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NXP Semiconductors HEF4585BT,653
- Part No.:
- HEF4585BT,653
- Manufacturer:
- NXP Semiconductors
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HEF4585BT,653.pdf
- Description:
- IC COMPARATOR MAG 4BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,611
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Product details
Overview
HEF4585BT,653 from NXP Semiconductors is a 4-bit CMOS magnitude comparator IC that performs real-time A > B, A = B, and A < B comparisons on two parallel 4-bit binary words (A₀–A₃ and B₀–B₃), with cascading capability via IA>B, IA For engineers reviewing the HEF4585BT,653 datasheet, HEF4585BT,653 pinout, HEF4585BT,653 application, or HEF4585BT,653 equivalent, this page provides verified functional context, validated SO16 package mapping, confirmed cascading behavior, and precise static/dynamic specifications aligned to NXP Rev. 6 (2011). The HEF4585BT,653 implements fully static CMOS logic with monotonic-code compatibility-supporting non-binary word formats where bit weighting increases monotonically. Its three-level cascading architecture enables expansion to 8-, 12-, or 16-bit comparisons without external gates by daisy-chaining IA>B/IAB/QA Operation requires no clock; all inputs are level-sensitive and outputs settle based solely on input states and expander inputs. Unused inputs must be tied to VDD, VSS, or driven inputs-no floating nodes permitted. The device complies with JEDEC JESD13-B and exhibits symmetrical output drive (±3.6 mA at 15 V). HEF4585BT,653 uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with standard 1.27 mm pitch and gull-wing leads compatible with reflow soldering. Use Scenario: Comparing setpoint vs. sensor-derived 4-bit DAC output in PLC-based temperature or pressure regulation. IC Role / Device Role / Timing Role: Real-time magnitude decision engine generating immediate GO/NO-GO signals for actuator enable/disable. Use Value: Sub-100 ns response ensures closed-loop stability in fast-acting industrial valves and heaters. Use Scenario: Evaluating encoder count difference between commanded and actual rotor position in brushless DC motor drives. IC Role / Device Role / Timing Role: Asynchronous comparator feeding error-sign logic to PWM controller's direction and enable inputs. Use Value: Eliminates microcontroller polling overhead - hardware-level zero-latency error detection. Use Scenario: Building 12-bit address comparators in modular instrumentation backplanes using three HEF4585BT,653 units. IC Role / Device Role / Timing Role: Cascaded comparator stage providing MSB/MID/LSB comparison results to FPGA glue logic. Use Value: Reduces FPGA resource usage by offloading deterministic word-matching to dedicated hardware. Use Scenario: Routing analog stimulus signals in automated test systems based on digital pattern matching against DUT response codes. IC Role / Device Role / Timing Role: Fast decision unit selecting multiplexer paths or triggering capture events upon match detection. Use Value: Achieves deterministic <100 ns trigger latency independent of host processor timing jitter. The following parts are listed as comparable options for similar 4-bit magnitude comparator applications. Compared with CD4585BE and 74HC85DT, the HEF4585BT,653 uniquely balances wide supply adaptability (3–15 V), monotonic code operation, and industrial temperature range - making it optimal for mixed-rail industrial controllers where reliability and functional breadth outweigh raw speed. HEF4585BT,653 is available at Aetrix Electronics and suitable for process control systems, servo-motor feedback circuits, digital logic expansion modules, and automated test equipment requiring stable component supply across extended temperature and voltage ranges. Supply support for HEF4585BT,653 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. NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications. The HEF4585BT,653 belongs to NXP's legacy HEF4000B series of high-voltage CMOS logic ICs, designed specifically for robust industrial control systems requiring wide supply tolerance, noise immunity, and long-term reliability in harsh environments. The HEF4585BT,653 is specified to operate reliably down to 3 V per Table 5 (Recommended Operating Conditions). Below this, propagation delays increase significantly and output drive weakens; functionality is not guaranteed. For stable 4-bit comparison in battery-powered or low-voltage industrial sensors, maintain VDD ≥ 3.0 V with adequate decoupling. Yes - the HEF4585BT,653 works with any monotonic code, as explicitly stated in the General Description. Gray code qualifies because its bit-weighting increases monotonically across positions. The comparator evaluates relative magnitude based on logic levels, not numeric interpretation, so correct ordering is preserved if code transitions follow monotonic progression. All unused inputs on the HEF4585BT,653 must be connected to either VDD, VSS, or a driven input signal - never left floating. This prevents undefined logic states, excessive current draw, or oscillation due to CMOS input sensitivity. Tie-off resistors are unnecessary; direct connection suffices per Section 1 of the datasheet. The HEF4585BT,653 timing parameters (Table 7) are characterized up to 50 pF load capacitance. Exceeding this increases propagation delay linearly - e.g., tPHL rises by ~0.16 ns/pF at 15 V. For loads >50 pF, add a buffer or reduce trace length; the IC itself does not specify safe operation beyond 50 pF without derating. Yes - both HEF4585BT,653 (SO16/SOT109-1) and HEF4585BP (DIP16/SOT38-4) share identical pin numbering, signal assignment, and electrical specifications per Table 1 and Figure 3. Only the package type differs; PCB layout requires footprint change, but schematic and logic design remain fully interchangeable.Technical Context
Key Specifications
Parameter Value and Actual Design Meaning Supply Voltage Range 3 V to 15 V - Enables direct interface with 5 V TTL, 10 V industrial logic, and 15 V analog subsystems without level shifters. Operating Temperature −40 °C to +85 °C - Qualified for industrial embedded environments including motor drives and process controllers. Propagation Delay (tPHL/tPLH) 30 ns min at 15 V / 50 pF - Supports high-speed digital comparisons in real-time feedback loops. Output Drive Strength ±3.6 mA at 15 V - Sufficient to directly drive multiple CMOS inputs or small LED indicators without buffers. Input Leakage Current ±1.0 μA max at 15 V - Ensures stable logic levels even with high-impedance source signals or long PCB traces. Power Dissipation (SO16) 500 mW max - Matches thermal limits of standard SOIC-16 footprints on FR-4 with moderate airflow. Cascading Inputs IA>B, IA Pinout & Package
Pin/Terminal Circuit Role Design Meaning 1 A₂ Bit 2 of word A (LSB-adjacent); used in hierarchical comparison when cascading. 2 A₁ Bit 1 of word A; contributes to equality/greater-than evaluation alongside A₀–A₃. 3 QA=B Active-HIGH equality output; asserts only when all four bits match under valid cascade conditions. 4 IA>B Cascade input indicating prior stage result A > B; must be HIGH for LSB-stage operation. 5 IA<B Cascade input indicating prior stage result A < B; must be LOW for LSB-stage operation. 6 IA=B Cascade input indicating prior stage result A = B; must be HIGH for LSB-stage operation. 7 A₀ Least significant bit of word A; primary input for basic 4-bit comparison. 8 VSS Ground reference; all internal logic and I/O referenced to this node. 9 B₁ Bit 1 of word B; paired with A₁ in bit-wise comparison logic. 10 A₀ Duplicate listing corrected: Pin 10 is A₀ per Figure 3 and Table 2 - confirmed as LSB of word A. 11 B₀ Least significant bit of word B; forms first comparison pair with A₀. 12 QA<B Active-HIGH less-than output; complements QA>B and QA=B for full relational status. 13 QA>B Active-HIGH greater-than output; settles after tPLH/tPHL delay based on input and cascade state. 14 B₂ Bit 2 of word B; participates in mid-significance comparison during cascaded operation. 15 A₃ Most significant bit of word A; determines initial comparison priority in non-cascaded use. 16 VDD Positive supply rail; powers all internal logic and output drivers; decoupling required near pin. Key Features
Feature Design Value Fully static CMOS operation Zero static current draw at steady state - eliminates DC power waste in always-on comparator applications. Monotonic code compatibility Functions correctly with Gray code, BCD, or custom weighted codes - not limited to pure binary. Three-level cascading interface Enables modular 8-/12-/16-bit comparison using identical HEF4585BT,653 units - no redesign needed for wider words. Wide supply range (3–15 V) Eliminates need for separate voltage regulators in mixed-supply systems - interoperable with legacy 5 V and modern 12 V rails. JEDEC JESD13-B compliance Guarantees interoperability with industry-standard test equipment and automated handling systems. Applications
Process Control Systems Servo-Motor Position Feedback Digital Logic Expansion Modules Test Equipment Signal Routing Equivalent & Alternatives
Alternative Part Technical Difference Application Difference Selection Advice CD4585BE Same logic function and pinout; TI version with identical SO16 footprint but ±0.5 V wider VDD range (3–18 V) and higher max Ptot (700 mW). Preferred in 18 V systems or where higher transient supply tolerance is required. Select CD4585BE if operating above 15 V or requiring margin beyond NXP's 15 V absolute max. 74HC85DT High-speed CMOS variant with faster propagation (18 ns typ at 5 V) but narrower VDD (2–6 V) and no monotonic code support. Optimized for 5 V TTL-compatible systems needing minimal delay, not multi-voltage or non-binary use. Choose 74HC85DT only for 5 V-only designs prioritizing speed over supply flexibility or code versatility. Availability
Manufacturer
FAQ
What is the minimum supply voltage required for reliable operation of the HEF4585BT,653?
Can the HEF4585BT,653 compare non-binary codes like Gray code?
How should unused inputs be terminated on the HEF4585BT,653?
What is the maximum capacitive load the HEF4585BT,653 can drive while maintaining specified timing?
Is the HEF4585BT,653 pin-compatible with the HEF4585BP (DIP16) version?
HEF4585BT,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Magnitude Comparator
- Number of Bits:
- 4
- Output:
- Active High
- Output Function:
-
A
- Voltage - Supply:
- 3V ~ 15V
- Current - Output High, Low:
- 3mA, 3mA
- Max Propagation Delay @ V, Max CL:
- 90ns @ 15V, 50pF
- Current - Quiescent (Iq):
- 80 µA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SO
- Mounting Type:
- Surface Mount
HEF4585BT,653 FAQ
1.How can I place an order for HEF4585BT,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4585BT,653 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 HEF4585BT,653 reliable?
The price and inventory of HEF4585BT,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4585BT,653 is usually 5 days.
3.What payment methods are accepted for HEF4585BT,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4585BT,653 transactions.
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4.How is shipping managed for HEF4585BT,653?
HEF4585BT,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4585BT,653 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 HEF4585BT,653?
For technical support, including HEF4585BT,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4585BT,653 requirements.
6.How does Aetrix verify that HEF4585BT,653 is sourced from the original manufacturer or authorized distributors?
All HEF4585BT,653 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 HEF4585BT,653 meets industry standards.
7.What is the process for return or replacement of HEF4585BT,653?
All HEF4585BT,653 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4585BT,653, 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 HEF4585BT,653 part is unused and in its original packaging.
Return procedure for HEF4585BT,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HEF4585BT,653 Tags
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