Latch ICs

A latch IC is a board mounting integrated circuit that is part of the Standard Logic IC family. A latch IC is a bistable multivibrator which has two (Stable) states and a feedback path allowing the device to store information. A Latch IC is an asynchronous device meaning the outputs can change state as soon as the inputs do.RS Components offer an extensive range of Latch IC's from leading manufacturers including Microchip, Nexperia and ON Semiconductor.

What are the different types of Latch IC's?

There are four main types of Latch IC's, SR Latch (Set-Reset) D-Latch (Data) T (toggle) and J-K. Latch IC’S has two inputs and one output. The inputs are referred to as the SET input the RESET input. The main differences between devices are the number and types of inputs they have and how they function and change state.

Environment

The CMOS circuitry used in Integrated circuits from the 4000 series logic IC families means the components are particularly sensitive to static. It is very important to remember that touching a pin while charged with static electricity can damage the IC. Always leave your components in their anti-static protective packaging until they are ready to be used.

Applications

Latch IC's are used in a wide range of electronic applications. Some of the most common are

  • Digital data storage
  • Buffer storage, data transfer and holding registers
  • Memory addressing

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Description Price Logic Family Latch Mode Latching Element Number of Bits Number of Elements per Chip Number of Channels per Chip Output Type Polarity Mounting Type Package Type Pin Count Set/Reset Dimensions Height
RS Stock No. 443-205
Mfr. Part No.SN74HC373N
PHP30.87
Each
units
HC Transparent D Type 8bit - - 3 State Non-Inverting Through Hole PDIP 20 - 24.33 x 6.35 x 4.57mm 4.57mm
RS Stock No. 923-2492
Mfr. Part No.SN74HC373N
PHP26.649
Each (In a Tube of 20)
units
HC Transparent D Type 8bit - - 3 State Non-Inverting Through Hole PDIP 20 - 24.33 x 6.35 x 4.57mm 4.57mm
RS Stock No. 169-5690
Mfr. Part No.SN74LV373APWR
PHP7.499
Each (On a Reel of 2000)
units
LV Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount TSSOP 20 - 6.5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 162-7414
Mfr. Part No.SN74LS279AD
PHP64.05
Each (In a Tube of 40)
units
LS Transparent SR Type 4bit - - - Non-Inverting Surface Mount SOIC 16 - 9.9 x 3.91 x 1.58mm 1.58mm
RS Stock No. 662-8500
Mfr. Part No.SN74LV373APWR
PHP21.094
Each (In a Pack of 5)
units
LV Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount TSSOP 20 - 6.5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 162-7385
Mfr. Part No.SN74HC259PWR
PHP11.27
Each (On a Reel of 2000)
units
HC Addressable D Type 8bit - - - Non-Inverting Surface Mount TSSOP 16 Yes 5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 527-041
Mfr. Part No.CD4044BE
PHP28.046
Each (In a Tube of 25)
units
4000 Transparent SR Type 4bit - - 3 State Non-Inverting Through Hole PDIP 16 - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 662-8187
Mfr. Part No.SN74HC259PWR
PHP26.24
Each (In a Pack of 10)
units
HC Addressable D Type 8bit - - - Non-Inverting Surface Mount TSSOP 16 Yes 5 x 4.4 x 1.15mm 1.15mm
RS Stock No. 169-5687
Mfr. Part No.SN74LS373DWR
PHP21.674
Each (On a Reel of 2000)
units
LS Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 145-0367
Mfr. Part No.CD4043BD
PHP19.018
Each (In a Tube of 40)
units
4000 Transparent SR Type 4bit - - 3 State Non-Inverting Surface Mount SOIC 16 - 9.9 x 3.91 x 1.58mm 1.58mm
RS Stock No. 857-626
Mfr. Part No.SN74ALS573CDW
PHP67.40
Each
units
ALS Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 526-442
Mfr. Part No.SN74HCT573DW
PHP27.573
Each (In a Tube of 25)
units
HCT Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 145-0398
Mfr. Part No.SN74ALS573CDW
PHP50.883
Each (In a Tube of 25)
units
ALS Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 662-8376
Mfr. Part No.SN74LS373DWR
PHP50.936
Each (In a Pack of 5)
units
LS Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 662-8667
Mfr. Part No.SN74LVC16373DGGR
PHP69.972
Each (In a Pack of 5)
units
LVC Transparent D Type 16bit - - 3 State Non-Inverting Surface Mount TSSOP 48 - 12.5 x 6.1 x 1.15mm 1.15mm
RS Stock No. 178-9064
Mfr. Part No.SN74LV573ADW
PHP23.99
Each (In a Tube of 25)
units
LV Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 526-880
Mfr. Part No.TPIC6259DW
PHP207.858
Each (In a Pack of 5)
units
- Addressable D Type 8bit - - Open Drain Inverting Surface Mount SOIC 20 Yes 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 368-6411
Mfr. Part No.SN74LS373N
PHP43.166
Each (In a Tube of 20)
units
LS Transparent D Type 8bit - - 3 State Non-Inverting Through Hole PDIP 20 - 24.33 x 6.35 x 4.57mm 4.57mm
RS Stock No. 178-9066
Mfr. Part No.SN74LVC573ADW
PHP41.055
Each (In a Tube of 25)
units
LVC Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 162-6982
Mfr. Part No.CD74HCT573M96
PHP15.32
Each (On a Reel of 2000)
units
HCT Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm