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. 333-3252
Mfr. Part No.SN74HC573AN
HK$5.009
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. 217-5667
Mfr. Part No.SN74HC573AN
HK$5.75
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
HK$4.652
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. 162-7414
Mfr. Part No.SN74LS279AD
HK$10.753
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. 634-237
Mfr. Part No.CD74HCT373E
HK$8.26
Each
units
HCT 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. 833-939
Mfr. Part No.CD74HCT573M
HK$8.44
Each
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. 443-205
Mfr. Part No.SN74HC373N
HK$5.39
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. 162-6982
Mfr. Part No.CD74HCT573M96
HK$2.524
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
RS Stock No. 333-4564
Mfr. Part No.CD74HCT373E
HK$5.902
Each (In a Tube of 20)
units
HCT 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. 527-508
Mfr. Part No.CD4043BE
HK$4.893
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. 145-0137
Mfr. Part No.CD4044BE
HK$4.893
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. 662-9629
Mfr. Part No.CD4044BE
HK$5.754
Each (In a Pack of 5)
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. 162-4278
Mfr. Part No.SN74AHC573PWR
HK$1.092
Each (On a Reel of 2000)
units
AHC 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. 145-0155
Mfr. Part No.CD74HC75E
HK$6.644
Each (In a Tube of 25)
units
HC Transparent D Type 4bit - - - Inverting, Non-Inverting Through Hole PDIP 16 - 19.3 x 6.35 x 4.57mm 4.57mm
RS Stock No. 178-9056
Mfr. Part No.SN74HC563DW
HK$10.753
Each (In a Tube of 25)
units
HC Transparent D Type 8bit - - 3 State Inverting Surface Mount SOIC 20 - 12.8 x 7.52 x 2.35mm 2.35mm
RS Stock No. 807-2353
Mfr. Part No.CD4043BDW
HK$4.893
Each (In a Pack of 40)
units
4000 Transparent RS-Latch 4bit - - 3 State Non-Inverting Surface Mount SOIC 16 Yes 10.5 x 7.6 x 2.35mm 2.35mm
RS Stock No. 859-672
Mfr. Part No.CD74AC573E
HK$6.14
Each
units
AC 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. 145-0398
Mfr. Part No.SN74ALS573CDW
HK$9.435
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. 662-7796
Mfr. Part No.SN74AHC573DBR
HK$3.677
Each (In a Pack of 10)
units
AHC Transparent D Type 8bit - - 3 State Non-Inverting Surface Mount SSOP 20 - 7.2 x 5.3 x 1.95mm 1.95mm
RS Stock No. 145-7086
Mfr. Part No.TPIC6259DW
HK$28.644
Each (In a Tube of 25)
units
- Addressable D Type 8bit - - Open Drain Inverting Surface Mount SOIC 20 Yes 12.8 x 7.52 x 2.35mm 2.35mm