74FCT162543TPVCTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The 74FCT162543TPVCTG4 is a dual 8-bit registered bus transceiver with latched, bidirectional, non-inverting TTL-compatible operation from Texas Instruments in the fast FCT logic family. It features independent control per 8-bit section and supports 24 mA output sink current in a 56-pin SSOP package. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- OBSOLETE
- Datasheet
- 74FCT162543TPVCTG4 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
- Dual 8-bit registered transceiver architecture with independent control per section allows simultaneous or independent latching and direction control on two separate 8-bit buses
- Non-inverting TTL-compatible bidirectional operation simplifies board-level signal integrity and eliminates the need for additional inversion logic
- FCT (Fast CMOS Technology) family delivers high-speed switching performance with TTL-compatible input thresholds and 5 V supply operation
- Registered (latched) outputs provide internal flip-flop storage for synchronous bus data capture, reducing the need for external registers on address or data buses
- 56-pin SSOP package enables dense integration of 16 registered bidirectional bus bits on a compact PCB footprint for high-density bus buffer applications
Applications
The 74FCT162543TPVCTG4 is used as a 16-bit registered bidirectional bus buffer in processor address and data bus systems, separating and latching bus segments between CPUs, memory controllers, and peripheral ICs. It is a standard component in VMEbus, ISA, and legacy backplane designs where registered isolation of multiple 8-bit or 16-bit bus sections is required with independent direction and latch control. The device also serves in FPGA-to-memory interfaces, PCI bridge circuits, and industrial computing boards where bus hold and synchronous data transfer are needed across large multi-node systems.
Specifications
| YTEOL | 0 |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | FCT |
| JESD-30 Code | R-PDSO-G56 |
| JESD-609 Code | e4 |
| Logic IC Type | REGISTERED BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE WITH SERIES RESISTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP56,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 8.5ns |
| Propagation Delay (tpd) | 12.5ns |
| 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 | CMOS |
| 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 | LOW LEVEL |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does 'registered' mean in the 74FCT162543TPVCTG4 part name?
Registered means the transceiver includes internal latches (flip-flops) that can hold and store bus data. When the latch enable input is deasserted, the outputs retain their last driven values regardless of changes on the input bus. This allows the device to isolate bus segments and hold address or data values stable for downstream logic without requiring separate external registers.
How many bits does the 74FCT162543TPVCTG4 support and how are they organized?
The 74FCT162543TPVCTG4 provides 16 registered bidirectional bus bits organized as two independent 8-bit sections, as indicated by the dual 8-bit function count in its specifications. Each section has its own control inputs for direction and latch enable, allowing the two halves to operate independently on separate bus segments or together as a unified 16-bit transceiver.
What package does the 74FCT162543TPVCTG4 use?
The 74FCT162543TPVCTG4 comes in a 56-pin SSOP (Shrink Small Outline Package), identified by the JESD-30 code R-PDSO-G56. SSOP packages have a 0.635 mm pin pitch, which is finer than standard SOIC, enabling a higher pin count in a compact PCB footprint. The 'G4' suffix confirms RoHS-compliant, lead-free green packaging.
Is the 74FCT162543TPVCTG4 compatible with TTL logic levels?
Yes, the 74FCT162543TPVCTG4 is fully TTL-compatible with standard 5 V TTL input thresholds (VIL 0.8 V, VIH 2.0 V) and TTL-compatible output levels. The FCT (Fast CMOS Technology) family is specifically designed to interface directly with TTL systems, making the device a drop-in replacement for bipolar TTL bus transceivers in legacy 5 V digital systems.
What is the output drive capability of the 74FCT162543TPVCTG4?
Each output of the 74FCT162543TPVCTG4 can sink up to 24 mA at the low logic level (IOL maximum). This drive strength is sufficient to directly drive multiple TTL or CMOS inputs on heavily loaded bus lines without the need for additional bus drivers. The 3-state outputs also allow multiple transceivers to share a common bus without signal contention.
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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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