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Texas Instruments SN74ALVCH162820GR
- Part No.:
- SN74ALVCH162820GR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ALVCH162820GR.pdf
- Description:
- IC FF D-TYPE SNGL 10BIT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
SN74ALVCH162820GR from Texas Instruments is a 3.3-V, 10-bit edge-triggered D-type flip-flop with dual true outputs (Q1/Q2 per bit) and 3-state outputs, operating across 1.65 V to 3.6 V supply range, featuring bus-hold on all data inputs and integrated 26-Ω series output resistors for overshoot/undershoot suppression - used in high-speed address/data latching and bus interface applications in industrial control and telecom backplanes.
For engineers reviewing the SN74ALVCH162820GR datasheet, SN74ALVCH162820GR pinout, SN74ALVCH162820GR application, or SN74ALVCH162820GR equivalent, key selection considerations include its dual-output architecture per flip-flop, 3-state output-enable timing (ten = 5.6 ns typ at 3.3 V), bus-hold input retention, and TSSOP-56 (DGG) package compatibility with dense PCB layouts requiring low-voltage 3.3-V logic interfacing.
Technical Context
This device implements ten independent positive-edge-triggered D-type flip-flops, each with two buffered, identical true outputs (Q1 and Q2) and a shared 3-state output-enable (OE) control per group (1OE for bits 1–5, 2OE for bits 6–10). Clock-to-Q propagation delay is 5.4 ns typical at 3.3 V, supporting up to 150 MHz operation.
The dual-output structure enables simultaneous fanout to separate signal paths without external buffering, while bus-hold circuitry maintains valid logic states on unused D inputs without pullup/pulldown resistors. OE is non-inverting and does not affect internal flip-flop state retention during high-impedance output mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - supports mixed-voltage system interfacing and low-power operation down to 1.65 V. |
| Max Clock Frequency | 150 MHz - enables use in high-speed synchronous data capture and pipeline staging. |
| tpd (CLK→Q) | 5.4 ns typical at VCC = 3.3 V - ensures tight timing margins in 100+ MHz bus interfaces. |
| ten / tdis (OE→Q) | 5.6 ns / 5.0 ns typical at VCC = 3.3 V - allows rapid bus arbitration and dynamic output enable/disable sequencing. |
| Output Drive Strength | ±12 mA - sufficient to drive 50-Ω transmission lines or multiple CMOS loads directly. |
| Input Bus-Hold Current | ±25 µA to ±75 µA depending on VCC - actively holds floating D inputs at valid logic levels, eliminating external biasing. |
| Output Series Resistance | 26 Ω integrated - reduces signal ringing and EMI without requiring external termination resistors. |
Pinout & Package
TSSOP-56 package (DGG), 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, JEDEC MO-153 compliant, RoHS/Green (no Sb/Br), MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Clock input | Positive-edge-triggered global clock for all 10 flip-flops; requires clean, monotonic transition per timing spec. |
| 1OE, 2OE | Output-enable controls | Active-low enables/disables outputs for bits 1–5 (1OE) and 6–10 (2OE); no effect on internal state retention. |
| D1–D10 | Data inputs | Asynchronous D inputs with bus-hold; retain last valid logic level when floating or unconnected. |
| 1Q1–10Q1, 1Q2–10Q2 | True outputs | Each bit has two identical, buffered, 3-state outputs - enables split routing or redundant loading without added buffers. |
| VCC, GND | Power terminals | Single 1.65–3.6 V supply; 12 dedicated VCC/GND pairs distributed across package for low-noise power delivery. |
Key Features
| Feature | Design Value |
|---|---|
| Dual true outputs per bit | Eliminates need for external fanout buffers when driving parallel paths (e.g., register + trace monitor). |
| Integrated 26-Ω series output resistors | Reduces signal reflections and EMI on PCB traces - no external termination required for point-to-point routing. |
| Bus-hold on all data inputs | Maintains stable logic state on unterminated or floating D inputs, preventing metastability and reducing BOM count. |
| Wide VCC range (1.65 V to 3.6 V) | Enables interoperability across 1.8-V, 2.5-V, and 3.3-V logic domains without level shifters. |
| 3-state outputs with fast enable/disable | ten = 5.6 ns / tdis = 5.0 ns typical at 3.3 V - supports time-multiplexed bus sharing in multi-master systems. |
Applications
| Industrial PLC I/O Modules | Telecom Line Card Data Latching |
|---|---|
Use Scenario: Capturing and holding sensor or actuator status signals in modular programmable logic controllers with hot-swap capability. IC Role / Device Role / Timing Role: 10-bit parallel latch synchronizing asynchronous field inputs to the controller's synchronous bus clock domain. Use Value: Dual outputs allow simultaneous feeding of local diagnostics and main data path; bus-hold prevents glitches during module insertion/removal. | Use Scenario: Temporarily storing incoming frame header or control words before forwarding to DSP or packet processor in line cards. IC Role / Device Role / Timing Role: Edge-triggered register providing deterministic setup/hold timing (tsu = 1.4 ns min at 3.3 V) for high-speed serial-to-parallel conversion stages. Use Value: 150-MHz max clock rate and sub-6-ns propagation support 10-Gbps-equivalent framing rates; 3-state outputs isolate bus during reconfiguration. |
| Automotive ADAS Sensor Interface | Test Equipment Digital Pattern Capture |
Use Scenario: Buffering camera or radar pre-processed digital video streams between sensor SoC and image processing unit in autonomous driving ECUs. IC Role / Device Role / Timing Role: Low-voltage (1.8 V–3.3 V) compatible latch ensuring signal integrity across noisy automotive harnesses via integrated 26-Ω termination. Use Value: Wide supply range accommodates varying SoC I/O voltages; dual outputs feed both real-time display path and offline analytics buffer concurrently. | Use Scenario: Capturing high-speed digital stimulus responses during ATE functional testing of FPGAs or ASICs. IC Role / Device Role / Timing Role: Synchronized sampling node with precise clock-to-out timing (tpd = 5.4 ns typ) enabling sub-nanosecond margin analysis. Use Value: Fast enable/disable (ten/tdis < 6 ns) allows dynamic test vector gating; bus-hold prevents undefined states during test pattern transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit dual-output latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16373GR | Octal (8-bit) transparent latch, single output per bit, no dual-Q outputs or bus-hold. | Lacks dual outputs and bus-hold; requires external pullups and separate fanout buffering. | Select only if reduced channel count suffices and board space permits added discrete components. |
| SN74LVC16373ADGGR | 16-bit transparent latch, 3-state, no bus-hold, 1.65–3.6 V, but single output per bit and higher ICC (100 µA vs 40 µA). | Higher static current and no input retention; unsuitable for floating-input environments like hot-plug modules. | Prefer where higher channel density is needed and input biasing is already implemented externally. |
Compared with SN74ALVCH162820GR, SN74ALVCH16373GR offers fewer bits and no dual outputs or bus-hold, increasing BOM and layout complexity; SN74LVC16373ADGGR provides more bits but lacks bus-hold and consumes 2.5× more quiescent current, limiting use in power-constrained or floating-input designs.
Availability
SN74ALVCH162820GR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, telecom line card data latching, and automotive ADAS sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ALVCH162820GR 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 U.S.-based semiconductor company specializing in analog, embedded processing, and logic solutions, with leadership in high-performance, low-voltage interface ICs.
The SN74ALVCH162820GR belongs to TI's Widebus™ family of advanced CMOS logic devices, designed specifically for high-speed, low-voltage bus interface and data latching in space-constrained industrial and communications systems.
FAQ
What is the recommended operating voltage range for the SN74ALVCH162820GR?
The SN74ALVCH162820GR is characterized for operation from 1.65 V to 3.6 V. This wide VCC range allows direct interfacing with 1.8-V, 2.5-V, and 3.3-V logic families without level translation. Operation outside this range may cause functional failure or damage; absolute maximum rating is 4.6 V.
Does the SN74ALVCH162820GR support hot-swap or floating input conditions?
Yes - the SN74ALVCH162820GR includes active bus-hold circuitry on all D inputs, which maintains a valid logic level (high or low) when inputs are left unconnected or float during hot-swap events. This eliminates the need for external pullup/pulldown resistors and prevents metastability in modular systems.
How many outputs does each flip-flop in the SN74ALVCH162820GR provide?
Each of the ten D-type flip-flops in the SN74ALVCH162820GR provides two identical true outputs (Q1 and Q2), enabling concurrent signal routing to separate destinations - such as feeding both a main data path and a diagnostic monitor - without adding external buffers or duplicating logic.
What is the function of the 1OE and 2OE pins on the SN74ALVCH162820GR?
The SN74ALVCH162820GR features two independent active-low output-enable pins: 1OE controls the 3-state outputs for bits 1–5, and 2OE controls bits 6–10. When asserted low, outputs drive high/low logic levels; when high, outputs enter high-impedance state - enabling time-multiplexed bus sharing without affecting internal flip-flop states.
Is the SN74ALVCH162820GR pin-compatible with other TSSOP-56 logic devices?
No - the SN74ALVCH162820GR has a unique pinout optimized for dual-output architecture and distributed power/ground, including 12 VCC/GND pairs and dedicated OE controls. It is not pin-compatible with standard octal or 16-bit latches (e.g., SN74ALVCH16244 or SN74LVC16373); PCB layout must follow the DGG package drawing (MTSS003D) for SN74ALVCH162820GR.
SN74ALVCH162820GR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 10
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.4ns @ 3.3V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 40 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
SN74ALVCH162820GR FAQ
1.How can I place an order for SN74ALVCH162820GR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVCH162820GR 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 SN74ALVCH162820GR reliable?
The price and inventory of SN74ALVCH162820GR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVCH162820GR is usually 5 days.
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Once your SN74ALVCH162820GR 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 SN74ALVCH162820GR?
For technical support, including SN74ALVCH162820GR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVCH162820GR requirements.
6.How does Aetrix verify that SN74ALVCH162820GR is sourced from the original manufacturer or authorized distributors?
All SN74ALVCH162820GR 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 SN74ALVCH162820GR meets industry standards.
7.What is the process for return or replacement of SN74ALVCH162820GR?
All SN74ALVCH162820GR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVCH162820GR, 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 SN74ALVCH162820GR part is unused and in its original packaging.
Return procedure for SN74ALVCH162820GR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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