | Buy online | Order samples |
| NA | ARROW ELECTRONICS | 5,000 | 9/4/2008 | Buy online | ||||
| NA | AVNET ELECTRONICS MARKETING | 27,500 | 9/5/2008 | Buy online | ||||
| 74HCT74BQ | 9352 736 15115 | 0.2500 | NA | DIGI-KEY CORPORATION | 6,000 | 9/3/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 1,644 | 9/3/2008 | Buy online | ||||
| 74HCT74D | 9337 133 90652 | 0.1500 | NA | ARROW ELECTRONICS | 5,128 | 9/4/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 2,994 | 9/5/2008 | Buy online | ||||
| EU | FARNELL | 457 | 9/4/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 6,826 | 9/4/2008 | Buy online | ||||
| NA | NEWARK | 457 | 9/5/2008 | Buy online | ||||
| 74HCT74D | 9337 133 90653 | 0.1500 | NA | ARROW ELECTRONICS | 10,000 | 9/4/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 20,000 | 9/5/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 5,000 | 9/3/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 1,607 | 9/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 7,500 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 2,063 | 9/5/2008 | Buy online | ||||
| 74HCT74DB | 9351 751 80112 | 0.1600 | not available | |||||
| 74HCT74DB | 9351 751 80118 | 0.1600 | Order samples | |||||
| 74HCT74N | 9336 692 50652 | 0.1800 | NA | ARROW ELECTRONICS | 1,995 | 9/4/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 5,350 | 9/5/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 1,338 | 9/3/2008 | Buy online | ||||
| EU | FARNELL | 801 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 2,756 | 9/5/2008 | Buy online | ||||
| NA | NEWARK | 801 | 9/5/2008 | Buy online | ||||
| ASIA | WPI | 250 | 09/05/2008 | Buy online | ||||
| 74HCT74PW | 9351 751 50112 | 0.1500 | not available | |||||
| 74HCT74PW | 9351 751 50118 | 0.1500 | NA | FUTURE ELECTRONICS | 13,500 | 9/4/2008 | Buy online | Order samples |
Application Notes
Support Documents
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|---|
| 74HC74BQ | SOT762-1
(DHVQFN14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger | 82 | 14@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC74D | SOT108-1
(SO14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger | 82 | 14@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC74DB | SOT337-1
(SSOP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger | 82 | 14@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC74N | SOT27-1
(DIP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger | 82 | 14@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC74PW | SOT402-1
(TSSOP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger | 82 | 14@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HCT74BQ | SOT762-1
(DHVQFN14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger; TTL Enabled | 59 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT74D | SOT108-1
(SO14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger; TTL Enabled | 59 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT74DB | SOT337-1
(SSOP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger; TTL Enabled | 59 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT74N | SOT27-1
(DIP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger; TTL Enabled | 59 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT74PW | SOT402-1
(TSSOP14) | Dual D-Type Flip-Flop with Set and Reset; Positive-Edge Trigger; TTL Enabled | 59 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
74HC74; 74HCT74 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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