8551101RA Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The 8551101RA is a single bidirectional 8-channel bus transceiver IC from Texas Instruments in the Fast logic family, featuring 3-state outputs, common control, 20mA sink current at 0.5V for Port A, and 50pF load capacitance rating in a 20-pin ceramic DIP package. It enables bidirectional data transfer on 8-bit buses with 3-state bus isolation for system data bus management. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- 8551101RA Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-channel bidirectional bus transceiver with 3-state outputs for complete bus isolation in shared data bus architectures
- Fast logic family with 20mA sink current (IOL=20mA at VOL=0.5V) for driving heavy bus loads with TTL compatibility
- Common control architecture simplifies bus direction management in system backplane and memory interface designs
- Rugged 20-pin ceramic DIP package with 50pF load capacitance rating for high-reliability military and industrial applications
Applications
The 8551101RA is used in system bus interface and data communication applications requiring bidirectional 8-bit data transfer with bus isolation, such as CPU-to-memory bus buffers, backplane drivers, and legacy computer system data buses. Its 3-state outputs and common control make it ideal for multi-master bus architectures where multiple devices share a common 8-bit data bus with controlled access. The ceramic DIP package makes it appropriate for high-reliability industrial and military electronics requiring extended temperature performance and environmental robustness.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | IOL = 20MA @ VOL = 0.5V & IOH = 3MA @ VOH = 2.4V FOR PORT A |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | F/FAST |
| JESD-30 Code | R-GDIP-T20 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.048A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 120mA |
| Prop. Delay@Nom-Sup | 7ns |
| Propagation Delay (tpd) | 7.5ns |
| Qualification Status | Qualified |
| Schmitt Trigger | NO |
| Screening Level | MIL-STD-883 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output drive capability of the 8551101RA on Port A?
The 8551101RA provides IOL = 20mA at VOL = 0.5V for Port A output low drive and IOH = 3mA at VOH = 2.4V for output high, delivering sufficient current drive for standard TTL bus loads and backplane signal transmission in 8-bit data bus applications.
What package does the 8551101RA use?
The 8551101RA is housed in a 20-pin ceramic DIP (CDIP) package, providing excellent thermal and environmental protection for high-reliability applications. The ceramic package is preferred in military, aerospace, and industrial equipment requiring extended temperature range and long-term reliability.
What logic family does the 8551101RA belong to?
The 8551101RA belongs to the F/FAST logic family, which provides high-speed switching performance with propagation delays faster than standard TTL while maintaining TTL input and output compatibility. This makes it suitable for high-speed bus interface applications in computer and industrial systems.
Does the 8551101RA support 3-state outputs?
Yes, the 8551101RA features 3-state (tri-state) outputs on all 8 channels. When disabled, the outputs present a high-impedance state that allows multiple bus transceivers to share a common data bus without signal contention, controlled by the common control inputs.
What is the maximum load capacitance supported by the 8551101RA?
The 8551101RA is rated for a load capacitance (CL) of 50pF per channel. This specification defines the maximum capacitive bus load under which the device meets its switching speed and output drive specifications in 8-bit bidirectional data bus interface designs.
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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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