My Inquiry
My Account
Texas Instruments SN74AVCA406DGGR
- Part No.:
- SN74AVCA406DGGR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74AVCA406DGGR.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,497
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AVCA406 from Texas Instruments is a voltage-translation transceiver for memory card interfaces, supporting MMC, SD, Memory Stick, SmartMedia, and xD-Picture Card standards. It features dual-supply operation (1.4 V to 3.6 V on VCCA, VCCB0, and VCCB1), ±15-kV IEC 61000-4-2 air-gap ESD protection on B-port pins, and configurable mode selection via MODE0/MODE1 for multi-card compatibility. It enables low-voltage microprocessors to interface with higher-voltage memory cards in portable electronics.
For engineers reviewing the SN74AVCA406 datasheet, SN74AVCA406 pinout, SN74AVCA406 application, or SN74AVCA406 equivalent, key selection criteria include its triple-supply voltage translation capability, card-side ESD robustness, mode-configurable 1-/4-/8-bit interface support, and TSSOP-48 package compatibility with space-constrained mobile designs.
Technical Context
The SN74AVCA406 implements bidirectional level-shifting across two independent B-port supply domains (VCCB0 and VCCB1), each powering distinct subsets of B-port I/Os, while A-port logic tracks VCCA. Its direction control architecture uses dedicated DIR pins per signal pair (e.g., 1DIR, 2DIR) rather than global direction signals.
Mode configuration via MODE0/MODE1 selects between SD/SDIO/MMC (0,X), 8-bit MMC/4-bit+GPIO (1,0), and SmartMedia/xD (1,1); CS0/CS1 enable dual-slot operation. Outputs 12A (push-pull) and 14B (open-drain) have mode-dependent drive types - notably swapped in xD mode - and A-port outputs enter high-impedance when both VCCB supplies are off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Voltage-translation transceiver for memory card host interfaces, not a general-purpose level shifter. |
| ESD Protection (B port) | ±15 kV air-gap / ±8 kV contact per IEC 61000-4-2 - eliminates need for external ESD diodes on card side. |
| Supply Range | VCCA, VCCB0, VCCB1 each operate 1.4 V–3.6 V; VCCB0/VCCB1 ≥ VCCA required during normal operation. |
| Interface Modes | Configurable via MODE0/MODE1 for SD/SDIO/MMC (1-/4-bit), 8-bit MMC, SmartMedia, or xD-Picture Card protocols. |
| Package | TSSOP-48 (DGGR), 12.5 mm × 6.1 mm × 1.2 mm body, 0.5 mm pitch, lead-free RoHS-compliant. |
| Operating Temp | –40°C to +85°C ambient - validated for industrial-grade portable device environments. |
| Power State Control | A-port outputs auto-enter high-Z when VCCB0 = VCCB1 = GND - critical for power gating during card removal. |
Pinout & Package
TSSOP-48 (DGGR) package: 12.5 mm × 6.1 mm × 1.2 mm body, 0.65 mm lead pitch, exposed thermal pad (not electrically connected), RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply | Powers all A-port I/Os and control inputs (MODE0, MODE1, CS0, CS1, DIR pins); defines A-side logic thresholds. |
| VCCB0 | B-port supply group 0 | Powers 1B, 2B, 3B, 4B, 9B1, 10B1 - used for primary SD/MMC/MS clock, command, and DAT0–DAT3 signals. |
| VCCB1 | B-port supply group 1 | Powers 5B, 6B, 7B, 8B, 9B2, 10B2, 11B, 12B, 14B - supports dual-slot or extended interface configurations. |
| 1A–13A, 10A1, 10A2 | A-port bidirectional data/control | Host-side signals (e.g., DAT0.h, CMD.h, CLK.h); direction controlled per pair by dedicated DIR pins. |
| 1B–14B, 9B1, 9B2, 10B1, 10B2 | B-port bidirectional data/control | Card-side signals (e.g., DAT0, CMD, CLK); mapped to VCCB0 or VCCB1 based on function and slot assignment. |
| 1DIR–56DIR, 78DIR, 9DIR | Direction control inputs | Individual DIR pins per A/B signal pair (e.g., 1DIR for 1A/1B); driven by host to set data flow direction. |
| MODE0, MODE1 | Interface mode select | Two-pin encoding selects memory card protocol family (SD/SDIO/MMC, SmartMedia/xD, or 8-bit MMC). |
| CS0, CS1 | Card select inputs | Active-low enables Hi-Z state on associated A/B signal groups - enables dual-slot arbitration without external logic. |
| GND | Ground reference | Four dedicated ground pins (pins 17, 24, 33, 40) minimize ground bounce in high-speed bidirectional switching. |
| 12A, 14B | Special-function I/O | 12A: push-pull output (NAND flash mode: open-drain); 14B: open-drain output (NAND flash mode: push-pull) - supports IRQ signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent B-port supplies | VCCB0 and VCCB1 allow simultaneous interfacing to two memory cards operating at different voltages (e.g., 3.3 V SD + 1.8 V eMMC). |
| Triple-supply voltage translation | Supports mixed-voltage systems where host (VCCA = 1.8 V) connects to cards at 2.9 V (VCCB0) and 3.3 V (VCCB1) without external regulators. |
| Mode-selectable interface logic | Hardware-mode pins (MODE0/MODE1) configure internal signal routing and direction control for SD, xD, SmartMedia, or 8-bit MMC - no firmware overhead. |
| Auto high-Z on B-supply loss | When VCCB0 and VCCB1 are both de-energized (card removed), A-port outputs go Hi-Z - prevents back-driving host GPIOs and reduces system leakage. |
| Dedicated DIR-per-signal-pair | Eliminates timing skew and contention risks inherent in shared-direction-bus architectures - essential for reliable 25 MHz SD clock domains. |
| Integrated ESD protection | ±15 kV air-gap ESD on B-port pins meets IEC 61000-4-2 Level 4, removing discrete TVS diodes and saving >3 mm² PCB area per interface. |
Applications
| SD/SDIO Card Interface | MMC and Memory Stick Interface |
|---|---|
|
Use Scenario: Host processor (1.8 V I/O) connects to removable SD card (3.3 V signaling) in smartphone or digital camera. IC Role / Device Role / Timing Role: Bidirectional level translator and ESD protector on CMD, CLK, and DAT[0:3] lines; manages direction per signal using 1DIR–4DIR. Use Value: Enables direct host-to-card connection without external voltage translators or ESD diodes, reducing BOM count and layout complexity. |
Use Scenario: PDA or media player supports both MMC and Sony Memory Stick via shared socket hardware. IC Role / Device Role / Timing Role: Configurable transceiver that re-maps A-port signals to B-port pins per protocol; MODE0/MODE1 select pin grouping and drive strength. Use Value: Single IC replaces multiple discrete translators, supporting legacy MMC and proprietary Memory Stick with identical PCB footprint. |
| SmartMedia and xD-Picture Card | Dual-Slot Memory Card Hub |
|
Use Scenario: Industrial handheld scanner reads legacy SmartMedia cards (3.3 V) and Fujifilm xD cards (2.7 V) using one connector. IC Role / Device Role / Timing Role: Mode-configured translator with open-drain 14B for xD interrupt signaling; VCCB0/VCCB1 independently biased per card voltage. Use Value: Eliminates need for separate card-specific interface circuits - reduces design reuse effort and qualification cost across product variants. |
Use Scenario: Set-top box provides simultaneous SDIO Wi-Fi module (Slot 0) and SD storage (Slot 1) via single host controller. IC Role / Device Role / Timing Role: Dual-B-port transceiver with CS0/CS1 enabling independent Hi-Z control; 9B2 and 14B support dual-card IRQ arbitration. Use Value: Allows concurrent card operation with zero additional glue logic - simplifies driver development and avoids time-division multiplexing latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-translation transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC4T245RGYR | Quad-channel, dual-supply (1.2 V–3.6 V), no integrated ESD protection, no MODE/CS pins, fixed 4-bit direction control. | Requires external ESD diodes and discrete logic for multi-card mode selection; limited to single-slot, fixed-width interfaces. | Choose for cost-sensitive, single-protocol designs where board space allows added protection components. |
| MAX3380EETE+ | Single-supply (2.7 V–3.6 V), integrated ±15 kV ESD, but only supports SD/SDIO - no MMC, Memory Stick, or xD modes. | Lacks MODE0/MODE1 and dual-VCCB architecture; cannot emulate SmartMedia or xD electrical behavior or timing. | Choose only when targeting SD/SDIO exclusively and requiring minimal pin count (16-TQFN vs. 48-TSSOP). |
Compared with SN74AVCA406, SN74AVC4T245RGYR lacks ESD integration and multi-card configurability, increasing system-level component count, while MAX3380EETE+ sacrifices protocol flexibility for compactness - making SN74AVCA406 the sole solution supporting five memory card standards in one package.
Availability
SN74AVCA406 is available at Aetrix Electronics and suitable for mobile phones, digital cameras, and portable media players requiring stable component supply, long-term lifecycle support, and compliance with JEDEC JESD22-A114 ESD standards.
Supply support for SN74AVCA406 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 connectivity technologies, with over 90 years of innovation in power management and interface solutions.
The SN74AVCA406 belongs to TI's AVC advanced CMOS logic family, designed specifically for low-voltage, high-reliability memory card interface applications in battery-powered portable electronics.
FAQ
What memory card standards does the SN74AVCA406 support?
The SN74AVCA406 supports MultiMediaCard (MMC), Secure Digital (SD) and SDIO, Memory Stick™, SmartMedia™, and xD-Picture Card™ standards. Support is implemented through hardware-configurable MODE0 and MODE1 pins, which select internal signal routing, direction control mapping, and drive characteristics optimized for each standard's electrical and protocol requirements.
How does the SN74AVCA406 handle power sequencing when a memory card is inserted or removed?
When VCCB0 and VCCB1 are both at GND (e.g., card removed), the SN74AVCA406 places all A-port outputs in high-impedance state - preventing back-current into the host processor. This automatic power-aware behavior eliminates need for software-controlled I/O tri-stating and protects host GPIOs during hot-swap events.
Can the SN74AVCA406 interface with two memory cards simultaneously?
Yes - the SN74AVCA406 supports dual-slot operation using CS0 and CS1 to independently place A-port and B-port signal groups into high-impedance. For example, Table 5 shows SDIO in Slot 0 (using VCCB0) and SD in Slot 1 (using VCCB1), with 9B2 and 14B enabling interrupt arbitration between cards.
What is the purpose of the separate VCCB0 and VCCB1 supplies on the SN74AVCA406?
VCCB0 powers B-port pins 1B, 2B, 3B, 4B, 9B1, and 10B1 - typically used for primary SD/MMC signals. VCCB1 powers 5B–8B, 9B2, 10B2, 11B, 12B, and 14B - assigned to secondary slots or extended functions. This separation allows interfacing with cards operating at different voltages (e.g., 1.8 V eMMC + 3.3 V SD) without level-shifting between them.
Does the SN74AVCA406 require external ESD protection diodes?
No - the SN74AVCA406 integrates ±15 kV IEC 61000-4-2 air-gap and ±8 kV contact discharge ESD protection on all B-port pins, meeting the highest system-level ESD immunity requirements for memory card connectors. External diodes are unnecessary and would degrade signal integrity at high speeds.
SN74AVCA406DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCA
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.4 V ~ 3.6 V
- Voltage - VCCB:
- 1.4 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain, Push-Pull
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- SIM Card Interface
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFSOP (0.240", 6.10mm Width)
SN74AVCA406DGGR FAQ
1.How can I place an order for SN74AVCA406DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AVCA406DGGR 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 SN74AVCA406DGGR reliable?
The price and inventory of SN74AVCA406DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVCA406DGGR is usually 5 days.
3.What payment methods are accepted for SN74AVCA406DGGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AVCA406DGGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AVCA406DGGR?
SN74AVCA406DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AVCA406DGGR 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 SN74AVCA406DGGR?
For technical support, including SN74AVCA406DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCA406DGGR requirements.
6.How does Aetrix verify that SN74AVCA406DGGR is sourced from the original manufacturer or authorized distributors?
All SN74AVCA406DGGR 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 SN74AVCA406DGGR meets industry standards.
7.What is the process for return or replacement of SN74AVCA406DGGR?
All SN74AVCA406DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCA406DGGR, 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 SN74AVCA406DGGR part is unused and in its original packaging.
Return procedure for SN74AVCA406DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AVCA406DGGR Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
