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Texas Instruments SN74AVCA406DGGRG4
- Part No.:
- SN74AVCA406DGGRG4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74AVCA406DGGRG4.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,960
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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 1-bit/4-bit/8-bit card protocols. 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 considerations include its triple-supply voltage translation architecture, memory-card-specific mode configuration (MODE0/MODE1/CS0/CS1), B-port ESD robustness, A-port high-impedance auto-disable when VCCB0/VCCB1 are off, and TSSOP-48 package compatibility with space-constrained mobile designs.
Technical Context
The SN74AVCA406 implements a bidirectional, direction-controlled voltage translator with separate A-port (microprocessor side) and B-port (card side) supply domains. VCCA powers all A-port I/Os and control inputs; VCCB0 powers B-port signals 1B–4B, 9B1, and 10B1; VCCB1 powers 5B–8B, 9B2, 10B2, 11B, 12B, and 14B. The device requires VCCB0 or VCCB1 ≥ VCCA during normal operation.
Mode configuration is determined by MODE0 and MODE1: logic 00 selects SD/SDIO/MMC/Memory Stick; 10 enables 8-bit MMC/4-bit + GPIO; 11 configures SmartMedia/xD-Picture Card. Outputs 12A and 14B have programmable drive types-push-pull and open-drain respectively in most modes, swapped in NAND flash (xD) mode-enabling protocol-specific signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Voltage-translation transceiver for memory card host interfaces, not a controller or protocol stack. |
| Supply Range | VCCA, VCCB0, VCCB1 each support 1.4 V to 3.6 V independently-enables mixed-voltage system interfacing. |
| ESD Protection | ±15 kV IEC 61000-4-2 air-gap and ±8 kV contact discharge on B-port pins-eliminates need for external ESD diodes. |
| Operating Temperature | –40°C to +85°C-qualified for industrial and consumer portable applications including mobile phones and digital cameras. |
| Package | TSSOP-48 (DGGR), 12.5 mm × 6.1 mm × 1.2 mm body, 0.5-mm pitch-compatible with standard SMT assembly and board-level rework. |
| Latch-Up Immunity | Exceeds 100 mA per JESD 78 Class II-ensures robustness against transient current faults in noisy environments. |
| Human-Body ESD | 2000 V HBM (A114-B) and 1000 V CDM (C101) on A-port pins-meets JEDEC reliability requirements for microprocessor-side I/O. |
Pinout & Package
TSSOP-48 (DGGR) package: 48-pin thin shrink small-outline package with exposed thermal pad, 12.5 mm × 6.1 mm footprint, 0.5-mm lead pitch, and 1.2-mm maximum height. Pin 1 marked by notch or dot; pin numbering follows standard counter-clockwise sequence from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply | Powers all A-port I/Os and control inputs (MODE0, MODE1, CS0, CS1, DIRs); sets A-port switching thresholds. |
| VCCB0 | B-port supply group 0 | Powers B-port pins 1B, 2B, 3B, 4B, 9B1, 10B1-used for primary SD/MMC/MS signal translation. |
| VCCB1 | B-port supply group 1 | Powers B-port pins 5B–8B, 9B2, 10B2, 11B, 12B, 14B-enables dual-slot or extended-memory configurations. |
| 1A–13A | A-port I/Os | Microprocessor-facing bidirectional data/control lines; direction controlled per pair by corresponding DIR pins. |
| 1B–14B | B-port I/Os | Memory-card-facing bidirectional signals; ESD-hardened; grouped by VCCB0/VCCB1 domains. |
| MODE0/MODE1 | Mode select inputs | Determine memory card protocol mapping (SD/SDIO/MMC/MS vs SmartMedia/xD) and data bus width (1/4/8-bit). |
| CS0/CS1 | Card select inputs | Enable/disable translation paths for up to two memory card slots; assert low to activate respective B-port groups. |
| 1DIR–9DIR, 56DIR, 78DIR | Direction controls | Individual or grouped DIR signals set data flow direction per A/B pin pair; referenced to VCCA. |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent supply rails | VCCA, VCCB0, VCCB1 each operate from 1.4 V to 3.6 V-supports heterogeneous voltage domains without level-shifter ICs. |
| Auto high-impedance A-port disable | When VCCB0 = VCCB1 = GND (no card inserted), all A-port outputs enter Hi-Z-reduces system standby power leakage. |
| Configurable drive type on 12A/14B | 12A is push-pull in SD/MS modes but open-drain in xD mode; 14B is open-drain in SD/MS but push-pull in xD-matches protocol electrical requirements. |
| Integrated ESD protection | ±15-kV air-gap and ±8-kV contact discharge on B-port pins per IEC 61000-4-2-replaces discrete TVS diodes and saves PCB area. |
| Multi-standard mode selection | MODE0/MODE1/CS0/CS1 pins configure interface for SD/SDIO, MMC, Memory Stick, SmartMedia, or xD-Picture Card-single IC supports diverse legacy and proprietary cards. |
Applications
| SD/SDIO Card Interface | MMC and Memory Stick Interface |
|---|---|
|
Use Scenario: Mobile phone host processor connecting to removable SD/SDIO cards for storage expansion. IC Role / Device Role / Timing Role: Voltage-translating transceiver managing bidirectional CLK, CMD, and DAT[0:3] signals between 1.8-V host and 3.3-V SD card. Use Value: Eliminates discrete level shifters and external ESD protection while supporting 4-bit high-speed SD mode via MODE0/MODE1 configuration. |
Use Scenario: Digital camera SoC interfacing with legacy MMC or Sony Memory Stick cards. IC Role / Device Role / Timing Role: Protocol-agnostic signal translator handling CMD, CLK, and DATA lines with mode-selectable timing alignment. Use Value: Single-component support for both MMC (1-bit/4-bit) and Memory Stick (serial bus) via pin-strapped MODE settings and dedicated DIR controls. |
| SmartMedia and xD-Picture Card Interface | Dual-Slot Memory Card Support |
|
Use Scenario: Industrial PDA requiring backward compatibility with SmartMedia and xD-Picture Cards. IC Role / Device Role / Timing Role: Mode-configured transceiver delivering open-drain/push-pull drive matching xD's NAND flash signaling and SmartMedia's parallel bus timing. Use Value: MODE1/MODE0 = 11 enables correct drive strength and direction control for xD interrupt (14B) and SmartMedia address/data lines. |
Use Scenario: Set-top box with simultaneous SDIO slot (Wi-Fi module) and SD slot (media storage). IC Role / Device Role / Timing Role: Dual-B-port transceiver using CS0/CS1 to isolate signal paths and prevent cross-talk between slots. Use Value: Enables concurrent operation of two memory cards with independent VCCB0/VCCB1 supplies and isolated DIR/CS control-no software arbitration needed. |
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, 4-bit, dual-supply translator; no integrated ESD protection; no MODE/CS configuration logic. | Requires external ESD diodes; limited to fixed 4-bit translation; no multi-card protocol support. | Choose for simple, cost-sensitive 4-bit level shifting where memory card ESD compliance is handled externally. |
| MAX3380EETG+ | 3.3-V only, 8-bit SD/SDIO transceiver; integrated ±15-kV ESD; single VCC; no VCCB0/VCCB1 separation. | Fixed 3.3-V B-port operation; lacks dual-supply flexibility and dual-slot CS support. | Choose when interfacing only 3.3-V SD cards to 1.8-V/3.3-V hosts and board space permits larger TQFN-24 package. |
Compared with SN74AVCA406, SN74AVC4T245RGYR offers lower channel count and no ESD or mode logic, making it suitable only for basic level shifting; MAX3380EETG+ provides comparable ESD but sacrifices supply flexibility and dual-slot capability-SN74AVCA406 uniquely balances protocol adaptability, triple-supply translation, and integrated protection in TSSOP-48.
Availability
SN74AVCA406 is available at Aetrix Electronics and suitable for mobile phones, digital cameras, and portable media players requiring stable component supply, ESD-hardened memory card interfacing, and compact TSSOP packaging.
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 50 years of innovation in precision analog and interface solutions.
The SN74AVCA406 belongs to TI's AVC advanced CMOS logic family, designed specifically for low-voltage, high-speed, multi-standard 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™ compliant products, SmartMedia, and xD-Picture Card™ standards. Its MODE0/MODE1 pins configure the device for specific card protocols-including SD 1-bit/4-bit modes, MMC, Memory Stick serial bus, SmartMedia parallel interface, and xD NAND flash signaling-with appropriate drive types and direction control.
How does the SN74AVCA406 handle power sequencing when no memory card is inserted?
When VCCB0 and VCCB1 are both at GND (indicating no card insertion), the SN74AVCA406 automatically places all A-port outputs in high-impedance state. This feature reduces static power consumption on the host processor side and prevents unintended signal contention-critical for battery life in portable devices using the SN74AVCA406.
What is the purpose of the separate VCCB0 and VCCB1 supply pins on the SN74AVCA406?
VCCB0 powers B-port pins 1B, 2B, 3B, 4B, 9B1, and 10B1-typically used for primary SD/MMC/MS signals. VCCB1 powers 5B–8B, 9B2, 10B2, 11B, 12B, and 14B-enabling dual-slot configurations (e.g., SDIO + SD) or extended memory interfaces. This separation allows independent voltage assignment and isolation between card slots in the SN74AVCA406.
Can the SN74AVCA406 be used for SPI-mode memory card communication?
Yes-the SN74AVCA406 supports SPI-mode operation for SD/SDIO and MMC cards. In this mode, MODE0/MODE1 are tied low, CS0 is grounded, and direction controls (e.g., 1DIR, 2DIR, 9DIR) are configured to route SCLK, DI, DO, and CS signals bidirectionally between host and card-fully documented in Configuration 1c of the SN74AVCA406 datasheet.
Does the SN74AVCA406 require external ESD protection components?
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 memory card interface requirements without external TVS diodes. A-port pins meet JESD22-A114 (2000-V HBM) and JESD22-C101 (1000-V CDM), eliminating need for additional protection on the host side in most designs using the SN74AVCA406.
SN74AVCA406DGGRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCA
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SN74AVCA406DGGRG4 FAQ
1.How can I place an order for SN74AVCA406DGGRG4 through Aetrix?
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For technical support, including SN74AVCA406DGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCA406DGGRG4 requirements.
6.How does Aetrix verify that SN74AVCA406DGGRG4 is sourced from the original manufacturer or authorized distributors?
All SN74AVCA406DGGRG4 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 SN74AVCA406DGGRG4 meets industry standards.
7.What is the process for return or replacement of SN74AVCA406DGGRG4?
All SN74AVCA406DGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCA406DGGRG4, 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 SN74AVCA406DGGRG4 part is unused and in its original packaging.
Return procedure for SN74AVCA406DGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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