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Texas Instruments 74ABTH162245DGVRE4
- Part No.:
- 74ABTH162245DGVRE4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABTH162245DGVRE4.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,088
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Product details
Overview
74ABTH162245DGVRE4 from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs, designed for synchronous two-way data communication between parallel buses. It supports bidirectional A↔B data flow under DIR control, features integrated 25-Ω series resistors on A-port outputs to suppress overshoot/undershoot, and operates at 4.5–5.5 V over –40°C to 85°C. Used in high-speed backplane and motherboard interconnects requiring isolation and noise control.
For engineers reviewing the 74ABTH162245DGVRE4 datasheet, 74ABTH162245DGVRE4 pinout, 74ABTH162245DGVRE4 application, or 74ABTH162245DGVRE4 equivalent, this page delivers verified electrical specs (tPLH/tPHL ≤ 4.9 ns), thermal resistance (θJA = 93°C/W), bus-hold functionality, distributed VCC/GND layout, and flow-through architecture - all critical for signal integrity validation and PCB routing decisions.
Technical Context
The 74ABTH162245DGVRE4 implements dual 8-bit or single 16-bit bidirectional data transfer using separate DIR and OE controls per section. Its EPIC-IIB BiCMOS process enables low power dissipation while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and drive strength (IOL = 64 mA on B port, IOH = –32 mA).
It integrates bus-hold circuitry on all data inputs to maintain valid logic states without external pullups, and uses distributed VCC/GND pins plus flow-through pinout to minimize switching noise and optimize trace routing. The A-port outputs include built-in 25-Ω series termination to reduce reflection-induced ringing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL systems and margin against rail droop. |
| Propagation Delay (A→B) | 1 ns (min) to 4.1 ns (max) at VCC = 5 V - enables ≤244 MHz bus operation with timing margin. |
| B-port Output Drive | IOL = 64 mA, IOH = –32 mA - supports heavy capacitive loads and fanout to multiple TTL inputs. |
| A-port Output Series R | 25 Ω (integrated) - eliminates need for external series termination resistors, saving board space and cost. |
| Bus-Hold Current | ±100 µA at VI = 0.8 V / 2 V - actively holds floating inputs at valid logic levels without external components. |
| Thermal Resistance θJA | 93°C/W (TVSOP package) - defines maximum power dissipation before exceeding junction temperature limits. |
| ESD Protection | >2000 V HBM, >200 V machine model - enhances robustness during handling and system integration. |
Pinout & Package
74ABTH162245DGVRE4 is housed in a 48-pin Thin Very Small-Outline Package (TVSOP), body size 12.5 mm × 6.1 mm × 1.2 mm, with 0.4 mm pitch and JEDEC MO-187AC compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active-high) | Selects data flow direction per 8-bit section: DIR = L → B-to-A; DIR = H → A-to-B. |
| 1OE, 2OE | Output enable input (active-low) | Drives corresponding 8-bit port into high-impedance state when high; must be pulled up for safe power-up. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting bidirectional ports with 25-Ω series output resistance; source/sink up to 12 mA. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting bidirectional ports; sink up to 64 mA / source up to 32 mA; no internal series R. |
| VCC, GND | Power and ground terminals | Distributed across package (12× VCC, 12× GND) to reduce simultaneous switching noise and improve PDN stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω A-port series termination | Eliminates external resistors, reduces PCB component count, and suppresses signal reflections on high-speed traces. |
| Active bus-hold on all data inputs | Maintains stable logic states on unused/floating inputs without external pullup/pulldown resistors. |
| Distributed VCC/GND pin configuration | Minimizes ground bounce (VOLP < 1 V) and supply noise by shortening current return paths. |
| Flow-through pinout architecture | Enables straight-layer PCB routing with minimal layer transitions and reduced crosstalk risk. |
| Latch-up immunity > 500 mA | Meets JESD17 requirements, ensuring reliability in noisy industrial environments with voltage transients. |
Applications
| Industrial Backplane Interconnect | Embedded Controller Data Bus Extension |
|---|---|
|
Use Scenario: Bidirectional data bridging between CPU local bus and peripheral expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: 16-bit transceiver enabling synchronous read/write handshaking with DIR-driven direction switching and OE-controlled isolation during bus arbitration. Use Value: Integrated bus-hold prevents floating inputs during hot-swap events; 25-Ω A-port termination ensures clean edges on 10-cm backplane traces. |
Use Scenario: Extending memory-mapped I/O between ARM-based SoC and FPGA-configured peripheral modules in medical imaging subsystems. IC Role / Device Role / Timing Role: Dual 8-bit transceiver sectioning allows independent control of address vs. data lanes with separate DIR/OE signals. Use Value: 4.1 ns max tPLH supports 200+ MHz burst transfers; distributed VCC/GND maintains signal integrity across mixed-signal PCB zones. |
| Test Equipment Digital I/O Interface | Automated Test Fixture Signal Conditioning |
|
Use Scenario: Level-shifting and bus isolation between pattern generator ASIC and DUT interface connectors in ATE platforms. IC Role / Device Role / Timing Role: Isolates test controller bus from DUT during fault injection; OE disables outputs to prevent contention during reset sequences. Use Value: 64 mA B-port sink capability drives terminated 50-Ω coaxial cables; latch-up immunity withstands ESD events during probe contact. |
Use Scenario: Signal conditioning for legacy parallel port interfaces in semiconductor handler systems requiring noise-immune data capture. IC Role / Device Role / Timing Role: Transceiver buffers and direction-controls signals between handler controller and device-under-test socket. Use Value: Flow-through pinout simplifies 4-layer routing; bus-hold eliminates need for external biasing on unterminated ribbon cable stubs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGVR | 3.3-V only operation (1.65–3.6 V); lower drive (24 mA B-port sink); no integrated A-port series R. | Suitable for modern low-voltage systems but requires external termination and level translation for 5-V interfacing. | Choose for 3.3-V domains where power efficiency > noise suppression; not drop-in for 5-V legacy designs. |
| 74ALVC162245DLR | Wider VCC range (1.65–3.6 V); higher speed (tPD ≤ 3.2 ns); no bus-hold; different pinout (SSOP-48). | Used in high-speed portable equipment; lacks bus-hold, requiring external biasing on unused lines. | Select when minimizing propagation delay is critical and board layout accommodates SSOP-48 footprint and external pullups. |
Compared with 74ABTH162245DGVRE4, SN74LVC162245DGVR trades 5-V compatibility and integrated termination for lower voltage operation, while 74ALVC162245DLR offers faster timing but sacrifices bus-hold and requires mechanical redesign - making the original optimal for robust 5-V industrial interconnects.
Availability
74ABTH162245DGVRE4 is available at Aetrix Electronics and suitable for industrial backplanes, embedded controller bus extension, automated test equipment I/O, and semiconductor handler signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for 74ABTH162245DGVRE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in high-reliability interface ICs.
The ABTH family was engineered for noise-sensitive 5-V digital systems requiring robust bus isolation, controlled edge rates, and zero-external-component operation - targeting industrial control, test instrumentation, and legacy computing infrastructure.
FAQ
What is the operating temperature range for the 74ABTH162245DGVRE4?
The 74ABTH162245DGVRE4 is rated for operation from –40°C to +85°C, matching the commercial-grade SN74ABTH162245 specification. This range supports deployment in industrial enclosures, factory automation hardware, and non-military embedded systems where ambient temperatures remain within these limits. The device does not meet extended military or automotive AEC-Q100 requirements.
Does the 74ABTH162245DGVRE4 require external pull-up resistors on DIR or OE pins?
Yes - OE must be tied to VCC through a pull-up resistor to ensure high-impedance state during power-up or brownout; TI specifies minimum resistance based on driver sink capability. DIR has no internal bias and requires external pull-up/down depending on system-level direction default. Bus-hold applies only to data inputs (A/B ports), not control pins.
Can the 74ABTH162245DGVRE4 be used as two independent 8-bit transceivers?
Yes - the 74ABTH162245DGVRE4 contains two functionally identical 8-bit sections (1A/1B and 2A/2B), each with dedicated DIR and OE controls. This allows independent direction and enable control, enabling concurrent A↔B transfers on one section while isolating the other - ideal for split-address/data bus architectures or multi-zone isolation schemes.
What is the significance of the "E4" suffix in 74ABTH162245DGVRE4?
The "E4" suffix denotes TI's green RoHS-compliant packaging: lead-free with no bromine or antimony-based flame retardants (Green, per TI eco-plan). It confirms compliance with JEDEC MSL Level-1 (unlimited floor life at ≤30°C/60% RH) and CU NIPDAU terminal finish - critical for lead-free reflow processes and environmental compliance documentation.
How does the 25-Ω series resistance on A-port outputs affect signal integrity?
The 25-Ω series resistance on each A-port output acts as source termination matched to typical PCB trace impedances (50–75 Ω), reducing overshoot, undershoot, and ringing without requiring discrete resistors. This improves eye diagram margins on medium-length traces (≤15 cm) in 5-V systems, directly enhancing setup/hold timing margins and EMI performance.
74ABTH162245DGVRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABTH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA; 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TVSOP
74ABTH162245DGVRE4 FAQ
1.How can I place an order for 74ABTH162245DGVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABTH162245DGVRE4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74ABTH162245DGVRE4 reliable?
The price and inventory of 74ABTH162245DGVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABTH162245DGVRE4 is usually 5 days.
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74ABTH162245DGVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABTH162245DGVRE4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74ABTH162245DGVRE4?
For technical support, including 74ABTH162245DGVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABTH162245DGVRE4 requirements.
6.How does Aetrix verify that 74ABTH162245DGVRE4 is sourced from the original manufacturer or authorized distributors?
All 74ABTH162245DGVRE4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74ABTH162245DGVRE4 meets industry standards.
7.What is the process for return or replacement of 74ABTH162245DGVRE4?
All 74ABTH162245DGVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABTH162245DGVRE4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74ABTH162245DGVRE4 part is unused and in its original packaging.
Return procedure for 74ABTH162245DGVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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