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Diodes Incorporated PI74FCT162245ATKEX
- Part No.:
- PI74FCT162245ATKEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
PI74FCT162245ATKEX.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,628
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Product details
Overview
PI74FCT162245ATKEX from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver with ±24mA balanced output drivers, 5V supply operation, and 48-pin TSSOP (240-mil) package. It enables asynchronous two-way data bus communication between A- and B-side buses, controlled by independent direction (xDIR) and output enable (xOE) inputs. Used in backplane interface and high-noise industrial bus bridging where low ground bounce (<0.6V) and edge-rate control are critical.
For engineers reviewing the PI74FCT162245ATKEX datasheet, PI74FCT162245ATKEX pinout, PI74FCT162245ATKEX application, or PI74FCT162245ATKEX equivalent, key selection criteria include bidirectional flow control timing, ±24mA drive symmetry, Hi-Z disable behavior, and compatibility with 5V TTL/CMOS logic families in space-constrained TSSOP layouts.
Technical Context
This device implements dual 8-bit or unified 16-bit bidirectional data transfer using separate xDIR and xOE controls per port pair. Its current-limiting output structure eliminates external termination resistors while maintaining <0.6V typical ground bounce at VCC = 5V and TA = 25°C.
It operates across –40°C to +85°C ambient, supports 5V ±10% supply, and features hysteresis on all inputs for noise immunity. Propagation delay is 1.5–7.0 ns (A↔B), with output enable/disable times ≤9.5 ns and skew ≤0.5 ns across outputs within the same package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - ensures compatibility with standard 5V TTL/CMOS systems without level-shifting. |
| Output Drive | ±24mA balanced - provides symmetrical sourcing/sinking for reduced signal asymmetry and EMI. |
| Propagation Delay | 1.5–7.0 ns (A↔B, CL = 50pF) - enables reliable 100+ MHz bus handshaking in synchronous designs. |
| Ground Bounce | <0.6V typical at VCC = 5V - minimizes switching noise coupling into shared ground planes. |
| Input Hysteresis | 100 mV - improves noise margin against slow-rising or noisy control signals (xDIR/xOE). |
| Package | 48-pin TSSOP, 240-mil width - surface-mount footprint optimized for dense PCB layouts with thermal relief. |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature range without derating. |
Pinout & Package
Package: 48-pin plastic TSSOP (240-mil wide), lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit port group (A→B or B→A); active-HIGH logic. |
| 1OE, 2OE | Output Enable Input | Active-LOW control enabling/disabling both A and B ports simultaneously into Hi-Z state. |
| 1A0–1A7, 2A0–2A7 | Side A I/O Terminals | Bi-directional data terminals for first and second 8-bit bus segment on Side A. |
| 1B0–1B7, 2B0–2B7 | Side B I/O Terminals | Bi-directional data terminals for first and second 8-bit bus segment on Side B. |
| VCC (Pins 7, 22, 35, 46) | Power Supply | Four dedicated VCC pins reduce IR drop and improve power integrity across high-speed switching. |
| GND (Pins 4, 11, 26, 39) | Ground Reference | Four GND pins provide low-inductance return paths, critical for minimizing ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Balanced ±24mA outputs | Enables matched rise/fall times and reduces differential-mode EMI in parallel bus traces. |
| Integrated edge-rate control | Current-limiting resistors at outputs suppress overshoot/undershoot without external components. |
| Low ground bounce (<0.6V) | Preserves signal integrity in multi-load backplane environments with shared ground planes. |
| Hysteresis on all inputs | Rejects sub-100mV noise spikes on xDIR/xOE lines, preventing spurious direction or enable toggling. |
| Hi-Z disable on OE HIGH | Allows safe hot-swap of connected subsystems without bus contention or latch-up risk. |
Applications
| Industrial Backplane Interface | Legacy Bus Bridging |
|---|---|
|
Use Scenario: Interfacing 5V ISA or VMEbus peripherals with modern controller modules via passive backplane. IC Role / Device Role / Timing Role: Bidirectional level-consistent data shuttle between isolated bus segments with independent direction control per 8-bit lane. Use Value: Eliminates need for discrete termination and reduces ground bounce-induced bit errors in multi-drop configurations. |
Use Scenario: Connecting legacy 5V microcontroller-based instrumentation to newer FPGA-based acquisition systems. IC Role / Device Role / Timing Role: Synchronizing asynchronous read/write handshakes across voltage-compatible but timing-isolated domains. Use Value: ±24mA drive ensures robust signal integrity over 15 cm routed traces without added capacitance or impedance matching. |
| High-Density Data Acquisition Chassis | Automated Test Equipment (ATE) Fixture |
|
Use Scenario: Multiplexing sensor data streams from 16-channel analog front-ends to centralized ADC controllers. IC Role / Device Role / Timing Role: Time-multiplexed bidirectional data conduit supporting burst-mode transfers with minimal inter-channel skew. Use Value: 0.5 ns max output skew guarantees deterministic sampling alignment across all 16 channels. |
Use Scenario: Reconfigurable DUT interface board routing digital stimulus and response signals between tester and device-under-test. IC Role / Device Role / Timing Role: Programmable bus direction switch enabling shared test resource reuse across multiple DUT pin sets. Use Value: Hi-Z disable on xOE allows safe reconfiguration mid-test without bus contention or signal corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT162245CPAG | Same ±24mA drive, identical pinout, but TI's version uses SSOP-48 (300-mil) package - 0.6 mm wider body. | Requires PCB land pattern revision; not drop-in compatible with TSSOP-48 layout. | Select when existing design uses 300-mil SSOP footprint or TI supply chain preference applies. |
| 74ALVC162245PW | 3.3V-only operation (1.65–3.6V), lower drive (±24mA still), but higher speed (tPD = 2.5 ns typ) and smaller TSSOP-48 (6.1 mm width). | Not suitable for 5V systems; requires level translation if interfacing with legacy 5V logic. | Choose only for new 3.3V-only designs prioritizing lower power and faster propagation. |
Compared with SN74FCT162245CPAG and 74ALVC162245PW, PI74FCT162245ATKEX uniquely supports 5V operation in a compact 240-mil TSSOP, delivering balanced drive and ultra-low ground bounce without requiring voltage translation or footprint redesign.
Availability
PI74FCT162245ATKEX is available at Aetrix Electronics and suitable for industrial backplane interface, legacy bus bridging, and high-density data acquisition chassis requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PI74FCT162245ATKEX 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
Pericom Semiconductor was a fabless provider of high-speed interface and signal integrity solutions, acquired by Diodes Incorporated in 2016; its timing and logic portfolio continues under Diodes' product stewardship.
This device belongs to the PI74FCT fast CMOS logic family, engineered specifically for low-noise, high-drive 5V bus interfacing in industrial and telecom infrastructure where ground bounce and signal fidelity are design-critical.
FAQ
Is PI74FCT162245ATKEX pin-compatible with PI74FCT16245ATKEX?
No. While both are 48-pin TSSOP transceivers, PI74FCT16245ATKEX has asymmetric ±32mA/64mA drive and lacks the current-limiting resistors used in PI74FCT162245ATKEX for edge-rate control. Pin functions match, but electrical behavior differs significantly - substitution requires validation of drive strength, ground bounce, and termination requirements.
Does PI74FCT162245ATKEX support live insertion?
No. Live insertion capability is explicitly documented only for PI74FCT16245T-series devices due to their power-off disable feature. PI74FCT162245ATKEX does not implement power-down disable; its outputs go Hi-Z only when xOE is HIGH under normal VCC bias - it is not rated for hot-plug operation with VCC = 0V.
What is the maximum capacitive load this transceiver can drive reliably?
Based on characterization with CL = 50pF and RL = 500Ω, the device maintains specified tPHL/tPLH and VOL/VOH across full temperature and voltage ranges up to 50pF. Driving >75pF may increase propagation delay beyond 7.0 ns and elevate ground bounce above 0.6V, requiring empirical validation for specific PCB trace and stub loading.
Can xDIR and xOE be tied together for simplified control?
Yes, but with functional trade-offs: tying them forces simultaneous direction and enable control, eliminating independent port gating. This reduces flexibility in partial-bus isolation scenarios and may increase dynamic power during direction changes due to transient bus contention before Hi-Z activation - use only in fixed-direction, always-enabled applications.
PI74FCT162245ATKEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PI74FCT162245ATKEX FAQ
1.How can I place an order for PI74FCT162245ATKEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT162245ATKEX 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 PI74FCT162245ATKEX reliable?
The price and inventory of PI74FCT162245ATKEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT162245ATKEX is usually 5 days.
3.What payment methods are accepted for PI74FCT162245ATKEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT162245ATKEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT162245ATKEX?
PI74FCT162245ATKEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT162245ATKEX 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 PI74FCT162245ATKEX?
For technical support, including PI74FCT162245ATKEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT162245ATKEX requirements.
6.How does Aetrix verify that PI74FCT162245ATKEX is sourced from the original manufacturer or authorized distributors?
All PI74FCT162245ATKEX 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 PI74FCT162245ATKEX meets industry standards.
7.What is the process for return or replacement of PI74FCT162245ATKEX?
All PI74FCT162245ATKEX units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT162245ATKEX, 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 PI74FCT162245ATKEX part is unused and in its original packaging.
Return procedure for PI74FCT162245ATKEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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