SN74LS74A

ACTIVE

Dual D-type pos.-edge-triggered flip-flops with preset and clear

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Product details

Parameters

Channels (#) 2 Technology Family LS VCC (Min) (V) 4.75 VCC (Max) (V) 5.25 Input type Bipolar Output type Push-Pull Clock Frequency (Max) (MHz) 35 IOL (Max) (mA) 8 IOH (Max) (mA) -0.4 ICC (Max) (uA) 8000 Features High speed (tpd 10-50ns) open-in-new Find other D-type flip-flop

Package | Pins | Size

PDIP (N) 14 181 mm² 19.3 x 9.4 SOIC (D) 14 52 mm² 8.65 x 6 SOP (NS) 14 80 mm² 10.2 x 7.8 SSOP (DB) 14 48 mm² 6.2 x 7.8 open-in-new Find other D-type flip-flop

Features

  • Package Options Include Plastic “Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
  • Dependable Texas Instruments Quality and Reliability

 

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Description

These devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs.

The SN54' family is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74' family is characterized for operation from 0°C to 70°C.

 

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet Dual D-Type Positive-Edge -Triggered Flip-Flops With Preset And Clear datasheet Mar. 01, 1988
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
Application notes Power-Up Behavior of Clocked Devices (Rev. A) Feb. 06, 2015
User guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application notes TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
Application notes Designing With Logic (Rev. C) Jun. 01, 1997
Application notes Designing with the SN54/74LS123 (Rev. A) Mar. 01, 1997
Application notes Input and Output Characteristics of Digital Integrated Circuits Oct. 01, 1996
Application notes Live Insertion Oct. 01, 1996

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
10
Description
This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, P, N, or DGV package in a 14 to 24 pin count.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic devices

CAD/CAE symbols

Package Pins Download
PDIP (N) 14 View options
SO (NS) 14 View options
SOIC (D) 14 View options
SSOP (DB) 14 View options

Ordering & quality

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