SN74ABT16501DLG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74ABT16501DLG4 is an 18-bit non-inverting registered bus transceiver in the ABT logic family, operating at 5 V in a 56-pin SSOP package. It features bidirectional operation with independent output enable per direction and 50 pF load capacitance rating for high-drive bus applications. Available from stock worldwide with fast global shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ABT16501DLG4 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
What are the key features of SN74ABT16501DLG4?
- 18-bit bidirectional registered bus transceiver with independent output enable for each direction, enabling flexible A-to-B or B-to-A data path control in complex backplane designs
- ABT logic family with 5 V operation and 50 pF load capacitance rating, providing high-drive current capability for heavily loaded multi-drop bus architectures
- Non-inverting registered architecture with internal flip-flops on both ports allowing data latching and bus isolation without external register ICs
What is SN74ABT16501DLG4 used for?
The SN74ABT16501DLG4 is designed for high-speed data bus bridging in computer motherboards, FPGA expansion interfaces, and backplane systems where 18 bits of registered data transfer between two bus segments is required. Its independent direction control and output enables allow precise gating of data flow in multi-master bus arbitration schemes. The 56-pin SSOP package offers a compact footprint for dense PCB layouts in server and networking equipment.
What are the specifications of SN74ABT16501DLG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | WITH INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | ABT |
| JESD-30 Code | R-PDSO-G56 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | REGISTERED BUS TRANSCEIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 18 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP56,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 76mA |
| Prop. Delay@Nom-Sup | 4ns |
| Propagation Delay (tpd) | 4.4ns |
| 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 Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74ABT16501DLG4 datasheet?
SN74ABT16501DLG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ABT16501DLG4?
Compatible alternatives and drop-in replacements for SN74ABT16501DLG4:
Bus Transceiver, ABT Series, 18-Func, 18-Bit, True Output, BICMOS, PDSO56
Frequently Asked Questions
How does the independent output enable per direction benefit multi-master bus designs using the SN74ABT16501DLG4?
The separate output enable controls for the A-to-B and B-to-A paths allow the bus master arbitration logic to enable only the active drive direction at any time, preventing bus contention when two masters on opposite sides attempt simultaneous transfers. This feature eliminates the need for external gating logic and reduces propagation delay in time-critical handshake protocols on 18-bit data buses operating at 5 V.
What makes the ABT logic family suitable for heavily loaded multi-drop backplanes compared to older TTL families?
The ABT family provides higher output drive current than standard TTL and CMOS, rated to drive 50 pF load capacitance with fast transition times. On a multi-drop backplane with 8 or more card slots each adding 5-10 pF of bus capacitance, the ABT output stage maintains signal integrity and meets setup-and-hold timing requirements for registered data transfer, whereas older 74LS or 74HC devices would show excessive propagation delay degradation under the same bus load.
In an FPGA interface design, how do the 18-bit registered outputs of the SN74ABT16501DLG4 simplify timing closure?
The on-chip registered architecture clocks data into internal flip-flops on both ports, adding one pipeline stage that decouples the timing between the FPGA output registers and the downstream bus. This register stage absorbs up to one clock cycle of skew and reduces the setup time constraint on the FPGA fabric, allowing the interface to operate at higher clock rates without timing violations in 5 V logic-level board designs.
How should engineers evaluate the SN74ABT16501DLG4 for end-of-life risk given its YTEOL indicator, and what is the procurement approach?
The SN74ABT16501DLG4 carries a YTEOL value of 0, indicating it may be approaching or past its estimated end-of-production life cycle. Engineers designing new systems should evaluate pin-compatible ABT or LVTH series alternatives that remain in active production. For existing designs requiring continued supply, a last-time buy stocking strategy of 2-to-5 years of projected demand is advisable, backed by a distributors' excess inventory check before committing to the build plan.
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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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