SN74BCT623DWRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74BCT623DWRE4 is an 8-bit bidirectional bus transceiver from Texas Instruments in the BCT logic family, providing independent direction control and high output drive of 64mA for heavy bus loads. It features separate output enable and direction controls on each port, supporting flexible 8-bit data bus interfacing in computing and embedded systems. Packaged in a 20-pin SOIC with 50pF load capacitance support, it is ideal for processor-to-memory and backplane bus driving.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74BCT623DWRE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit bidirectional bus transceiver with independent direction and enable control
- High output drive capability of 64 mA (IOL) for heavy bus and backplane loads
- BCT/FBT logic family for TTL-compatible high-speed bus operations
- Separate port A and port B output controls enable flexible bus management
- 50 pF load capacitance support for driving long signal traces reliably
- 20-pin SOIC package with tape-and-reel packaging for high-volume SMT assembly
Applications
The SN74BCT623DWRE4 is used in processor-to-memory data bus interfaces, backplane bus drivers, and multi-board computer systems where high drive strength and bidirectional data transfer are required. It serves as the bidirectional data path between CPUs, FPGAs, and SRAM or DRAM memory arrays in embedded computing platforms and industrial controllers. Its independent port controls also make it suitable for bus protocol bridges and signal-conditioning circuits in test and measurement equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | IOL = 24MA @ VOL = 0.5V & IOH = 3MA @ VOH = 2.4V FOR PORT A |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-PDSO-G20 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 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 | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 92mA |
| Prop. Delay@Nom-Sup | 8ns |
| Propagation Delay (tpd) | 8ns |
| 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 | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| 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 SN74BCT623DWRE4:
Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, True Output, BICMOS, PDSO20
Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, True Output, BICMOS, PDSO20
Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, True Output, BICMOS, PDSO20
Frequently Asked Questions
What is the output drive current of the SN74BCT623DWRE4?
The SN74BCT623DWRE4 provides a maximum output low current (IOL) of 64mA at 0.5V output voltage on port A, along with 3mA output high current (IOH) at 2.4V. This high drive strength allows it to sink significant bus currents on heavily loaded digital buses in backplane and multi-card computing systems.
Is the SN74BCT623DWRE4 bidirectional?
Yes, the SN74BCT623DWRE4 is a bidirectional 8-bit bus transceiver with independent direction control. The DIR pin determines whether data flows from port A to port B or from port B to port A, enabling the device to serve as a full bidirectional interface for read and write operations on shared 8-bit data buses.
What package is the SN74BCT623DWRE4 available in?
The SN74BCT623DWRE4 is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package with wide-body SOIC-20 form factor, suitable for surface-mount PCB assembly. The tape-and-reel packaging indicated by the R suffix makes it compatible with automated SMT pick-and-place manufacturing for high-volume production.
What is the difference between the SN74BCT623 and other 8-bit bus transceivers?
The SN74BCT623DWRE4 belongs to the BCT (BiCMOS Technology) logic family, which combines bipolar output transistors with CMOS inputs to deliver higher output drive strength than pure CMOS transceivers like the 74LCX245. The BCT family provides IOL of 64mA compared to 8-12mA typical for CMOS parts, making it preferable in heavy bus load applications such as VME backplane and ISA bus systems.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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