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 Price 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
RS Stock No. 171-3034
Mfr. Part No.TC7SZ34FU
BrandToshiba
TWD1.30
Each (On a Reel of 3000)
units
- Non-Inverting - 1 - CMOS CMOS Non-Inverting Surface Mount SOT-353 5 -32mA 32mA 11 ns @ 15 pF
RS Stock No. 186-8665
Mfr. Part No.NLX2G17AMX1TCG
TWD10.90
Each (In a Pack of 25)
units
- Buffer - 2 Yes Schmitt Trigger Schmitt Trigger Non-Inverting Surface Mount ULLGA 6 -32mA 32mA 7.5 ns @ 50 pF
RS Stock No. 186-7306
Mfr. Part No.MC74VHC1G50DTT1G
TWD2.20
Each (On a Reel of 3000)
units
VHC Buffer - 1 - CMOS Bipolar Schottky TTL Non-Inverting Surface Mount TSOP 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 798-8881
Mfr. Part No.74AHC125T14-13
TWD10.90
Each (In a Pack of 25)
units
AHC Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount TSSOP 14 -4mA 8mA 14.5 ns @ 50 pF
RS Stock No. 162-9120
Mfr. Part No.NL17SV16XV5T2G
TWD6.20
Each (On a Reel of 4000)
units
NL Buffer - 1 No Single Ended Single Ended Non-Inverting Surface Mount SOT-553 5 -24mA 24mA 6.2 ns @ 30 pF
RS Stock No. 166-1663
Mfr. Part No.NC7WZ17L6X
TWD4.00
Each (On a Reel of 5000)
units
TinyLogic UHS Buffer - 2 Yes Schmitt Trigger Single Ended Non-Inverting Surface Mount MicroPak 6 -32mA 32mA 15.8ns
RS Stock No. 186-8227
Mfr. Part No.NL17SZ07DFT2G
TWD5.70
Each (In a Pack of 50)
units
- Buffer - 1 - Single Open Drain Non-Inverting Surface Mount SC 5 - 32mA 9.5 ns @ 50 pF
RS Stock No. 896-6765
Mfr. Part No.TC7SZ125F,LJ(CT
BrandToshiba
TWD4.20
Each (In a Pack of 100)
units
CMOS - - - - - - - Surface Mount SSOP 5 -32mA 32mA 6 ns@ 50 pF
RS Stock No. 796-8278
Mfr. Part No.SN74LVT16244BDGGR
TWD65.50
Each (In a Pack of 2)
units
74LVT Buffer - - No CMOS, TTL 3 State Non-Inverting Surface Mount TSSOP 48 -32mA 64mA 3.2 ns @ 3.3 V
New
RS Stock No. 218-4596
Mfr. Part No.SN74LV1T34DBVR
TWD12.40
Each (In a Pack of 25)
units
CMOS Buffer - 1 No CMOS CMOS - - SOT-23 5 - - -
RS Stock No. 186-8297
Mfr. Part No.MC74VHC1G50DTT1G
TWD8.50
Each (In a Pack of 25)
units
VHC Buffer - 1 - CMOS Bipolar Schottky TTL Non-Inverting Surface Mount TSOP 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 805-1485
Mfr. Part No.M74VHC1G125DTT1G
TWD4.10
Each (On a Tape of 100)
units
VHC Buffer - 1 No Single Ended 3 State Non-Inverting Surface Mount TSOP 5 -8mA 8mA 16 ns @ 50 pF
RS Stock No. 822-8704
Mfr. Part No.74LVC1G17SE-7
TWD2.50
Each (In a Pack of 200)
units
74LVC Buffer - 1 Yes Schmitt Trigger Push-Pull Non-Inverting Surface Mount SOT-353 5 -32mA 32mA 14 ns @ 50 pF
RS Stock No. 152-7175
Mfr. Part No.74AXP2T3407GTX
BrandNexperia
TWD9.60
Each (On a Reel of 5000)
units
AXP Single Buffer - 1 Yes Open Drain Open Drain - Surface Mount XSON 8 - - -
RS Stock No. 166-0159
Mfr. Part No.74LVC06AT14-13
TWD3.20
Each (On a Reel of 2500)
units
LVC NOT - - - CMOS Open Drain - Surface Mount TSSOP 14 -32mA 32mA 5 ns @ 2.7 V
RS Stock No. 896-6762
Mfr. Part No.TC7SZ07FU,LJ(CT
BrandToshiba
TWD3.10
Each (In a Pack of 100)
units
CMOS Line Driver - 1 No Open Drain Open Drain Non-Inverting Surface Mount SSOP 5 - 32mA 10.5 ns @ 50 pF
RS Stock No. 171-3015
Mfr. Part No.TC7SH34F
BrandToshiba
TWD2.00
Each (On a Reel of 3000)
units
- Non-Inverting - 1 - CMOS CMOS Non-Inverting Surface Mount SOT-25 5 -32mA 8mA 13.5 ns @ 50 pF
RS Stock No. 921-0265
Mfr. Part No.74AHCT1G125W5-7
TWD2.80
Each (In a Pack of 100)
units
74AHCT Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-25 5 -8mA 8mA 9.5 ns @ 50 pF
RS Stock No. 483-6768
Mfr. Part No.74HCT7541D,112
BrandNexperia
TWD73.60
Each (In a Pack of 5)
units
HCT Buffer, Line Driver - 8 Yes Single Ended 3 State Non-Inverting Surface Mount SOIC 20 -6mA 6mA 32 ns @ 4.5 V
RS Stock No. 171-3544
Mfr. Part No.74VHCT125AFT
BrandToshiba
TWD9.60
Each (In a Pack of 50)
units
74VHCT - - - - - - - Surface Mount TSSOP 14 -8mA 8mA 9.5 ns @ 50 pF