SN74ABT8543DWRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ABT8543DWRE4 is an octal registered bus transceiver with boundary scan from Texas Instruments in the ABT logic family. It features independent output enable for each direction and supports bidirectional data transfer in a 28-Pin SOIC package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ABT8543DWRE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Octal registered bus transceiver with boundary scan for JTAG-compliant board-level testing
- Independent output enable for each direction enables flexible bidirectional bus control
- ABT logic family provides high-drive output current of 64mA for bus driving applications
- 28-Pin SOIC package with wide availability for standard through-hole and SMT board designs
Applications
The SN74ABT8543DWRE4 is used in bus interface applications where data transfer between two buses must be controlled independently in each direction, such as between processor buses and memory or peripheral buses. Its boundary scan capability makes it well-suited for complex digital systems requiring JTAG-based in-circuit testing and fault diagnosis. It is commonly deployed in telecommunications equipment, networking hardware, and industrial computing systems where reliable bus management and testability are critical.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ABT |
| JESD-30 Code | R-PDSO-G28 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BOUNDARY SCAN REG BUS TRANSCEIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 38mA |
| Prop. Delay@Nom-Sup | 5.5ns |
| Propagation Delay (tpd) | 6.9ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Trigger Type | LOW LEVEL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ABT8543DWRE4:
Bus Transceiver, ABT Series, 8-Func, 8-Bit, True Output, BICMOS, PDSO28
Frequently Asked Questions
What is the SN74ABT8543DWRE4 used for?
The SN74ABT8543DWRE4 is an octal registered bus transceiver with boundary scan capability, used for bidirectional data transfer between two buses in digital systems such as processors, memory controllers, and peripheral interfaces in telecommunications and industrial computing equipment.
Does the SN74ABT8543DWRE4 support JTAG boundary scan testing?
Yes, the SN74ABT8543DWRE4 includes boundary scan register functionality compliant with the IEEE 1149.1 JTAG standard, enabling in-circuit testing, board-level fault diagnosis, and system verification without physical test probes.
What is the output drive current of the SN74ABT8543DWRE4?
The SN74ABT8543DWRE4 provides a maximum output low current (Iol) of 64mA, which is characteristic of the ABT logic family and allows it to drive heavily loaded bus lines in backplane and multi-device bus environments.
What package is the SN74ABT8543DWRE4 available in?
The SN74ABT8543DWRE4 comes in a 28-Pin SOIC (Small Outline Integrated Circuit) package, which is a standard surface-mount package offering reliable solder joints and compatibility with automated PCB assembly processes.
Can the SN74ABT8543DWRE4 control each bus direction independently?
Yes, the SN74ABT8543DWRE4 features independent output enable controls for each direction of data transfer, allowing designers to enable or disable A-to-B or B-to-A data flow separately without affecting the opposite direction.
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