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NXP Semiconductors 74HC652PW,118
- Part No.:
- 74HC652PW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC652PW,118.pdf
- Description:
- IC TXRX NON-INVERT 6V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
74HC652PW,118 from NXP Semiconductors (formerly Philips) is an octal bus transceiver/register with independent 3-state control for bidirectional A↔B data flow, real-time or clocked storage mode selection, and dual register capability. It operates at VCC = 2.0–6.0 V, delivers 13 ns typical propagation delay (An/Bn to Bn/An), supports up to 92 MHz clock frequency, and functions in industrial temperature range (−40°C to +125°C) for embedded bus arbitration systems.
For engineers reviewing the 74HC652PW,118 datasheet, 74HC652PW,118 pinout, 74HC652PW,118 application, or 74HC652PW,118 equivalent, key selection criteria include independent A/B clock enables (CPAB/CPBA), separate output enables (OEAB/OEBA), Schmitt-trigger clock inputs for noise immunity, and simultaneous stored-A-to-B + stored-B-to-A transfer capability not found in 74HC646.
Technical Context
The 74HC652PW,118 integrates eight non-inverting transceiver channels with D-type flip-flops per bus, enabling concurrent real-time pass-through and registered storage. Its dual-clock architecture (CPAB for A→B, CPBA for B→A) and dual-select logic (SAB/SBA) allow independent control of data source routing per direction.
Schmitt-trigger inputs on CPAB and CPBA tolerate slow-rising clock edges, while OEAB and OEBA independently disable outputs to high-impedance states-critical for multi-drop bus contention management. The device implements true bidirectional register synchronization without requiring external latches or glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-backed operation |
| tPLH/tPZL (An/Bn → Bn/An) | 13 ns typ. @ VCC = 5 V, CL = 15 pF - ensures sub-15 ns latency for time-critical bus handshaking |
| fmax | 92 MHz - enables high-throughput data exchange in legacy parallel bus architectures |
| CI | 3.5 pF - minimizes capacitive loading on driving sources and preserves signal integrity |
| CPD | 26 pF - determines dynamic power consumption: PD ≈ 26 × VCC² × fi (fi = input frequency) |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Output Type | 3-state CMOS bus driver - provides rail-to-rail swing and high fan-out capability (≥10 LSTTL loads) |
Pinout & Package
TSSOP24 package (SOT355-1), 0.65 mm pitch, body size 7.8 mm × 4.4 mm - surface-mount compatible with automated assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CPAB (1) | A-to-B clock input | Triggers storage of A-bus data into internal register for later B-bus output |
| SAB (2) | A-to-B select input | Selects real-time (SAB = L) or registered (SAB = H) A→B data path |
| OEAB (3) | A-to-B output enable | Active-Low: disables An→Bn outputs when HIGH; enables bidirectional isolation |
| A0–A7 (4–11) | A-bus I/O terminals | Bidirectional data lines shared between transceiver and register storage |
| GND (12) | Ground reference | Common return for all logic and power paths; requires low-impedance PCB plane |
| B7–B0 (13–20) | B-bus I/O terminals | Bidirectional data lines with identical electrical behavior to A-bus |
| OEBA (21) | B-to-A output enable | Independent control of B→A output state; enables asymmetric bus arbitration |
| SBA (22) | B-to-A select input | Selects real-time (SBA = L) or registered (SBA = H) B→A data path |
| CPBA (23) | B-to-A clock input | Triggers storage of B-bus data into internal register for later A-bus output |
| VCC (24) | Positive supply | Power rail for all logic and output drivers; decoupling capacitor required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous A↔B registered transfer | Enables full-duplex stored-data exchange (A→B + B→A) in one cycle-unique vs. 74HC646 |
| Independent A/B clock and select controls | Permits asymmetric timing: e.g., A-bus updated at 10 MHz while B-bus runs at 25 MHz |
| Schmitt-trigger clock inputs | Accepts slow or noisy clocks (e.g., microcontroller GPIO) without external conditioning |
| Dual 3-state enables (OEAB/OEBA) | Allows independent tri-state control per direction-essential for bus sharing and hot-swap isolation |
| Real-time + storage mode multiplexing | Eliminates need for external multiplexers when mixing live sensor data and buffered command streams |
Applications
| Industrial PLC Backplane Interface | Legacy Parallel Printer Controller |
|---|---|
Use Scenario: Isolating CPU address/data bus from modular I/O expansion slots with configurable timing. IC Role / Device Role / Timing Role: Bidirectional bus transceiver with register staging for deterministic read/write cycles across backplane traces. Use Value: Enables synchronized capture of multiple sensor inputs before forwarding to CPU-reducing interrupt latency by eliminating software polling loops. |
Use Scenario: Managing bidirectional data flow between host controller and parallel printer port with handshake signaling. IC Role / Device Role / Timing Role: Registered transceiver buffering printer status signals (BUSY, ACK) and print data with independent OE control. Use Value: Prevents bus contention during simultaneous status polling and data transmission-ensuring reliable IEEE 1284 compliance. |
| Automotive Diagnostic Interface Module | Test Equipment Bus Arbiter |
Use Scenario: Interfacing microcontroller UART peripherals to legacy K-line or ISO 9141 diagnostic buses via parallel-to-serial conversion logic. IC Role / Device Role / Timing Role: Register-based data staging element synchronizing asynchronous diagnostic commands to synchronous bus clock domains. Use Value: Guarantees bit-aligned framing of diagnostic responses-even under voltage droop or EMI-induced clock jitter-meeting ISO 15765 timing requirements. |
Use Scenario: Sharing a common test bus among multiple instrument controllers (DMM, scope, PSU) in automated test systems. IC Role / Device Role / Timing Role: Directionally isolated bus transceiver enabling master-slave arbitration with glitch-free bus turnaround. Use Value: Eliminates bus turnaround dead time through simultaneous register update-improving test throughput by ≥18% vs. discrete latch + buffer solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC646D,653 | Lacks simultaneous A↔B registered transfer; single clock input (CP); no CPBA/SBA pins | Supports only unidirectional registered transfer or real-time bidirectional mode-not full-duplex stored exchange | Choose when cost sensitivity outweighs need for concurrent A/B register updates |
| SN74LVTH16245ADGGR | 16-bit, non-registering, TTL-compatible LVCMOS; no internal storage or clock inputs | Provides higher drive strength (±24 mA) but requires external registers for storage functionality | Prefer for high-speed, non-timed bus extension where latency < 5 ns is critical and storage is handled elsewhere |
Compared with 74HC646D,653 and SN74LVTH16245ADGGR, the 74HC652PW,118 uniquely delivers integrated dual-directional register staging-reducing component count by two 8-bit DFFs and simplifying timing closure in deterministic bus architectures.
Availability
74HC652PW,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive diagnostic modules, legacy parallel printer interfaces, test equipment bus arbiters, and embedded system expansion slots requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC652PW,118 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic IC development.
The 74HC652PW,118 belongs to the HC-series high-speed CMOS logic family, designed specifically for pin-compatible replacement of LSTTL in noise-sensitive, power-constrained, and thermally demanding embedded bus systems.
FAQ
What is the maximum clock frequency supported by the 74HC652PW,118?
The 74HC652PW,118 supports a maximum clock frequency of 92 MHz under typical conditions (VCC = 5 V, Tamb = 25°C, CL = 15 pF). At extended temperature ranges (−40°C to +125°C) and VCC = 4.5 V, the guaranteed minimum fmax is 83 MHz per AC characteristics tables. This makes the 74HC652PW,118 suitable for high-speed parallel bus applications where deterministic timing is essential.
Does the 74HC652PW,118 support simultaneous data transfer from A to B and B to A using stored values?
Yes-the 74HC652PW,118 uniquely supports concurrent stored-A-to-B and stored-B-to-A transfer in a single operation, enabled when OEAB = LOW, OEBA = LOW, SAB = HIGH, and SBA = HIGH. This capability differentiates it from the 74HC646 and eliminates the need for external latches in full-duplex buffered bus designs.
What package type is used for the 74HC652PW,118?
The 74HC652PW,118 uses a TSSOP24 package (SOT355-1), with 24 leads, 0.65 mm lead pitch, and dimensions of 7.8 mm × 4.4 mm × 1.1 mm. This fine-pitch surface-mount package supports automated assembly and high-density PCB layouts while maintaining thermal performance suitable for industrial ambient conditions.
How does the Schmitt-trigger action on CPAB and CPBA improve system reliability?
The Schmitt-trigger inputs on CPAB and CPBA provide hysteresis (typically 0.8 V at VCC = 5 V), allowing the 74HC652PW,118 to reliably decode slow-rising or electrically noisy clock signals-such as those from microcontroller GPIOs or long PCB traces-without external RC filtering or dedicated clock conditioners.
Can the 74HC652PW,118 operate at 3.3 V supply voltage?
Yes-the 74HC652PW,118 is fully specified for VCC = 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, propagation delays increase moderately (e.g., tPLH ≈ 18 ns typ.), and fmax reduces to ~65 MHz, but all DC and AC parameters remain guaranteed across −40°C to +125°C, making it interoperable with mixed-voltage 3.3 V/5 V systems.
74HC652PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
74HC652PW,118 FAQ
1.How can I place an order for 74HC652PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC652PW,118 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 74HC652PW,118 reliable?
The price and inventory of 74HC652PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC652PW,118 is usually 5 days.
3.What payment methods are accepted for 74HC652PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC652PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC652PW,118?
74HC652PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC652PW,118 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 74HC652PW,118?
For technical support, including 74HC652PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC652PW,118 requirements.
6.How does Aetrix verify that 74HC652PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HC652PW,118 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 74HC652PW,118 meets industry standards.
7.What is the process for return or replacement of 74HC652PW,118?
All 74HC652PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC652PW,118, 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 74HC652PW,118 part is unused and in its original packaging.
Return procedure for 74HC652PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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