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 805-6357
Référence fabricantMC74VHC244DWR2G
0,168 €
Each (On a Tape of 20)
Unité
HC - - - - - - - Surface Mount SOIC 20 -25mA 25mA 14.5 ns@ 50 pF
N° de stock RS 171-3584
Référence fabricant74HC244D
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 805-1813
Référence fabricantNL27WZ125USG
0,223 €
Each (On a Tape of 50)
Unité
LCX Buffer - 2 No Single Ended 3 State Non-Inverting Surface Mount US 8 -32mA 32mA 13 ns @ 15 pF
N° de stock RS 171-3008
Référence fabricantTC7SET125F
MarqueToshiba
0,041 €
Each (On a Reel of 3000)
Unité
- - - - - - - - Surface Mount SOT-25 5 -8mA 8mA 13 ns @ 50 pF
N° de stock RS 802-3297
Référence fabricantNC7SZ05P5X
0,083 €
Each (In a Pack of 100)
Unité
TinyLogic UHS Buffer, Driver - 1 No Single Ended Open Drain Inverting Surface Mount SC-70 5 - 32mA 13.4 ns @ 50 pF
N° de stock RS 922-2861
Référence fabricantSN74LVC2G17DBVT
0,513 €
Each (On a Reel of 250)
Unité
LVC Schmitt Trigger Buffer - 2 Yes Single Ended - Non-Inverting Surface Mount SOT-23 6 -32mA 32mA 5.4 ns @ 3.3 V
N° de stock RS 798-9008
Référence fabricant74HC125S14-13
MarqueDiodesZetex
0,272 €
Each (In a Pack of 25)
Unité
HC Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOIC 14 -4mA 5.2mA 150 ns @ 50 pF
N° de stock RS 921-0265
Référence fabricant74AHCT1G125W5-7
MarqueDiodesZetex
0,07 €
Each (In a Pack of 100)
Unité
74AHCT Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-25 5 -8mA 8mA 9.5 ns @ 50 pF
N° de stock RS 662-8957
Référence fabricantSN74LVC2G17DCKT
0,864 €
Each (In a Pack of 5)
Unité
LVC Schmitt Trigger Buffer - 2 Yes Single Ended - Non-Inverting Surface Mount SC-70 6 -32mA 32mA 5.4 ns @ 3.3 V
N° de stock RS 171-3114
Référence fabricantTC7SZ07FE
MarqueToshiba
0,048 €
Each (In a Pack of 100)
Unité
- - - 1 - - - Non-Inverting Surface Mount SOT-553 5 -32mA 32mA 12 ns @ 50 pF
N° de stock RS 891-2796
Référence fabricantTC7SH125F,LF(T
MarqueToshiba
1,156 €
Each (In a Pack of 25)
Unité
CMOS - - - - - - - Surface Mount SSOP 5 -8mA 8mA 13 ns@ 50 pF
N° de stock RS 483-7913
Référence fabricantHEF4050BT,652
MarqueNexperia
0,301 €
Each (In a Pack of 20)
Unité
4000 Buffer, Converter - 6 No Single Ended - Non-Inverting Surface Mount SOIC 16 - - 110 ns @ 5 V
N° de stock RS 688-1515
Référence fabricantMC14049BDG
0,356 €
Each (In a Pack of 5)
Unité
4000 Buffer, Converter - 6 No Single Ended - Inverting Surface Mount SOIC 16 - - 140 ns @ 5 V
N° de stock RS 169-5703
Référence fabricantSN74LVC2G17DCKT
0,496 €
Each (On a Reel of 250)
Unité
LVC Schmitt Trigger Buffer - 2 Yes Single Ended - Non-Inverting Surface Mount SC-70 6 -32mA 32mA 5.4 ns @ 3.3 V
N° de stock RS 806-1407
Référence fabricantMC74HC126ADG
0,231 €
Each (In a Pack of 55)
Unité
LSTTL Buffer - 4 No Single Ended 3 State Non-Inverting Surface Mount SOIC 14 7.8mA 7.8mA 180 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 891-2813
Référence fabricantTC7SZ17FU(T5L,JF,T
MarqueToshiba
0,809 €
Each (In a Pack of 25)
Unité
CMOS Buffer - - Yes CMOS CMOS - Surface Mount USV 5 -32mA 32mA 15.6 ns @ 15 pF
N° de stock RS 145-3866
Référence fabricantNL27WZ07DFT2G
0,046 €
Each (On a Reel of 3000)
Unité
LVTTL Buffer - 2 No Single Ended Open Drain Non-Inverting Surface Mount SC-88 6 - 32mA 12ns
N° de stock RS 171-3363
Référence fabricant74VHCT244AFT
MarqueToshiba
0,10 €
Each (On a Reel of 2500)
Unité
74VHCT - - - - - - - Surface Mount TSSOP 20 -8mA 8mA 10.5 ns @ 50 pF
N° de stock RS 145-3695
Référence fabricantMC74VHC1G50DFT2G
0,026 €
Each (On a Reel of 3000)
Unité
VHC Buffer - 1 No CMOS Bipolar Schottky TTL, CMOS Non-Inverting Surface Mount SC-88A 5 -8mA 8mA 14.5 ns @ 50 pF