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庫存編號 163-0540
製造零件編號MC14503BDR2G
TWD8.50
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CMOS Buffer - 6 No - 3 State Non-Inverting Surface Mount SOIC 16 19.2mA -8.2mA 200ns
RS庫存編號 806-3254
製造零件編號MC14503BDR2G
TWD20.60
/個 (每包:20個)
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CMOS Buffer - 6 No - 3 State Non-Inverting Surface Mount SOIC 16 19.2mA -8.2mA 200ns
RS庫存編號 806-3251
製造零件編號MC14503BDG
TWD18.80
/個 (每包:20個)
單位
CMOS Buffer - 6 No Single Ended 3 State Non-Inverting Surface Mount SOIC 16 19.2mA -8.2mA 200ns
RS庫存編號 184-4254
製造零件編號MC14050BDG
TWD13.30
毎管:48 個
單位
4000 Buffer - 6 - CMOS - Non-Inverting Surface Mount SOIC 16 -4.7mA 30mA 140 ns @ 50 pF
RS庫存編號 806-3188
製造零件編號MC14050BDR2G
TWD14.00
Each (On a Tape of 50)
單位
CMOS Buffer - 6 No Single Ended - Non-Inverting Surface Mount SOIC 16 30mA -4.7mA 140ns
RS庫存編號 518-8953
製造零件編號MC14050BDG
TWD16.00
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4000 Buffer, Converter - 6 No Single Ended - Non-Inverting Surface Mount SOIC 16 - - 140 ns @ 5 V
RS庫存編號 163-0528
製造零件編號MC14050BDR2G
TWD4.90
個 (在毎卷:2500)
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CMOS Buffer - 6 No Single Ended - Non-Inverting Surface Mount SOIC 16 30mA -4.7mA 140ns
RS庫存編號 166-3308
製造零件編號MM74HCT541WMX
TWD12.60
個 (在毎卷:1000)
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74HC - - - - - - - Surface Mount SOIC 20 7.2mA 7.2mA 45 ns @ 150 pF
RS庫存編號 903-4324
製造零件編號MM74HCT541WMX
TWD24.40
/個 (每包:25個)
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74HC - - - - - - - Surface Mount SOIC 20 7.2mA 7.2mA 45 ns@ 150 pF
RS庫存編號 166-3196
製造零件編號74LCX126MX
TWD8.30
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74LCX Buffer - 4 No Single Ended 3 State Non-Inverting Surface Mount SOIC 14 -24mA 24mA 6 ns @ 50 pF
RS庫存編號 163-2457
製造零件編號MC14049BDG
TWD12.50
毎管:48 個
單位
4000 Buffer, Converter - 6 No Single Ended - Inverting Surface Mount SOIC 16 - - 140 ns @ 5 V
RS庫存編號 917-5541
製造零件編號NC7NZ17K8X
TWD13.90
/個 (每包:50個)
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TinyLogic UHC Buffer - 3 Yes Schmitt Trigger CMOS Non-Inverting Surface Mount JEDEC MO-187 8 -32mA 32mA 13.1 ns @ 15 pF
RS庫存編號 186-7299
製造零件編號MC74LCX125DG
TWD12.30
毎管:55 個
單位
LCX Buffer - 4 - TTL 3 State Non-Inverting Surface Mount SOIC 14 -24mA 24mA 6.5 ns @ 50 pF
RS庫存編號 186-7333
製造零件編號NL17SZ07DFT2G
TWD1.30
個 (在毎卷:3000)
單位
- Buffer - 1 - Single Open Drain Non-Inverting Surface Mount SC 5 - 32mA 9.5 ns @ 50 pF
RS庫存編號 802-1171
製造零件編號74ACT541SC
TWD27.80
毎管:36 個
單位
74ACT Buffer, Driver - 8 No Single Ended 3 State Non-Inverting Surface Mount SOIC 20 -24mA 24mA 9 ns @ 50 pF
RS庫存編號 805-1536
製造零件編號M74VHC1GT126DT1G
TWD4.70
/個 (每包:100個)
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VHC Buffer - 1 No Single Ended CMOS, Single Ended Non-Inverting Surface Mount TSOP 5 -8mA 8mA 16 ns @ 50 pF
RS庫存編號 166-3773
製造零件編號NC7SP125P5X
TWD4.30
個 (在毎卷:3000)
單位
TinyLogic ULP Buffer - 1 No Power Down High Impedance 3 State Inverting Surface Mount SC-70 5 -2.6mA 2.6mA 51.1ns
RS庫存編號 802-1430
製造零件編號74VHCT244AM
TWD25.40
毎管:36 個
單位
74VHCT Buffer, Line Driver - 8 No TTL 3 State Non-Inverting Surface Mount SOIC 20 -8mA 8mA 9.5 ns @ 50 pF
RS庫存編號 163-2265
製造零件編號NL17SZ126DFT2G
TWD1.60
個 (在毎卷:3000)
單位
NL Buffer - 1 No Single Ended 3 State Non-Inverting Surface Mount SC-88A 5 -32mA 32mA 12.5 ns @ 15 pF
RS庫存編號 162-8900
製造零件編號M74VHC1G125DTT1G
TWD2.00
個 (在毎卷:3000)
單位
VHC Buffer - 1 No Single Ended 3 State Non-Inverting Surface Mount TSOP 5 -8mA 8mA 16 ns @ 50 pF