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NXP Semiconductors 74ALVCH16245DGG:51
- Part No.:
- 74ALVCH16245DGG:51
- Manufacturer:
- NXP Semiconductors
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16245DGG:51.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,506
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Product details
Overview
74ALVCH16245DGG:51 from NXP Semiconductors (formerly Philips) is a 16-bit non-inverting 3-state bus transceiver with dual direction control (1DIR/2DIR) and dual output enable (1OE/2OE), operating from 1.2 V to 3.6 V supply, featuring bushold on all data inputs, and rated for −40 °C to +85 °C industrial temperature range. It supports bidirectional data flow between two 8-bit buses or functions as a single 16-bit transceiver in high-density logic interfacing applications.
For engineers reviewing the 74ALVCH16245DGG:51 datasheet, 74ALVCH16245DGG:51 pinout, 74ALVCH16245DGG:51 application, or 74ALVCH16245DGG:51 equivalent, this device is selected for low-voltage mixed-signal bus isolation, TTL-level compatible interface translation, and noise-sensitive PCB layouts requiring minimized ground bounce via multiple VCC/GND pins and bushold input stabilization.
Technical Context
The 74ALVCH16245DGG:51 implements a CMOS-based dual-8-bit transceiver architecture with independent send/receive direction control per byte group and active-low 3-state output enables. Its bushold circuitry actively maintains unused data inputs at valid logic levels without external resistors, eliminating floating node risks in partial-bus configurations.
It delivers ±24 mA output drive at VCC = 3.0 V, supports 50 Ω transmission line driving at 85 °C, and achieves propagation delays as low as 1.0 ns (typical) at VCC = 3.3 V with 50 pF load - enabling reliable operation in high-speed digital backplanes and memory expansion interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families without level shifters |
| Propagation Delay (tPLH/tPHL) | 1.9 ns (typ) at VCC = 3.3 V, CL = 50 pF - supports >400 MHz data throughput in synchronous bus designs |
| Output Drive Current | ±24 mA at VCC = 3.0 V - sufficient to drive 50 Ω transmission lines directly, reducing need for external buffers |
| Bushold Input Circuitry | Integrated on all data I/O pins - eliminates external pull-up/down resistors, saving board space and BOM cost |
| Input Capacitance (CI) | 4.0 pF - minimizes capacitive loading on upstream drivers, preserving signal integrity in fan-out-critical paths |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded systems and automotive body electronics |
| Power Dissipation Cap. (CPD) | 29 pF per buffer (enabled), 5 pF (disabled) - enables accurate dynamic power estimation for thermal design |
Pinout & Package
TSSOP48 package (SOT362-1), plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch - optimized for high-density PCB layouts with low inductance via multiple VCC and GND pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | 1DIR / 2DIR | Active-HIGH direction control inputs - set data flow direction (A→B or B→A) for respective 8-bit groups |
| 2–12, 13–23, 26–36, 37–47 | Data I/O (1B0–1B7, 2B0–2B7, 1A0–1A7, 2A0–2A7) | Bidirectional data terminals - function as inputs or outputs depending on DIR and OE states; all feature bushold |
| 25, 48 | 2OE / 1OE | Active-LOW output enable - places corresponding 8-bit port into high-impedance state for bus isolation |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight dedicated ground pins - reduce ground bounce and improve noise immunity in high-speed switching |
| 7, 18, 31, 42 | VCC | Four dedicated supply pins - lower power supply inductance and stabilize VCC under transient loads |
Key Features
| Feature | Design Value |
|---|---|
| Dual 8-bit bus isolation | Independent 1DIR/2DIR and 1OE/2OE controls allow cascading two 8-bit buses or partitioning one 16-bit bus without contention |
| Bushold input retention | Maintains stable logic levels on unconnected or unterminated data lines - prevents metastability in hot-plug or partial-load scenarios |
| Low-inductance power delivery | Four VCC and eight GND pins minimize simultaneous switching noise (SSN) and ground bounce in dense logic arrays |
| TTL-compatible interface | Direct connection to 5 V TTL outputs permitted (VI ≤ VCC + 0.5 V) - simplifies legacy system upgrades |
| Flow-through pinout | Standardized A/B port layout (A-side left/right, B-side top/bottom) reduces PCB routing complexity and layer count |
Applications
| Industrial PLC Backplane Interface | Memory Expansion Subsystem |
|---|---|
Use Scenario: Interfacing microcontroller local bus to modular I/O cards across a 20 cm backplane with 50 Ω trace impedance. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing address/data multiplexing and isolating card-specific timing domains. Use Value: Bushold prevents floating inputs during card insertion/removal; ±24 mA drive ensures clean 50 Ω line termination at 85 °C ambient. | Use Scenario: Expanding SRAM capacity in an FPGA-based vision processing module using shared address/data bus architecture. IC Role / Device Role / Timing Role: 16-bit bus buffer enabling time-multiplexed access between FPGA fabric and parallel SRAM banks. Use Value: 1.9 ns propagation delay at 3.3 V meets 200 MHz SRAM access timing; TSSOP48 footprint fits tight FPGA carrier board spacing. |
| Automotive Body Control Module | Test Equipment Digital I/O Card |
Use Scenario: Isolating CAN controller MCU bus from sensor/actuator peripheral clusters in a 12 V vehicle electrical environment. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver translating between 3.3 V MCU logic and 5 V-compatible peripheral logic domains. Use Value: 1.2 V–3.6 V supply range accommodates low-power MCU sleep modes; −40 °C to +85 °C rating matches under-hood thermal requirements. | Use Scenario: Configurable digital stimulus/response channel in automated test equipment supporting multiple DUT voltage standards. IC Role / Device Role / Timing Role: Reconfigurable 16-bit I/O buffer enabling software-defined pin direction and bus isolation per test sequence. Use Value: Dual OE/DIR controls allow per-byte gating and direction reversal without hardware rework; 4.0 pF input capacitance preserves fast edge fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16245DGGR | TI version in same TSSOP48 package; identical 1.2–3.6 V range and bushold, but tPLH = 2.1 ns (typ) at 3.3 V/50 pF | Slightly higher propagation delay; identical industrial temp range and pinout | Select when TI supply chain preference or second-source qualification required |
| 74LVC16245APAG | IDT (now Renesas) part in TSSOP48; no bushold; 1.65–3.6 V range; IO = ±24 mA at 3.3 V; tPLH = 2.0 ns (typ) | Lacks bushold - requires external biasing for unused inputs; narrower low-voltage limit (1.65 V vs. 1.2 V) | Select only if bushold is unnecessary and 1.65 V minimum supply suffices |
Compared with SN74ALVCH16245DGGR and 74LVC16245APAG, the 74ALVCH16245DGG:51 offers the widest supply range (1.2 V), guaranteed bushold functionality, and lowest typical propagation delay (1.9 ns), making it optimal for ultra-low-voltage or high-reliability floating-input environments.
Availability
74ALVCH16245DGG:51 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, automotive body control modules, memory expansion subsystems, and test equipment digital I/O cards requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74ALVCH16245DGG:51 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
NXP Semiconductors is a global semiconductor leader delivering high-performance analog, logic, and interface solutions for automotive, industrial, and consumer applications.
The 74ALVCH16245DGG:51 belongs to NXP's advanced low-voltage CMOS logic family, designed specifically for robust, low-noise bidirectional bus interfacing in space-constrained and thermally demanding embedded systems.
FAQ
What is the minimum supply voltage supported by the 74ALVCH16245DGG:51?
The 74ALVCH16245DGG:51 operates down to 1.2 V, enabling compatibility with modern ultra-low-power microcontrollers and FPGAs that use 1.2 V core rails. This specification is confirmed in Table 6 (Recommended Operating Conditions) of the Philips/NXP datasheet Rev. 03, where "low-voltage applications" explicitly list 1.2 V as the minimum VCC.
Does the 74ALVCH16245DGG:51 include bushold circuitry, and on which pins?
Yes, the 74ALVCH16245DGG:51 includes active bushold circuitry on all data I/O pins (1A0–1A7, 2A0–2A7, 1B0–1B7, 2B0–2B7), as stated in the General Description and Features sections. This eliminates the need for external pull-up or pull-down resistors on unused or floating inputs, a key differentiator from the non-H variant 74ALVC16245.
What is the maximum output drive capability of the 74ALVCH16245DGG:51 at 3.0 V supply?
At VCC = 3.0 V, the 74ALVCH16245DGG:51 provides ±24 mA output source/sink current, as specified in the Features section and verified in Table 7 (Static Characteristics) under VOH/VOL test conditions. This allows direct driving of 50 Ω transmission lines at elevated temperatures up to 85 °C.
How many ground and supply pins does the 74ALVCH16245DGG:51 have in its TSSOP48 package?
The 74ALVCH16245DGG:51 in TSSOP48 (SOT362-1) has eight dedicated GND pins (pins 4, 10, 15, 21, 28, 34, 39, 45) and four dedicated VCC pins (pins 7, 18, 31, 42), as documented in the Pin Description table (Table 3) and Figure 5 (Pin Configuration). This layout minimizes ground bounce and improves noise immunity.
Is the 74ALVCH16245DGG:51 pin-compatible with the 74ALVC16245DGG variant?
Yes, the 74ALVCH16245DGG:51 and 74ALVC16245DGG share identical TSSOP48 pinout, package dimensions, and functional pin assignments (including DIR, OE, A/B I/O, VCC, GND), as confirmed in Table 2 (Ordering Information) and Figure 5. The only functional difference is the presence of bushold in the 'H' variant, which does not affect pin mapping or mechanical fit.
74ALVCH16245DGG:51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ALVCH16245DGG:51 FAQ
1.How can I place an order for 74ALVCH16245DGG:51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16245DGG:51 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 74ALVCH16245DGG:51 reliable?
The price and inventory of 74ALVCH16245DGG:51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16245DGG:51 is usually 5 days.
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4.How is shipping managed for 74ALVCH16245DGG:51?
74ALVCH16245DGG:51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16245DGG:51 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 74ALVCH16245DGG:51?
For technical support, including 74ALVCH16245DGG:51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16245DGG:51 requirements.
6.How does Aetrix verify that 74ALVCH16245DGG:51 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16245DGG:51 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 74ALVCH16245DGG:51 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16245DGG:51?
All 74ALVCH16245DGG:51 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16245DGG:51, 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 74ALVCH16245DGG:51 part is unused and in its original packaging.
Return procedure for 74ALVCH16245DGG:51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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