Texas Instruments SN74AC74N

Mfr. Part

SN74AC74N

Manufacturer

Luminary Micro Texas Instruments

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Detailed Description

Dual D-type positive-edge-triggered flip-flop with asynchronous preset and clear. High-speed AC CMOS logic family. Through-hole 14-PDIP package. Wide 2 V to 6 V supply. Complementary Q and Q outputs. Rated for -40°C to 85°C ambient. RoHS3 compliant. Series 74AC. Base product number 74AC74. Main category Integrated Circuits, small classification Logic Flip Flops. Standard tube packaging. Quantity listed 3072 units available at time of listing subject to change.

Key Features

Dual 1-bit D flip-flops in one IC two elements each 1 bit

Positive-edge-triggered clock

Asynchronous preset and clear set reset

Complementary outputs Q and Q

Wide supply range 2 V to 6 V

High-speed operation up to 160 MHz clock

Short propagation delay about 10 ns at 5 V 50 pF

Strong output drive 24 mA high and 24 mA low

Low input capacitance about 3 pF typical

CMOS logic family 74AC

Operating temperature range -40°C to 85°C TA

Through-hole mounting 14-PDIP 0.300 in 7.62 mm body width

RoHS3 compliant lead-free

Key Advantages

Fast and clean clocked storage for high-speed designs

Wide VCC range makes it easy to use in both 3 V and 5 V systems

Strong drive can directly drive LEDs small relays or multiple logic inputs

Simple pin-compatible upgrade path within 74xx families

Robust through-hole PDIP for easy prototyping and reliable manufacturing

Proven 74AC series performance and availability

Packaging

Type 14-PDIP dual in-line package through-hole

Body width 0.300 in 7.62 mm standard DIP row spacing 7.62 mm

Pin count 14 lead pitch 2.54 mm 0.1 in

Material molded epoxy body with copper alloy leadframe lead-free plating per RoHS3

Package delivery Tube

Typical pin configuration for 74AC74 family

1 CLR

2 D1

3 CLK1

4 PRE1

5 Q1

6 Q1

7 GND

8 Q2

9 Q2

10 PRE2

11 CLK2

12 D2

13 CLR2

14 VCC

Refer to the datasheet for the exact pinout of SN74AC74N

Thermal characteristics PDIP has moderate thermal resistance in free air typical θJA values are in the tens to low hundreds of °C W range consult datasheet for exact numbers and derating

Electrical properties family-level highlights VCC 2 to 6 V IOH IOL up to 24 mA per output tPD about 10 ns at 5 V 50 pF fCLK up to about 160 MHz CIN about 3 pF quiescent current very low per datasheet

Note The provided parameter Current Quiescent Iq 2 A appears to be a typo actual Iq is in the microampere range Please verify the correct value in the datasheet

Lifecycle

Status believed active and supported by Texas Instruments not near discontinuation as of the latest available information Always confirm current status on our website or with our sales team

Equivalent or alternative models functional compatibility depends on voltage levels speed package and input thresholds Verify details before substitution

Texas Instruments SN74ACT74N TTL-level inputs similar function PDIP

Texas Instruments SN74HC74N lower speed lower power PDIP

Texas Instruments SN74AHC74N higher speed AHC family PDIP availability varies

Texas Instruments CD74ACT74E ACT family PDIP

onsemi MC74AC74N AC family PDIP

Nexperia 74AC74N AC family PDIP

Nexperia 74HC74N HC family PDIP

STMicroelectronics M74HC74B1 DIP HC family availability varies

Diodes Inc 74HC74N HC family PDIP availability varies

For surface-mount or lower-voltage designs consider 74LVC74A 74VHC74 74AHC74 in SOIC TSSOP or other SMD packages

If you need exact drop-in replacements or automotive qualified versions contact our sales team via the Y-IC website for tailored recommendations

Key Application Areas

Clocked data storage and synchronization

Frequency division and toggle flip-flop f divide by 2

Edge detection and pulse stretching

Counters state machines and control logic

Shift registers and small FIFOs building blocks

Microcontroller FPGA and ASIC interfacing

Debouncing and signal conditioning when clocked

LED driving and small load control via strong CMOS outputs

Datasheet

Y-IC hosts the most authoritative datasheet and technical resources for this product model on our website. Download the SN74AC74N datasheet on this page for full pinout logic diagrams timing characteristics AC DC specs absolute maximum ratings and application notes. We recommend reviewing the datasheet to confirm all electrical and thermal limits before design-in.

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