| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| N74LS243N | YAGEO Corporation | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, PDIP14 | SN74LS243N vs N74LS243N |
| AM25LS243PC | AMD | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, PDIP14 | SN74LS243N vs AM25LS243PC |
| SN54HC243J-00 | Texas Instruments | Check for Price | Bus Transceiver, HC/UH Series, 1-Func, 4-Bit, True Output, CMOS, CDIP14 | SN74LS243N vs SN54HC243J-00 |
| SN54LS243JB | AMD | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, CDIP14 | SN74LS243N vs SN54LS243JB |
| MM74HC243N | Fairchild Semiconductor Corporation | Check for Price | Bus Driver/Transceiver, 1-Func, 4-Bit, True Output, CMOS, PDIP14 | SN74LS243N vs MM74HC243N |
| AM54LS243DM | AMD | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, CDIP14 | SN74LS243N vs AM54LS243DM |
| SN74LS243JP4 | Rochester Electronics LLC | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, CDIP14 | SN74LS243N vs SN74LS243JP4 |
| SN74LS243N3 | Texas Instruments | Check for Price | Bus Transceiver, LS Series, 4-Func, 4-Bit, True Output, TTL, PDIP14 | SN74LS243N vs SN74LS243N3 |
| GD74LS243 | Goldstar Electron Co Ltd | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, PDIP14 | SN74LS243N vs GD74LS243 |
| M38510/32802BCX | Motorola Semiconductor Products | Check for Price | Bus Transceiver, LS Series, 1-Func, 4-Bit, True Output, TTL, CDIP14 | SN74LS243N vs M38510/32802BCX |
Part Details for SN74LS243N by Texas Instruments
Results Overview of SN74LS243N by Texas Instruments
- Distributor Offerings: (8 listings)
- Number of FFF Equivalents: (10 replacements)
- Tariff Estimator: (Available) NEW
- Number of Functional Equivalents: (10 options)
- CAD Models: (Available)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
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SN74LS243N Information
SN74LS243N by Texas Instruments is a Bus Driver/Transceiver.
Bus Driver/Transceivers are under the broader part category of Logic Components.
Digital logic governs the behavior of signals in electronic circuits, enabling complex decisions based on simple binary inputs (yes/no). Logic components perform operations from these signals. Read more about Logic Components on our Logic part category page.
Available Datasheets
| Part # | Manufacturer | Description | Datasheet |
|---|---|---|---|
| SN74LS243NE4 | Texas Instruments | Quad bus transceivers 14-PDIP 0 to 70 | |
| SN74LS243N | Texas Instruments | Quad bus transceivers 14-PDIP 0 to 70 |
Price & Stock for SN74LS243N
| Part # | Distributor | Description | Stock | Price | Buy | |
|---|---|---|---|---|---|---|
|
DISTI #
595-SN74LS243N
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Mouser Electronics | Bus Transceivers Quad bus transceiver RoHS: Compliant | 117 |
|
$3.1800 / $5.5600 | Buy Now |
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Quest Components | IC,BUS TRANSCEIVER,SINGLE,4-BIT,LS-TTL,DIP,14PIN,PLASTIC | 62 |
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$1.4400 / $2.4000 | Buy Now |
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Quest Components | IC,BUS TRANSCEIVER,SINGLE,4-BIT,LS-TTL,DIP,14PIN,PLASTIC | 40 |
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$1.6875 / $2.7000 | Buy Now |
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Quest Components | IC,BUS TRANSCEIVER,SINGLE,4-BIT,LS-TTL,DIP,14PIN,PLASTIC | 20 |
|
$3.3272 / $4.9908 | Buy Now |
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Quest Components | IC,BUS TRANSCEIVER,SINGLE,4-BIT,LS-TTL,DIP,14PIN,PLASTIC | 4 |
|
$1.8099 / $2.4132 | Buy Now |
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Rochester Electronics | Bus Transceiver 1 Element 4 Bits 5V 14-DIP Tube RoHS: Not Compliant Status: Rochester Active Min Qty: 1 | 3629 |
|
$29.1700 / $33.1500 | Buy Now |
|
DISTI #
SN74LS243N
|
TME | IC: digital, transceiver, PDIP14, 0÷85°C, tube Min Qty: 1 | 0 |
|
$2.3800 / $5.1700 | RFQ |
|
|
Component Electronics, Inc | IN STOCK SHIP TODAY | 593 |
|
$1.7500 / $2.6900 | Buy Now |
US Tariff Estimator: SN74LS243N by Texas Instruments
Calculations from this tool are estimations only for imports into the United States. Please refer to the distributor or manufacturer and reference official US government sources and authorities to verify any final purchase costs.
SN74LS243N CAD Models
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SN74LS243N Part Data Attributes
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SN74LS243N
Texas Instruments
Buy Now
Datasheet
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SN74LS243N
Texas Instruments
Bus Transceiver, LS Series, 4-Func, 4-Bit, True Output, TTL, PDIP14
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| Rohs Code | Yes | |
| Part Life Cycle Code | Active | |
| Part Package Code | DIP | |
| Package Description | Pdip-14 | |
| Pin Count | 14 | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.90 | |
| Additional Feature | With Independent Output Enable For Each Direction | |
| Control Type | Independent Control | |
| Count Direction | Bidirectional | |
| Family | Ls | |
| JESD-30 Code | R-PDIP-T14 | |
| JESD-609 Code | e4 | |
| Length | 19.3 Mm | |
| Load Capacitance (CL) | 50 Pf | |
| Logic IC Type | Bus Transceiver | |
| Max I(ol) | 0.024 A | |
| Number of Bits | 4 | |
| Number of Functions | 4 | |
| Number of Ports | 2 | |
| Number of Terminals | 14 | |
| Operating Temperature-Max | 70 °C | |
| Operating Temperature-Min | ||
| Output Characteristics | 3-State | |
| Output Polarity | True | |
| Package Body Material | Plastic/Epoxy | |
| Package Code | DIP | |
| Package Equivalence Code | DIP14,.3 | |
| Package Shape | Rectangular | |
| Package Style | In-Line | |
| Packing Method | Tube | |
| Power Supply Current-Max (ICC) | 54 Ma | |
| Prop. Delay@Nom-Sup | 18 Ns | |
| Propagation Delay (tpd) | 18 Ns | |
| Qualification Status | Not Qualified | |
| Schmitt Trigger | No | |
| Seated Height-Max | 5.08 Mm | |
| Supply Voltage-Max (Vsup) | 5.25 V | |
| Supply Voltage-Min (Vsup) | 4.75 V | |
| Supply Voltage-Nom (Vsup) | 5 V | |
| Surface Mount | No | |
| Technology | Ttl | |
| Temperature Grade | Commercial | |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | |
| Terminal Form | Through-Hole | |
| Terminal Pitch | 2.54 Mm | |
| Terminal Position | Dual | |
| Width | 6.35 Mm |
Alternate Parts for SN74LS243N
This table gives cross-reference parts and alternative options found for SN74LS243N. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of SN74LS243N, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
SN74LS243N Frequently Asked Questions (FAQ)
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The maximum frequency of operation for the SN74LS243N is 30 MHz, but it can vary depending on the specific application and operating conditions.
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No, the SN74LS243N is a 5V device and is not compatible with 3.3V systems. Using it in a 3.3V system may result in unreliable operation or damage to the device.
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In a bus-oriented system, the enable inputs (1G, 2G) should be connected to the bus enable signals. When the bus is enabled, the SN74LS243N will pass the input signals to the output. When the bus is disabled, the outputs will be in a high-impedance state.
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The propagation delay of the SN74LS243N is typically around 10-15 ns, but it can vary depending on the specific application and operating conditions.
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No, the SN74LS243N is not designed to be used as a level shifter. It is a quad bus buffer gate, and its primary function is to buffer and isolate signals in a bus-oriented system.