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Texas Instruments 74CBT16210DGGRE4
- Part No.:
- 74CBT16210DGGRE4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74CBT16210DGGRE4.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,404
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Product details
Overview
74CBT16210DGGRE4 from Texas Instruments is a 20-bit FET bus switch IC in TSSOP-48 package, featuring dual 10-bit independent switching paths, 5 Ω typical on-state resistance (ron), TTL-compatible control inputs, and propagation delay as low as 0.25 ns at VCC = 5 V. It enables high-speed bidirectional data routing in memory expansion and processor interconnect applications.
For engineers reviewing the 74CBT16210DGGRE4 datasheet, 74CBT16210DGGRE4 pinout, 74CBT16210DGGRE4 application, or 74CBT16210DGGRE4 equivalent, this device supports fast, low-distortion signal pass-through with minimal loading, high-impedance isolation when disabled, and operation across –40°C to 85°C industrial temperature range.
Technical Context
The 74CBT16210DGGRE4 implements two independent 10-bit FET-based analog switches controlled by separate OE inputs, allowing flexible partitioning into two 10-bit buses or one unified 20-bit path. Each switch exhibits symmetrical A↔B conduction with no directionality or voltage polarity constraints.
Its CMOS-driven FET architecture delivers rail-to-rail analog signal handling, sub-nanosecond propagation delay, and low input/output capacitance (Ci = 4.5 pF, Cio(OFF) = 5.5 pF), making it suitable for high-frequency digital bus isolation without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-state resistance (ron) | 5 Ω typical - ensures minimal voltage drop and signal attenuation during active switching. |
| Propagation delay (tpd) | 0.25 ns at VCC = 5 V - enables timing-critical high-speed bus gating without skew accumulation. |
| Supply voltage (VCC) | 4 V to 5.5 V - compatible with 5-V TTL and mixed-voltage system interfaces. |
| Input capacitance (Ci) | 4.5 pF - reduces capacitive loading on upstream drivers and preserves edge rates. |
| Off-state capacitance (Cio) | 5.5 pF - minimizes crosstalk and coupling between isolated bus segments. |
| Operating temperature | –40°C to +85°C - supports deployment in industrial-grade embedded and computing systems. |
| Control logic compatibility | TTL-level (VIH = 2 V, VIL = 0.8 V) - directly interfaces with legacy 5-V microcontrollers and FPGAs without level-shifting. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, lead-free NiPdAu finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Input port A (Group 1 & 2) | Primary signal source terminals for each 10-bit switch channel. |
| 1B1–1B10, 2B1–2B10 | Output port B (Group 1 & 2) | Pass-through output terminals; electrically identical to A-side under enable. |
| 1OE, 2OE | Output-enable control inputs | Active-low enables respective 10-bit switch; high disables with high-Z isolation. |
| VCC | Power supply | Single 4–5.5 V supply powers all internal FETs and logic; no separate bias required. |
| GND (Pins 8, 17, 35, 44) | Ground reference | Four dedicated ground pins reduce ground bounce and improve noise immunity. |
| NC (Pins 1, 48) | No internal connection | Unbonded pads; must remain unconnected per TI mechanical drawing DGG0048A. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 10-bit switching | Enables selective isolation of two subsystems (e.g., CPU ↔ memory and I/O ↔ peripheral) using separate OE controls. |
| 5 Ω low on-resistance | Maintains signal integrity for 5-V TTL signals up to 128 mA per channel without significant IR drop. |
| Sub-nanosecond propagation delay | Preserves timing margins in >1 GHz clock domains where bus gating must avoid cycle penalty. |
| TTL-compatible control inputs | Eliminates need for external level shifters when driven by standard 5-V logic families. |
| High off-state impedance | Ensures <1 µA leakage between ports during disable, preventing unintended signal coupling in shared-bus architectures. |
Applications
| Memory Expansion Interface | Processor Local Bus Isolation |
|---|---|
Use Scenario: Adding SRAM or Flash memory to a microcontroller with limited address/data lines. IC Role / Device Role / Timing Role: Bidirectional 20-bit bus switch that routes address/data/control signals between MCU and external memory banks. Use Value: Enables dynamic memory bank selection without bus contention, leveraging independent OE control for seamless handoff. |
Use Scenario: Isolating legacy ISA or PCI-like parallel buses between host processor and add-in cards. IC Role / Device Role / Timing Role: High-speed transparent gate that inserts zero-cycle latency while blocking noise and reflections during idle periods. Use Value: Prevents signal degradation from unterminated stubs and allows hot-swap readiness via OE-controlled disconnection. |
| Test Access Multiplexer | Legacy Peripheral Interfacing |
Use Scenario: Sharing JTAG or boundary-scan test access across multiple ASICs on a single board. IC Role / Device Role / Timing Role: Low-capacitance, low-resistance analog switch enabling clean TCK/TMS/TDO signal routing without added jitter. Use Value: Maintains IEEE 1149.1 timing compliance due to sub-ns tpd and <6 pF off-capacitance. |
Use Scenario: Connecting modern FPGA I/O banks to legacy 5-V peripherals (e.g., UARTs, LCD controllers). IC Role / Device Role / Timing Role: Voltage-transparent bus gate that passes full 0–5 V swing without clamping or distortion. Use Value: Avoids level-shifter complexity while preserving rise/fall times critical for asynchronous handshake protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBTD16210DGGR | Includes power-down (Ioff) protection and higher VCC max (7 V); ron = 6 Ω typical. | Required in systems with live-insertion or partial-power-down scenarios where back-drive current must be blocked. | Select when Ioff protection is mandatory; otherwise 74CBT16210DGGRE4 offers lower cost and identical speed. |
| 74LVC244APW,118 | Octal buffer (not switch); 3-state outputs, 3.3-V only, no analog pass-through capability. | Suitable only for unidirectional, voltage-level-shifted driving-not for bidirectional bus sharing or analog signal routing. | Use only if directionality is fixed and voltage translation (3.3 V ↔ 5 V) is needed; not a functional replacement. |
Compared with SN74CBTD16210DGGR, the 74CBT16210DGGRE4 lacks Ioff but delivers marginally faster tpd and lower ron; compared with 74LVC244APW,118, it provides true bidirectional analog switching rather than digital buffering-making it irreplaceable in shared-bus arbitration and memory-mapped I/O contexts.
Availability
74CBT16210DGGRE4 is available at Aetrix Electronics and suitable for memory expansion, processor bus isolation, test access multiplexing, and legacy peripheral interfacing requiring stable component supply and industrial-temperature operation.
Supply support for 74CBT16210DGGRE4 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 industrial, automotive, and communications markets.
The 74CBT16210DGGRE4 belongs to TI's Widebus™ family of high-speed bus switches, designed specifically for low-latency, low-distortion signal routing in 5-V digital systems where timing integrity and bus contention avoidance are critical.
FAQ
What is the maximum continuous current rating per channel for the 74CBT16210DGGRE4?
The 74CBT16210DGGRE4 supports a continuous channel current of 128 mA per switch path, as specified in its absolute maximum ratings. This rating applies under recommended operating conditions (VCC = 4–5.5 V, TA = –40°C to 85°C) and ensures reliable conduction without thermal runaway or parametric shift. Exceeding this current may degrade on-resistance stability or accelerate wear-out.
Does the 74CBT16210DGGRE4 support hot-swapping or live insertion?
The 74CBT16210DGGRE4 does not include Ioff (power-off protection) circuitry, so it is not rated for hot-swapping. If VCC is removed while signals remain present on A or B ports, back-drive current may exceed ±10 mA and violate absolute maximum input clamp ratings. For live-insertion applications, TI recommends SN74CBTD16210DGGR instead.
Can the 74CBT16210DGGRE4 be used with 3.3-V logic levels?
The 74CBT16210DGGRE4 requires VCC = 4–5.5 V and is not guaranteed to operate correctly with 3.3-V supply. Its TTL-compatible inputs (VIH = 2 V min) accept 3.3-V logic highs, but output swing is rail-to-rail relative to VCC - so driving a 3.3-V receiver directly risks overvoltage. A level-shifter or series resistor is required for safe interfacing.
How many ground pins does the 74CBT16210DGGRE4 have, and why are they important?
The 74CBT16210DGGRE4 has four dedicated GND pins (Pins 8, 17, 35, and 44) distributed across the TSSOP-48 package. These minimize ground loop inductance and reduce simultaneous switching noise (SSN), which is critical for maintaining signal fidelity in high-speed 20-bit bus applications where return-current paths must be low-impedance and well-distributed.
Is the 74CBT16210DGGRE4 RoHS compliant and lead-free?
Yes, the 74CBT16210DGGRE4 is RoHS compliant and features a lead-free NiPdAu (nickel-palladium-gold) lead finish, as confirmed in TI's Package Option Addendum. It meets JEDEC Level-1 moisture sensitivity requirements and supports standard Pb-free reflow profiles up to 260°C peak temperature.
74CBT16210DGGRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74CBT16210DGGRE4 FAQ
1.How can I place an order for 74CBT16210DGGRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74CBT16210DGGRE4 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 74CBT16210DGGRE4 reliable?
The price and inventory of 74CBT16210DGGRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74CBT16210DGGRE4 is usually 5 days.
3.What payment methods are accepted for 74CBT16210DGGRE4?
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74CBT16210DGGRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74CBT16210DGGRE4 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 74CBT16210DGGRE4?
For technical support, including 74CBT16210DGGRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74CBT16210DGGRE4 requirements.
6.How does Aetrix verify that 74CBT16210DGGRE4 is sourced from the original manufacturer or authorized distributors?
All 74CBT16210DGGRE4 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 74CBT16210DGGRE4 meets industry standards.
7.What is the process for return or replacement of 74CBT16210DGGRE4?
All 74CBT16210DGGRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74CBT16210DGGRE4, 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 74CBT16210DGGRE4 part is unused and in its original packaging.
Return procedure for 74CBT16210DGGRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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