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Texas Instruments TPS2214DB
- Part No.:
- TPS2214DB
- Manufacturer:
- Texas Instruments
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TPS2214DB.pdf
- Description:
- IC PWR SWITCH 1:1 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,780
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Product details
Overview
TPS2214DB from Texas Instruments is a dual-slot PC Card power-interface switch designed for serial PCMCIA controllers. It integrates xVCC and xVPP switching for 3.3-V, 5-V, and 12-V power distribution, features 60-mΩ typical rDS(on) for xVCC switches, includes short-circuit and thermal protection, and supports TTL-logic compatible serial control (CLOCK/DATA/LATCH). It enables compliant PC Card hot-swap power management in notebook computers.
For engineers reviewing the TPS2214DB datasheet, TPS2214DB pinout, TPS2214DB application, or TPS2214DB equivalent, key selection considerations include dual-slot independent VPP programming, 3.3-V low-voltage mode operation without 5-V bias, standby-mode 50-mA current limiting, break-before-make switching behavior, and PC Card™ standard compliance for legacy embedded host designs.
Technical Context
The TPS2214DB implements two independent power-switching channels (A and B), each with separate xVCC (3.3/5-V) and xVPP (3.3/5/12-V) outputs controlled via a 11-bit serial interface when MODE = high, or an 9-bit interface when MODE = low or floating. Internal current monitoring and thermal shutdown activate at 155°C with 10°C hysteresis.
It supports three input voltage domains (3.3V, 5V, 12V), all internally regulated for switch biasing, and provides logic-level OC fault reporting. The device operates across –40°C to 125°C junction temperature and meets PC Card™ mechanical and electrical interface requirements for dual-slot card sockets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual-slot PC Card power-interface switch with independent xVCC/xVPP control per slot |
| rDS(on) (xVCC) | 60 mΩ typical at TJ = 25°C, IO = 1 A - ensures ≤60 mV drop at 1-A load for 5-V regulation compliance |
| rDS(on) (xVPP) | 0.7 Ω typical at TJ = 25°C, IO = 50 mA - supports 12-V flash programming with <35 mV drop |
| Current Limit (Normal) | 1 A for xVCC, 200 mA for xVPP at TJ = 70°C - protects against sustained overloads without external fuses |
| Standby Current Limit | 50 mA typical for both xVCC and xVPP - enables low-power sleep-mode card presence detection |
| Logic Interface | Serial CLOCK/DATA/LATCH (11-bit or 9-bit) - reduces host GPIO count vs parallel control schemes |
| Thermal Shutdown | 155°C trip point with 10°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
TPS2214DB is housed in a 24-pin plastic small-outline (DB) package, 300 mil width, with exposed pad not electrically connected. Pin assignments are validated per SLVS206B Rev. June 2000 datasheet Figure 1 (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2,24 (5V) | Input supply | 5-V bias source for internal logic and xVCC/xVPP switching; must be present for full functionality unless 3.3-V low-voltage mode enabled |
| 7,20 (12V) | Input supply | 12-V source exclusively for xVPP outputs; required only when 12-V card programming is needed |
| 13,14 (3.3V) | Input supply | 3.3-V input for chip operation and xVCC outputs; enables full function when 5-V is absent (low-voltage mode) |
| 9,10 (AVCC); 17,18 (BVCC) | Output | Slot A and B VCC outputs - programmable as 3.3-V, 5-V, GND, or high-Z; support up to 1 A continuous |
| 8 (AVPP); 19 (BVPP) | Output | Slot A and B VPP outputs - programmable as 3.3-V, 5-V, 12-V, GND, or high-Z; support up to 200 mA continuous |
| 16 (STBY) | Control input | Active-low signal that forces all xVCC/xVPP current limits to 50 mA; internally pulled high (150 kΩ) |
| 15 (OC) | Status output | Open-drain logic-low fault indicator for overcurrent or overtemperature; requires external pullup |
| 3–6,12 (DATA/CLOCK/LATCH/RESET/RESET) | Serial interface | Asynchronous 3-wire serial bus (plus dual RESET) for configuring slot power states and monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Independent xVPP programming | Enables Slot A and Slot B VPP voltages to be set separately (e.g., 12-V on Slot A for flash erase, 5-V on Slot B for modem), eliminating cross-slot interference |
| 3.3-V low-voltage mode | Allows full device operation using only 3.3-V supply - critical for battery-powered sleep states where 5-V rail is disabled |
| Break-before-make switching | Guarantees no overlap between old and new VCC/VPP states during reconfiguration - prevents card bus contention and latch-up |
| Internal power-on reset | Ensures known initial state (all outputs disabled) at power-up without requiring external POR circuitry |
| Quiescent current ≤150 µA | Minimizes standby power draw in always-on host systems - supports long-duration card presence monitoring |
Applications
| Notebook Computer PC Card Socket | Desktop PCMCIA Expansion Bay |
|---|---|
Use Scenario: Hot-plug insertion of modem or wireless LAN PC Cards into battery-constrained notebooks. IC Role / Device Role / Timing Role: Dual-slot power sequencer and protector managing VCC/VPP ramp timing, current limiting, and fault reporting per slot. Use Value: Enables safe, standards-compliant hot-swap without host firmware intervention; eliminates need for discrete fuses and voltage supervisors. |
Use Scenario: Desktop add-in bay supporting legacy PC Cards (e.g., SCSI adapters, GPS receivers) alongside modern peripherals. IC Role / Device Role / Timing Role: Centralized power interface translating host controller commands into per-slot VCC/VPP enable/disable sequences with built-in current monitoring. Use Value: Reduces BOM count by integrating eight MOSFETs, current sense, thermal protection, and serial logic into one DB-package IC. |
| PDA PC Card Adapter Module | Industrial Barcode Scanner with PCMCIA Slot |
Use Scenario: Compact PDA docking cradle providing PC Card expansion while maintaining tight thermal and power envelopes. IC Role / Device Role / Timing Role: Power manager operating in 3.3-V-only mode to avoid 5-V generation; handles serial configuration from low-pin-count host MCU. Use Value: Achieves full PC Card compliance with minimal board area and zero external passive components beyond decoupling caps. |
Use Scenario: Rugged handheld scanner requiring reliable PC Card support for memory expansion or communication modules in factory environments. IC Role / Device Role / Timing Role: Fault-tolerant power switch with OC reporting and thermal shutdown - critical for unattended operation under variable ambient temperatures. Use Value: Prevents field failures due to card short circuits or overheating; diagnostic OC signal simplifies serviceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PC Card power-interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2216DB | Identical functional specification and pinout per datasheet footnote; differs only in internal pin assignment mapping within DB package | Same dual-slot PC Card use cases; requires verification of PCB layout compatibility due to revised pin functions | Select TPS2216DB only if redesign accommodates updated pin mapping - not a drop-in replacement for existing TPS2214DB layouts |
| TPS2206PWP | Single-slot variant in TSSOP-28; lacks second slot outputs (BVCC/BVPP), reduced serial command set, no 12-V xVPP support | Suitable only for single-card systems; cannot replace dual-slot requirement without architectural change | Choose TPS2206PWP for cost-sensitive single-slot designs where 12-V programming is unnecessary and space allows TSSOP-28 |
Compared with TPS2214DB, TPS2216DB offers identical performance but requires PCB revision due to pin reassignment, while TPS2206PWP sacrifices slot count and 12-V capability to reduce size and cost - neither serves as a direct layout-compatible substitute.
Availability
TPS2214DB is available at Aetrix Electronics and suitable for notebook computer design, industrial barcode scanner development, and legacy PCMCIA expansion bay integration requiring stable component supply and long-term obsolescence management.
Supply support for TPS2214DB 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 and embedded processing solutions for industrial, automotive, and communications markets.
The TPS2214DB belongs to TI's PC Card power management product line, engineered specifically to simplify host controller interface design while ensuring full compliance with PCMCIA mechanical, electrical, and thermal specifications for dual-slot systems.
FAQ
What is the primary function of the TPS2214DB in a PC Card system?
The TPS2214DB serves as a dual-slot PC Card power-interface switch that manages VCC and VPP power delivery, sequencing, current limiting, and fault protection for two independent PC Card slots. It replaces discrete MOSFETs, current-sense resistors, and protection logic with a single integrated solution compliant with PC Card™ standards, enabling hot-swap capability and reducing host controller complexity.
Does the TPS2214DB support 3.3-V-only operation, and how is it enabled?
Yes, the TPS2214DB supports 3.3-V-only operation via its low-voltage mode. This mode activates when the 5-V supply is absent and the 3.3-V input is present, allowing full functionality including serial interface operation and xVCC/xVPP switching. No external configuration is needed - the device automatically enters this mode when VI(5V) = 0 V and VI(3.3V) ≥ 2.7 V.
How does the TPS2214DB handle overcurrent conditions, and what feedback is provided?
The TPS2214DB provides per-output current limiting with automatic foldback during overcurrent events. When triggered, it asserts the open-drain OC pin low to signal fault condition to the host controller. Recovery is automatic after current normalizes. Short-circuit response time is 100 µs for xVCC and 16 µs for xVPP switches, ensuring rapid protection without latching.
Can the TPS2214DB independently configure VPP voltage per slot, and what voltages are supported?
Yes, the TPS2214DB supports independent xVPP programming for Slot A (AVPP) and Slot B (BVPP) via its serial interface. Each xVPP output can be configured to 3.3 V, 5 V, or 12 V - enabling mixed-voltage card configurations (e.g., 12-V flash memory in Slot A, 5-V modem in Slot B) without shared rail constraints.
What is the purpose of the STBY pin on the TPS2214DB, and what happens when it is asserted?
The STBY pin on the TPS2214DB is an active-low input that places the device into standby mode. When pulled low, it reduces all xVCC and xVPP current limits to 50 mA (typical), enabling low-power card presence detection and safe initialization sequences. The pin is internally pulled high with a 150-kΩ resistor, so no external pullup is required for normal operation.
TPS2214DB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Switch Type:
- PCMCIA Switch
- Number of Outputs:
- 4
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- -
- Interface:
- Serial
- Voltage - Load:
- 3.3V, 5V, 12V
- Voltage - Supply (Vcc/Vdd):
- -
- Current - Output (Max):
- -
- Rds On (Typ):
- 70mOhm
- Input Type:
- -
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TPS2214DB FAQ
1.How can I place an order for TPS2214DB through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2214DB 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 TPS2214DB reliable?
The price and inventory of TPS2214DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2214DB is usually 5 days.
3.What payment methods are accepted for TPS2214DB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2214DB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2214DB?
TPS2214DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2214DB 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 TPS2214DB?
For technical support, including TPS2214DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2214DB requirements.
6.How does Aetrix verify that TPS2214DB is sourced from the original manufacturer or authorized distributors?
All TPS2214DB 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 TPS2214DB meets industry standards.
7.What is the process for return or replacement of TPS2214DB?
All TPS2214DB units undergo pre-shipment inspection (PSI). If there is an issue with TPS2214DB, 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 TPS2214DB part is unused and in its original packaging.
Return procedure for TPS2214DB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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