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SN54ALS112A

ACTIVE

Dual J-K Negative-Edge-Triggered Flip-Flops With Clear And Preset

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Data sheet

SN54ALS112A

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Technology family ALS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type TTL Output type Push-Pull Clock frequency (MHz) 34 Supply current (max) (µA) 4000 IOL (max) (mA) -0.4 IOH (max) (mA) 8 Features Clear, High speed (tpd 10-50ns), Negative edge triggered, Preset Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 2 Technology family ALS Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Input type TTL Output type Push-Pull Clock frequency (MHz) 34 Supply current (max) (µA) 4000 IOL (max) (mA) -0.4 IOH (max) (mA) 8 Features Clear, High speed (tpd 10-50ns), Negative edge triggered, Preset Operating temperature range (°C) -55 to 125 Rating Military
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • Fully Buffered to Offer Maximum Isolation From External Disturbance
  • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

 

 
  • Fully Buffered to Offer Maximum Isolation From External Disturbance
  • Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

 

 

These devices contain two independent J-K negative-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 and are inactive (high), data at the J and K inputs meeting the setup-time requirements is transferred to the outputs on the negative-going edge of the clock pulse (CLK). Clock triggering occurs at a voltage level and is not directly related to the fall time of the clock pulse. Following the hold-time interval, data at the J and K inputs may be changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle flip-flops by tying J and K high.

The SN54ALS112A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS112A is characterized for operation from 0°C to 70°C.

 

These devices contain two independent J-K negative-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 and are inactive (high), data at the J and K inputs meeting the setup-time requirements is transferred to the outputs on the negative-going edge of the clock pulse (CLK). Clock triggering occurs at a voltage level and is not directly related to the fall time of the clock pulse. Following the hold-time interval, data at the J and K inputs may be changed without affecting the levels at the outputs. These versatile flip-flops can perform as toggle flip-flops by tying J and K high.

The SN54ALS112A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS112A is characterized for operation from 0°C to 70°C.

 
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Technical documentation

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Type Title Date
* Data sheet Dual J-K Negative-Edge-Triggered Flip-Flops With Clear And Preset datasheet (Rev. A) 01 Dec 1994
* SMD SN54ALS112A SMD 8400002EA 21 Jun 2016
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 15 Dec 2022
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 01 Aug 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996
Application note Advanced Schottky (ALS and AS) Logic Families 01 Aug 1995

Design & development

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Package Pins CAD symbols, footprints & 3D models
CDIP (J) 16 Ultra Librarian
LCCC (FK) 20 Ultra Librarian
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