Buffers

Buffers, also known as logic buffers are semiconductor IC (integrated circuit) that are constructed of two inverters that are back to back providing a basic logic gate that passes its input, unchanged, to its output. Buffer ICs are also available in both inverting and non-inverting.

How do buffers work?

The primary purpose of a buffer IC is to regenerate the input, primarily using a strong low and high and also to regenerate weak output from non-restoring logic. They are also used to increase the propagation delay of circuits by driving the large capacitive load.

Buffers also feature transceivers and drivers that are used to regenerate the input utilising a strong high and a strong low. Buffer gates serve as an amplifier of a weak signal source is cant source a lot of current whilst increasing the current capacity of the signal so as to be able to drive a load.

Types of buffers

Buffers are available with a variety of configurations such as variations on the number of channels available, supporting a variety of different inputs and outputs such as CMOS, DTL (Diode-Transistor Logic) and single-ended and providing support for a range of logic families such as HC, HEF and TTL. Buffers are also available in combination with a converter.

Another type of buffer that is available is Bus buffers. A bus buffer is an IC that connects multiple data sources to a single bus. The open drivers can be selected to be either a logical high, a logical low, or high impedance which allows other buffers to drive the bus. Like buffers, variations of bus buffers are available such as support for different logic families, inputs, outputs as well as the number of pins configured on the IC.

Bus buffers are used in applications such as TV and video equipment, industrial controls and portable equipment.

Application

Buffers have a wide range of application use such as;

  • Automatic test equipment
  • Board test systems
  • Instrumentation and characterization equipment
  • Semiconductor test systems

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Description Prix Logic Family Logic Function IC Type Number of Channels Schmitt Trigger Input Input Type Output Type Polarity Mounting Type Package Type Pin Count Maximum High Level Output Current Maximum Low Level Output Current Maximum Propagation Delay Time @ Maximum CL
N° de stock RS 171-3386
Référence fabricant74HC240D
MarqueToshiba
0,274 €
Each (On a Reel of 2000)
Unité
74HC - - - - - - - Surface Mount SOIC 20 -7.8mA 7.8mA 165 ns @ 150 pF
N° de stock RS 309-228
Référence fabricantSN74LS365AN
1,28 €
Each
Unité
LS Buffer, Line Driver - 6 No Single Ended 3 State Non-Inverting Through Hole PDIP 16 -2.6mA 24mA 22 ns @ 5 V
N° de stock RS 171-3033
Référence fabricantTC7SZ34FE
MarqueToshiba
0,047 €
Each (On a Reel of 4000)
Unité
- Non-Inverting - 1 - CMOS CMOS Non-Inverting Surface Mount SOT-553 5 -32mA 32mA 11 ns @ 15 pF
N° de stock RS 171-3395
Référence fabricant74VHC126FT
MarqueToshiba
0,241 €
Each (In a Pack of 50)
Unité
74VHC - - - - - - - Surface Mount TSSOP 14 -8mA 8mA 14.5 ns @ 50 pF
N° de stock RS 816-4666
Référence fabricant74HCT1G126GW,125
MarqueNexperia
0,22 €
Each (On a Tape of 75)
Unité
HCT Buffer - 1 No Single Ended 3 State Non-Inverting Surface Mount TSSOP 5 -7.8mA 7.8mA 150 ns @ 50 pF
N° de stock RS 165-8655
Référence fabricant74HCT1G126GW,125
MarqueNexperia
0,055 €
Each (On a Reel of 3000)
Unité
HCT Buffer - 1 No Single Ended 3 State Non-Inverting Surface Mount TSSOP 5 -7.8mA 7.8mA 150 ns @ 50 pF
N° de stock RS 171-3034
Référence fabricantTC7SZ34FU
MarqueToshiba
0,045 €
Each (On a Reel of 3000)
Unité
- Non-Inverting - 1 - CMOS CMOS Non-Inverting Surface Mount SOT-353 5 -32mA 32mA 11 ns @ 15 pF
N° de stock RS 162-8911
Référence fabricantMC74VHC541DWR2G
0,269 €
Each (On a Reel of 1000)
Unité
HC - - - - - - - Surface Mount SOIC 20 -25mA 25mA 12 ns @ 50 pF
N° de stock RS 171-3086
Référence fabricant74HC540D
MarqueToshiba
0,545 €
Each (In a Pack of 10)
Unité
74HC - - - - - - - Surface Mount SOIC 20 -7.8mA 7.8mA 165 ns @ 150 pF
N° de stock RS 145-7324
Référence fabricantSN74AHC1G126DCKR
0,036 €
Each (On a Reel of 3000)
Unité
AHC - - - - - - - Surface Mount SC-70 5 -8mA 8mA 11.5 ns @ 3.3 V
N° de stock RS 634-596
Référence fabricantCD74HCT125E
0,68 €
Each
Unité
HCT Buffer, Line Driver - 4 No Single Ended 3 State Non-Inverting Through Hole PDIP 14 -6mA 6mA 25 ns @ 4.5 V
N° de stock RS 171-3175
Référence fabricantTC7SH126F
MarqueToshiba
0,036 €
Each (In a Pack of 100)
Unité
- - - - - - - - Surface Mount SOT-25 5 -8mA 8mA 14.5 ns @ 50 pF
N° de stock RS 806-1202
Référence fabricantNC7WZ17L6X
0,066 €
Each (In a Pack of 50)
Unité
TinyLogic UHS Buffer - 2 Yes Schmitt Trigger Single Ended Non-Inverting Surface Mount MicroPak 6 -32mA 32mA 15.8ns
N° de stock RS 146-0933
Référence fabricant74AHC1G126W5-7
MarqueDiodesZetex
0,038 €
Each (On a Reel of 3000)
Unité
74AHC Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-25 5 -8mA 8mA 14.5 ns @ 50 pF
N° de stock RS 806-3810
Référence fabricantMC74LVX244DTG
0,176 €
Each (In a Pack of 25)
Unité
LVX - - - - - - - Surface Mount TSSOP 20 -4mA 4mA 17 ns @ 50 pF
N° de stock RS 809-6169
Référence fabricantCD4010BPW
0,345 €
Each (In a Pack of 15)
Unité
4000 Buffer, Converter - - - Single Ended Single Ended Non-Inverting Surface Mount TSSOP 16 -1.65mA 40mA 200 ns@ 50 pF
N° de stock RS 171-3387
Référence fabricant74HC244D
MarqueToshiba
0,261 €
Each (On a Reel of 2000)
Unité
74HC - - - - - - - Surface Mount SOIC 20 -7.8mA 7.8mA 165 ns @ 150 pF
N° de stock RS 806-3841
Référence fabricantMC74LVX50DG
0,317 €
Each (In a Pack of 55)
Unité
LVX Buffer - 6 No CMOS CMOS Non-Inverting Surface Mount SOIC 14 -4mA 4mA 16 ns @ 50 pF
N° de stock RS 186-7341
Référence fabricantNLX2G17AMX1TCG
0,085 €
Each (On a Reel of 3000)
Unité
- Buffer - 2 Yes Schmitt Trigger Schmitt Trigger Non-Inverting Surface Mount ULLGA 6 -32mA 32mA 7.5 ns @ 50 pF
N° de stock RS 662-8948
Référence fabricantSN74LVC2G17DCKR
0,251 €
Each (In a Pack of 10)
Unité
LVC Schmitt Trigger Buffer - 2 Yes Single Ended - Non-Inverting Surface Mount SC-70 6 -32mA 32mA 5.4 ns @ 3.3 V