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. 169-7246
Mfr. Part No.74HCT125T14-13
kr 1,086
Each (On a Reel of 2500)
Units
HCT Buffer - 4 No TTL 3 State Non-Inverting Surface Mount TSSOP 14 -4mA 4mA 38 ns @ 50 pF
RS Stock No. 921-0269
Mfr. Part No.74AHCT1G126SE-7
kr 0,639
Each (In a Pack of 100)
Units
74AHCT Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-353 5 -8mA 8mA 9.5 ns @ 50 pF
RS Stock No. 770-5311
Mfr. Part No.74LVC14AT14-13
kr 2,857
Each (In a Pack of 25)
Units
LVC NOT - - - Schmitt Trigger Push-Pull - Surface Mount TSSOP 14 -24mA 24mA 7 ns @ 2.7 V
RS Stock No. 921-0262
Mfr. Part No.74AHCT1G125SE-7
kr 0,187
Each (In a Pack of 100)
Units
74AHCT Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-353 5 -8mA 8mA 9.5 ns @ 50 pF
RS Stock No. 146-0566
Mfr. Part No.74AHC1G125SE-7
kr 0,386
Each (On a Reel of 3000)
Units
74AHC Buffer, Bus driver - 1 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-353 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 822-8666
Mfr. Part No.74AHC1G125SE-7
kr 0,748
Each (In a Pack of 200)
Units
74AHC Buffer, Bus driver - 1 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-353 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 770-5314
Mfr. Part No.74LVC125AT14-13
kr 2,857
Each (On a Tape of 25)
Units
LVC Non-Inverting - - - CMOS 3 State - Surface Mount TSSOP 14 -24mA 24mA 7 ns @ 2.7 V
RS Stock No. 146-0567
Mfr. Part No.74AHC1G125W5-7
kr 0,18
Each (On a Reel of 3000)
Units
74AHC Buffer, Bus driver - 1 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-25 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 921-0313
Mfr. Part No.74LVC2G34DW-7
kr 0,576
Each (In a Pack of 50)
Units
74LVC Buffer, Driver - - No - Push-Pull Non-Inverting Surface Mount SOT-363 6 -32mA 32mA 10.8 ns @ 50 pF
RS Stock No. 827-0263
Mfr. Part No.74AUP2G3404FW3-7
kr 2,281
Each (In a Pack of 50)
Units
CMOS Buffer, Inverter - 2 Yes Schmitt Trigger Push-Pull Inverting, Non-Inverting Surface Mount X2-DFN0910 6 -4mA 4mA 7.2 ns @ 30 pF
RS Stock No. 921-0247
Mfr. Part No.74AHC1G126W5-7
kr 0,785
Each (In a Pack of 100)
Units
74AHC Buffer, Driver - 1 Yes CMOS, Schmitt Trigger 3 State Non-Inverting Surface Mount SOT-25 5 -8mA 8mA 14.5 ns @ 50 pF
RS Stock No. 921-0265
Mfr. Part No.74AHCT1G125W5-7
kr 0,76
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. 169-7236
Mfr. Part No.74HC126S14-13
kr 1,086
Each (On a Reel of 2500)
Units
HC Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Inverting Surface Mount SOIC 14 -4mA 5.2mA 150 ns @ 50 pF
RS Stock No. 169-7224
Mfr. Part No.74AHCT125S14-13
kr 1,086
Each (On a Reel of 2500)
Units
AHCT Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOIC 14 -8mA 8mA 9.5 ns @ 50 pF
RS Stock No. 169-7477
Mfr. Part No.74LV07AS14-13
kr 0,868
Each (On a Reel of 2500)
Units
74LV Buffer - 6 Yes Schmitt Trigger Open Drain - Surface Mount SOIC 14 - 12mA 8.5 ns @ 50 pF
RS Stock No. 827-0305
Mfr. Part No.74LV07AT14-13
kr 0,605
Each (In a Pack of 50)
Units
74LV Buffer - 6 Yes Schmitt Trigger Open Drain - Surface Mount TSSOP 14 - 12mA 8.5 ns @ 50 pF
RS Stock No. 122-1517
Mfr. Part No.74HC125S14-13
kr 1,086
Each (On a Reel of 2500)
Units
HC Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOIC 14 -4mA 5.2mA 150 ns @ 50 pF
RS Stock No. 169-7478
Mfr. Part No.74LV07AT14-13
kr 0,591
Each (On a Reel of 2500)
Units
74LV Buffer - 6 Yes Schmitt Trigger Open Drain - Surface Mount TSSOP 14 - 12mA 8.5 ns @ 50 pF
RS Stock No. 169-7225
Mfr. Part No.74AHCT126S14-13
kr 0,458
Each (On a Reel of 2500)
Units
AHCT Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Inverting Surface Mount SOIC 14 -8mA 8mA 9.5 ns @ 50 pF
RS Stock No. 798-9008
Mfr. Part No.74HC125S14-13
kr 2,957
Each (In a Pack of 25)
Units
HC Schmitt Trigger Buffer - 4 Yes Schmitt Trigger 3 State Non-Inverting Surface Mount SOIC 14 -4mA 5.2mA 150 ns @ 50 pF