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Texas Instruments SN74AVCA406GQCR
- Part No.:
- SN74AVCA406GQCR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74AVCA406GQCR.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 48BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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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-/4-/8-bit card protocols. It enables low-voltage microprocessors to interface with higher-voltage memory cards in mobile phones and digital cameras.
For engineers reviewing the SN74AVCA406 datasheet, SN74AVCA406 pinout, SN74AVCA406 application, or SN74AVCA406 equivalent, this page provides verified functional specifications, validated BGA package mapping, confirmed memory-card protocol support (SD/SDIO/MMC/Memory Stick/SmartMedia/xD), and real-world design context for voltage translation, ESD-hardened signal routing, and multi-slot card interface configuration.
Technical Context
The SN74AVCA406 implements a dual-supply bidirectional transceiver architecture where A-port I/Os track VCCA (1.4–3.6 V) and B-port I/Os track either VCCB0 or VCCB1 (also 1.4–3.6 V), with VCCB0/VCCB1 ≥ VCCA required during operation. Its MODE0/MODE1 pins configure interface modes per Table 1: SD/SDIO/MMC/Memory Stick (MODE0=0), 8-bit MMC/4-bit+GPIO (MODE0=1, MODE1=0), or SmartMedia/xD (MODE0=1, MODE1=1).
ESD protection is asymmetric: ±15-kV air-gap and ±8-kV contact discharge per IEC 61000-4-2 apply only to B-port pins (card side), while A-port pins meet JESD22-A114-B (2000-V HBM) and JESD22-C101 (1000-V CDM). When VCCB0 and VCCB1 are both at GND (no card inserted), A-port outputs enter high-impedance state to minimize system power draw.
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 - enables mixed-voltage system interfacing (e.g., 1.8-V host to 3.3-V SD card). |
| ESD Protection | ±15-kV air-gap / ±8-kV contact (IEC 61000-4-2) on B-port pins only - eliminates need for external ESD diodes on card-side traces. |
| Interface Modes | Configurable via MODE0/MODE1: SD/SDIO/MMC/Memory Stick (0,x), 8-bit MMC/4-bit+GPIO (1,0), SmartMedia/xD (1,1) - no firmware required. |
| Output Types | 12A is push-pull; 14B is open-drain (except in NAND flash/xD mode, where roles swap) - supports interrupt signaling and bus sharing. |
| Latch-Up Immunity | Exceeds 100 mA per JESD 78 Class II - ensures robustness against transient current faults in portable systems. |
Pinout & Package
SN74AVCA406 is packaged in a 48-ball VFBGA (GQC) with 4 mm × 4 mm footprint and 0.5-mm ball pitch. Pin assignments are defined for the top-view GQC package per TI SCES615H datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | A-port supply | Powers all A-port I/Os and control inputs (1A–13A, MODE0, MODE1, CS0, CS1, DIR pins); sets A-port switching thresholds. |
| VCCB0 | B-port supply group 1 | Powers 1B, 2B, 3B, 4B, 9B1, 10B1 - used for primary SD/MMC/MS signals like DAT0–DAT3, CMD, CLK. |
| VCCB1 | B-port supply group 2 | Powers 5B–8B, 9B2, 10B2, 11B, 12B, 14B - supports second slot (e.g., SDIO Slot 0 + SD Slot 1) or SmartMedia/xD signals. |
| 14B | Open-drain output (IRQ) | Interrupt request output for dual-card configurations; pulled up externally; active-low assertion to host processor. |
| CS0 / CS1 | Card select controls | Active-low enables Hi-Z isolation of respective A/B port groups - allows independent power gating per memory slot. |
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., 1.8-V SDIO + 3.3-V SmartMedia). |
| Mode-configurable interface logic | Hardware-selectable MODE0/MODE1 pins eliminate software configuration overhead and ensure deterministic boot-time initialization. |
| Automatic A-port Hi-Z on card removal | When VCCB0 = VCCB1 = GND, A-port drivers disable - prevents back-driving host I/Os and reduces standby current in battery-powered devices. |
| Integrated high-level ESD protection | ±15-kV air-gap ESD on B-port pins meets memory card standard requirements - removes need for discrete TVS diodes and saves PCB area. |
| Multi-slot card support | CS0/CS1 enable independent control of two B-port groups, allowing concurrent SDIO (Slot 0) and SD (Slot 1) operation without multiplexing delays. |
Applications
| Mobile Phone Memory Expansion | Digital Camera Dual-Card Interface |
|---|---|
Use Scenario: Smartphone platform integrating SDIO Wi-Fi module and removable microSD card. IC Role / Device Role / Timing Role: Voltage-translating transceiver managing bidirectional data flow between 1.2-V application processor and 3.3-V SDIO/SD peripherals. Use Value: Enables single-chip interface to both high-speed SDIO (Wi-Fi) and legacy SD (storage) using hardware-mode selection and independent VCCB supplies. |
Use Scenario: DSLR camera supporting simultaneous CFast (SD-compatible) and xD-Picture Card slots. IC Role / Device Role / Timing Role: Protocol-agnostic level shifter translating timing-critical command/data signals between 1.8-V image processor and dual-voltage memory cards. Use Value: Eliminates need for separate translators per slot; MODE1/MODE0 pins auto-configure for xD vs SD timing and drive strength requirements. |
| Industrial PDA with SmartMedia Slot | Portable Media Player with Memory Stick PRO |
Use Scenario: Ruggedized handheld terminal requiring SmartMedia card for firmware updates and data logging. IC Role / Device Role / Timing Role: ESD-hardened transceiver isolating 3.3-V SmartMedia bus from 1.8-V ARM-based host controller. Use Value: ±15-kV air-gap ESD protection on B-port pins satisfies industrial handling requirements without external components. |
Use Scenario: High-resolution audio player using Memory Stick PRO for expandable storage. IC Role / Device Role / Timing Role: Bidirectional translator enabling 1.2-V SoC to drive 2.7-V Memory Stick PRO signals with precise direction control via DIR pins. Use Value: Configurable DIR logic (e.g., 9DIR, 1DIR) matches Memory Stick's half-duplex bus timing, avoiding signal contention during read/write transitions. |
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 | 4-bit dual-supply translator; no MODE pins, no integrated ESD beyond HBM/CDM, single VCCB rail. | Lacks memory-card-specific features: no CS0/CS1, no 14B IRQ, no SmartMedia/xD mode support. | Use only for generic level-shifting where protocol-aware control and card-side ESD are not required. |
| MAX3380EETE+ | 3.3-V-only SD card interface with integrated level shifters and ESD; fixed 4-bit width; no multi-supply flexibility. | Designed exclusively for SD/SDIO; incompatible with Memory Stick, SmartMedia, or xD; no VCCA/VCCB0/VCCB1 independence. | Select when targeting SD-only systems with strict 3.3-V supply constraints and no need for multi-standard support. |
Compared with SN74AVCA406, SN74AVC4T245RGYR offers simpler translation but lacks memory-card protocol awareness and certified card-side ESD, while MAX3380EETE+ delivers optimized SD performance but sacrifices multi-standard flexibility and dual-B-supply configurability essential for hybrid memory architectures.
Availability
SN74AVCA406 is available at Aetrix Electronics and suitable for mobile phone memory expansion, digital camera dual-card interface, industrial PDA SmartMedia integration, and portable media player Memory Stick PRO support requiring stable component supply across extended production lifecycles.
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 decades of experience in interface ICs for consumer and industrial applications.
The SN74AVCA406 belongs to TI's AVC advanced CMOS logic family, designed specifically for low-voltage, high-ESD memory card host interfaces in space-constrained portable electronics.
FAQ
What memory card standards does the SN74AVCA406 support?
The SN74AVCA406 supports MultiMediaCard (MMC), Secure Digital (SD), SDIO, Memory Stick, SmartMedia, and xD-Picture Card standards. Support is implemented through hardware-configurable MODE0/MODE1 pins and dedicated B-port supply rails (VCCB0/VCCB1), enabling direct compliance with physical layer requirements of each standard without firmware intervention.
How does the SN74AVCA406 handle power sequencing when a memory card is removed?
When both VCCB0 and VCCB1 are switched off (e.g., card removal), the SN74AVCA406 automatically places all A-port outputs into high-impedance state. This prevents back-current into the host processor and reduces static power consumption - a critical feature for battery-operated devices using the SN74AVCA406.
What is the purpose of the 14B pin on the SN74AVCA406?
The 14B pin on the SN74AVCA406 is an open-drain interrupt output used in dual-card configurations (e.g., SDIO Slot 0 + SD Slot 1). In SmartMedia/xD mode, it functions as IRQ.h - asserted low by the card to signal host attention. Its open-drain structure allows wired-OR connection with other interrupt sources without conflict.
Can the SN74AVCA406 interface a 1.2-V host processor with a 3.3-V SD card?
Yes, the SN74AVCA406 can interface a 1.2-V host processor with a 3.3-V SD card: VCCA is supplied at 1.2 V to match the host, while VCCB0 is set to 3.3 V for the SD card side. The device's dual-supply architecture ensures correct input thresholds and output drive levels on both sides, maintaining signal integrity across the voltage boundary.
Is external ESD protection required when using the SN74AVCA406?
No external ESD protection is required on the B-port (card side) because the SN74AVCA406 integrates ±15-kV air-gap and ±8-kV contact discharge ESD protection per IEC 61000-4-2. However, A-port pins only meet JESD22 HBM/CDM levels (2000 V/1000 V), so additional protection may be needed if A-port traces are exposed to handling ESD in the host system.
SN74AVCA406GQCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCA
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-VFBGA
SN74AVCA406GQCR FAQ
1.How can I place an order for SN74AVCA406GQCR through Aetrix?
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Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
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For technical support, including SN74AVCA406GQCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCA406GQCR requirements.
6.How does Aetrix verify that SN74AVCA406GQCR is sourced from the original manufacturer or authorized distributors?
All SN74AVCA406GQCR 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 SN74AVCA406GQCR meets industry standards.
7.What is the process for return or replacement of SN74AVCA406GQCR?
All SN74AVCA406GQCR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCA406GQCR, 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 SN74AVCA406GQCR part is unused and in its original packaging.
Return procedure for SN74AVCA406GQCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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