SN74LVTH2245PWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74LVTH2245PWG4 is an 8-bit non-inverting LVTTL bidirectional bus transceiver with direction control and three-state outputs in a 20-pin TSSOP package. It delivers 64 mA sink current and tolerates 5 V inputs, enabling direct interfacing between 5 V and 3.3 V logic buses. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LVTH2245PWG4 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 SN74LVTH2245PWG4?
- 8-bit bidirectional LVTTL transceiver with direction control pin supports both A-to-B and B-to-A data flow without external logic
- 5 V tolerant inputs on a 3.3 V supply allow direct connection to legacy 5 V TTL buses without external level-shift circuitry
- 64 mA output sink current drives PCB bus lines with up to 50 pF load capacitance at full speed in backplane applications
- 20-pin TSSOP package provides a compact footprint for 8-bit bus-buffer functions on dense industrial and embedded PCBs
What is SN74LVTH2245PWG4 used for?
The SN74LVTH2245PWG4 is widely used to buffer and translate signals between 5 V legacy microprocessor buses and 3.3 V FPGA or DSP I/O banks in industrial control and embedded computing boards. Its bidirectional capability with common direction control makes it straightforward to implement memory expansion interfaces, peripheral bus buffers, and inter-board communication links in PLC and motion-control systems. The TSSOP package fits easily into tight board layouts where space is critical, such as PC/104 and compact embedded modules.
What are the specifications of SN74LVTH2245PWG4?
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | LVT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| 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 WITH SERIES RESISTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 5mA |
| Prop. Delay@Nom-Sup | 4.4ns |
| Propagation Delay (tpd) | 5.1ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 SN74LVTH2245PWG4 datasheet?
SN74LVTH2245PWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LVTH2245PWG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many data bits does the SN74LVTH2245PWG4 handle, and what direction control interface does it use?
The SN74LVTH2245PWG4 handles 8 data bits per device with a single common direction control pin (DIR) and an output-enable pin (OE). When DIR is high, data flows from B to A; when low, data flows from A to B. This 2-pin control interface integrates directly with processor chip-select and read/write signals, reducing the glue logic needed to build a bidirectional 8-bit memory or peripheral bus buffer.
Can the SN74LVTH2245PWG4 directly connect a 5 V microcontroller bus to a 3.3 V FPGA without extra components?
Yes. The LVT family specifies 5 V tolerant A-side and B-side inputs, so the SN74LVTH2245PWG4 accepts standard 5 V TTL logic levels on either port while outputting 3.3 V LVTTL levels on the other. This eliminates external clamping resistors or level-shift ICs, saving at least 8 passive components per 8-bit bus and streamlining PCB layout for FPGA daughter cards attached to 5 V CPU expansion connectors.
What is the maximum output drive strength, and how does it affect the number of loads that can be connected?
Each output can sink up to 64 mA and is rated for a 50 pF load capacitance. In a typical 3.3 V bus where each LVTTL input presents about 5 pF, a single SN74LVTH2245PWG4 output can theoretically drive up to 10 downstream inputs without violating the capacitance budget, making it suitable for memory data buses with multiple SRAM chips or multi-FPGA board topologies.
When would a designer choose SN74LVTH2245PWG4 over the 16-bit SN74LVTH162245 in a new bus design?
For 8-bit microprocessors or peripheral buses where only one byte of data is active at a time, the SN74LVTH2245PWG4 in a 20-pin TSSOP occupies roughly half the PCB area of a 48-pin wide-body package hosting a 16-bit device. Cost savings are also significant: the 8-bit part typically costs 30 to 50 % less per channel. When the full 16-bit bus is always transferred as a single unit, however, the 16-bit device halves the device count and reduces total propagation skew.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit