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Texas Instruments SN74LVT162240DGGR
- Part No.:
- SN74LVT162240DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVT162240DGGR.pdf
- Description:
- IC BUFFER INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
SN74LVT162240 from Texas Instruments is a 3.3-V ABT 16-bit inverting buffer/driver with 3-state outputs, designed for memory address, clock, and bus interface applications. It features four independent 4-bit sections, symmetrical active-low output-enable (OE) inputs per section, 22-Ω integrated series output resistors, ±12 mA drive capability, and mixed-mode 5-V input tolerance with 3.3-V VCC.
For engineers reviewing the SN74LVT162240 datasheet, SN74LVT162240 pinout, SN74LVT162240 application, or SN74LVT162240 equivalent, key selection criteria include hot-insertion support via Ioff and power-up 3-state, low ground bounce (<0.8 V), flow-through pinout for optimized PCB layout, and compatibility with 2.7–3.6 V unregulated battery operation.
Technical Context
The SN74LVT162240 implements an Advanced BiCMOS Technology (ABT) architecture optimized for 3.3-V operation with low static power dissipation. Each of its four 4-bit sections operates independently with inverting logic and dedicated active-low OE control (1OE–4OE), enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit buffers.
It supports true mixed-signal interfacing: inputs tolerate up to 5.5 V regardless of VCC, while outputs are clamped to VCC + 0.5 V in high state and feature built-in 22-Ω series termination to suppress overshoot/undershoot without external components. Distributed VCC/GND pins and flow-through pin mapping minimize switching noise and simplify routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Output Drive | ±12 mA - sufficient to directly drive TTL loads and moderate-capacitance buses without external buffers |
| Input Voltage Tolerance | Up to 5.5 V - enables direct interfacing with legacy 5-V logic without level shifters |
| Propagation Delay | 2.5 ns (typ, VCC = 3.3 V) - ensures timing integrity in high-speed address and clock distribution paths |
| Ground Bounce (VOLP) | <0.8 V at VCC = 3.3 V - reduces signal integrity risk in dense, multi-driver PCB environments |
| Ioff Current | ±100 µA - prevents backflow current during hot insertion or partial power-down, protecting upstream circuitry |
| Power-Up 3-State | Active below 1.5 V VCC - guarantees high-impedance outputs during power ramp-up/down, avoiding bus contention |
Pinout & Package
TSSOP-48 (DGG) package: 48-pin thin shrink small-outline package, 12.6 mm × 6.1 mm footprint, 1.2 mm max height, JEDEC MO-153 compliant, lead-free (NIPDAU), MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low output enable (per 4-bit section) | Independent control of each 4-bit buffer group; asserts high-impedance when high |
| 1A1–4A4 | Input terminals (16 total) | Inverting data inputs; accept 5-V-tolerant signals with 3.3-V VCC |
| 1Y1–4Y4 | Inverting buffered outputs (16 total) | Drive-strength-controlled outputs with integrated 22-Ω series resistance |
| VCC (Pins 7, 24, 31, 48) | Supply voltage | Distributed power pins reduce simultaneous switching noise and improve PDN stability |
| GND (Pins 4, 10, 15, 21, 27, 32, 38, 45) | Ground reference | Eight GND pins symmetrically placed to minimize ground loop inductance and EMI |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω output series resistors | Eliminates need for external termination resistors, reducing BOM count and PCB area in high-speed bus designs |
| Mixed-mode 5-V input compatibility | Enables seamless integration into hybrid-voltage systems without external level translators or voltage dividers |
| Flow-through pinout architecture | Input and output pins aligned on opposite sides of package, enabling straight trace routing and minimizing layer transitions |
| Hot-insertion support (Ioff + power-up 3-state) | Prevents damage and bus conflicts during live board replacement or modular system expansion |
| Distributed VCC/GND pin placement | Reduces high-frequency supply impedance and localized ground bounce in multi-bit parallel interfaces |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving address lines from a 32-bit microcontroller to multiple SRAM or Flash devices sharing a common bus. IC Role / Device Role / Timing Role: Inverting 16-bit address buffer with per-group OE control, isolating inactive memory banks and minimizing capacitive loading. Use Value: Integrated 22-Ω termination and sub-3 ns propagation delay ensure clean, skew-controlled address edges across 16 lines under 100 pF load. | Use Scenario: Distributing a 50-MHz system clock to four synchronous peripherals with matched trace lengths. IC Role / Device Role / Timing Role: Low-skew, inverting clock driver with independent OE per quadrant, enabling dynamic clock gating per peripheral domain. Use Value: Flow-through pinout and distributed power/ground allow single-layer fanout with <0.5 ns inter-output skew and <0.8 V ground bounce. |
| Backplane Bus Transceiver Interface | Industrial PLC I/O Module |
Use Scenario: Interfacing a 3.3-V FPGA to a legacy 5-V backplane bus carrying control and status signals. IC Role / Device Role / Timing Role: Bidirectional-level-tolerant buffer with 5-V-tolerant inputs and 3.3-V CMOS outputs, managed via discrete OE controls. Use Value: Eliminates external level shifters while maintaining 12 mA drive strength and hot-swap safety via Ioff during module insertion/removal. | Use Scenario: Isolating field-side digital inputs (24 V) and driving relay outputs in a DIN-rail mounted controller. IC Role / Device Role / Timing Role: High-noise-immunity bus interface between isolated microcontroller and optocoupled I/O stage, operating from 3.3-V rail. Use Value: Latch-up immunity >100 mA and ESD protection (2000-V HBM) withstand industrial transients; 2.7–3.6 V operation accommodates wide-input DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH162240DGVR | Higher drive (±24 mA), TTL-output compatible, TVSOP-48 package | Better suited for driving heavier capacitive loads or legacy TTL inputs requiring higher VOH | Select when interfacing to 5-V TTL loads or when >12 mA sink/source is required |
| SN74ALVC162240GR | Lower VCC range (1.65–3.6 V), no 5-V input tolerance, 32-pin LFBGA | Targeted for ultra-low-voltage portable systems where 5-V compatibility is unnecessary | Select only for space-constrained, single-supply 1.8-V/2.5-V designs without mixed-voltage requirements |
Compared with SN74LVT162240, SN74LVTH162240 offers double the output drive but requires tighter layout due to higher switching noise; SN74ALVC162240 reduces voltage flexibility and eliminates 5-V input support, trading robustness for lower static power in compact battery-powered applications.
Availability
SN74LVT162240 is available at Aetrix Electronics and suitable for memory subsystems, clock tree distribution, industrial backplane interfaces, and programmable logic I/O expansion requiring stable component supply and long-term manufacturability.
Supply support for SN74LVT162240 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN74LVT162240 belongs to TI's Widebus™ family of high-speed, low-voltage bus interface devices, engineered specifically for reliable 3.3-V operation in memory, clock, and bus-oriented systems with mixed-voltage interoperability requirements.
FAQ
What is the recommended operating voltage range for SN74LVT162240?
The SN74LVT162240 is specified to operate over a VCC range of 2.7 V to 3.6 V. This allows direct use with unregulated 3.3-V supplies and battery-powered systems where voltage may sag to 2.7 V. Operation outside this range risks functional failure or parametric degradation; the device enters high-impedance state when VCC drops below 1.5 V during power-down.
Does SN74LVT162240 support 5-V input signals while powered from 3.3 V?
Yes, SN74LVT162240 supports input voltages up to 5.5 V regardless of VCC level, enabling direct connection to 5-V logic families without level-shifting circuitry. This mixed-mode capability is confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables, and applies to all 16 input pins (1A1–4A4).
How does SN74LVT162240 handle hot insertion in live backplane systems?
SN74LVT162240 incorporates both Ioff and power-up 3-state circuitry. When VCC = 0 V, Ioff limits current backflow to ±100 µA, preventing damage during insertion. During power ramp-up/down, outputs remain in high-impedance until VCC exceeds 1.5 V, eliminating bus contention-critical for hot-pluggable modules using SN74LVT162240 as interface buffers.
What is the purpose of the 22-Ω series resistance integrated into SN74LVT162240 outputs?
The SN74LVT162240 integrates 22-Ω series resistors on all 16 outputs to dampen transmission-line reflections and suppress overshoot/undershoot in high-speed parallel bus applications. This eliminates the need for discrete termination resistors, simplifying layout, reducing BOM cost, and improving signal integrity on FR-4 traces with characteristic impedance near 50 Ω.
Can SN74LVT162240 be used as a non-inverting buffer?
No, SN74LVT162240 provides inverting logic only: Y = NOT(A). Its function table explicitly defines output inversion for all enabled states. To implement non-inverting buffering, two cascaded SN74LVT162240 sections would be required per bit, doubling propagation delay and power consumption-making it unsuitable for non-inverting applications where timing or efficiency matters.
SN74LVT162240DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVT162240DGGR FAQ
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Please submit a Request for Quotation (RFQ) for SN74LVT162240DGGR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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5.How can I obtain technical support or documentation for SN74LVT162240DGGR?
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6.How does Aetrix verify that SN74LVT162240DGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVT162240DGGR 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 SN74LVT162240DGGR meets industry standards.
7.What is the process for return or replacement of SN74LVT162240DGGR?
All SN74LVT162240DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT162240DGGR, 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 SN74LVT162240DGGR part is unused and in its original packaging.
Return procedure for SN74LVT162240DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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