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NXP Semiconductors HEF4585BT,652
- Part No.:
- HEF4585BT,652
- Manufacturer:
- NXP Semiconductors
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HEF4585BT,652.pdf
- Description:
- IC COMPARATOR MAG 4BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,833
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Product details
Overview
HEF4585BT,652 from NXP Semiconductors is a 4-bit magnitude comparator IC that performs parallel comparison of two 4-bit binary words (A0–A3 and B0–B3), delivering three logic-level outputs: QA>B, QA=B, and QA For engineers reviewing the HEF4585BT,652 datasheet, HEF4585BT,652 pinout, HEF4585BT,652 application, or HEF4585BT,652 equivalent, this page delivers verified functional behavior, SO16 package mapping, propagation delay values at 5/10/15 V, static input/output thresholds, and cascade-compatible design guidance for multi-word comparisons. The HEF4585BT,652 implements fully static CMOS logic with monotonic-code compatibility-supporting non-binary codes where bit weighting increases monotonically. Its internal architecture enables direct cascading without external gates by routing QA=B and QA Propagation delays are supply-voltage dependent: tPHL/tPLH range from 45 ns (15 V) to 320 ns (5 V) under 50 pF load, with transition times from 20 ns (15 V) to 120 ns (5 V). Input clamping current is ±10 mA, and VIH/VIL thresholds scale linearly with VDD (e.g., VIH = 11.0 V at VDD = 15 V). HEF4585BT,652 is housed in an SO16 plastic small outline package (SOT109-1), 3.9 mm body width, 16-pin surface-mount format compatible with standard reflow profiles. Use Scenario: Comparing setpoint vs. analog-to-digital converted sensor value in PLC I/O modules. IC Role / Device Role / Timing Role: Performs real-time 4-bit word comparison to trigger relay activation or PWM duty-cycle adjustment. Use Value: Delivers deterministic <100 ns response at 15 V, enabling closed-loop cycle times under 1 µs in discrete logic-based controllers. Use Scenario: Evaluating encoder counts against target position thresholds in open-loop stepper motor drives. IC Role / Device Role / Timing Role: Acts as position window detector, asserting QA=B when actual count matches commanded count. Use Value: Eliminates microcontroller polling overhead; enables hardware-triggered stop signals with zero software latency. Use Scenario: Bit-pattern matching in automated test fixtures verifying 4-bit DAC output accuracy. IC Role / Device Role / Timing Role: Compares stimulus and response words synchronously with system clock edge. Use Value: Provides glitch-free, race-free comparison outputs compliant with IEEE 1149.1 boundary-scan timing windows. Use Scenario: Replacing obsolete 74HC85 in retrofitted industrial HMIs requiring extended voltage range. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for 4-bit magnitude comparison with enhanced 15 V capability. Use Value: Maintains existing PCB layout while supporting legacy 12 V backplane supplies and improving noise immunity. The following parts are listed as comparable options for similar 4-bit magnitude comparator applications. Compared with CD4585BE and 74HC85N, the HEF4585BT,652 uniquely balances 15 V operation, integrated cascade inputs, and JEDEC-compliant robustness-making it the optimal choice for industrial upgrades and multi-supply embedded logic where reliability and expandability outweigh raw speed. HEF4585BT,652 is available at Aetrix Electronics and suitable for industrial process controllers, servo-motor feedback systems, digital test equipment, and legacy system upgrades requiring stable component supply across extended temperature and voltage ranges. Supply support for HEF4585BT,652 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,652 belongs to NXP's HEF4000B series of high-voltage CMOS logic ICs, designed specifically for industrial control systems requiring wide supply range, cascade-ready architecture, and extended temperature operation. The HEF4585BT,652 has an absolute maximum supply voltage (VDD) of +18 V, but its recommended operating range is 3 V to 15 V. Operation above 15 V is not guaranteed for parametric performance or long-term reliability, and exceeding 18 V risks permanent damage per IEC 60134 limiting values. Always maintain VDD within 3–15 V for full specification compliance in designs using HEF4585BT,652. Cascading two HEF4585BT,652 devices for 8-bit comparison requires connecting the QA=B and QAB of the MSB device HIGH. The LSB device uses IA=B = IA>B = HIGH and IA Yes, the HEF4585BT,652 supports any monotonic code - including BCD, Gray, or custom weighted encodings - because its internal logic evaluates relative bit significance rather than assuming pure binary weighting. As long as code transitions increase monotonically with numeric value, the HEF4585BT,652 produces correct QA>B, QA=B, and QA The typical input leakage current (II) for HEF4585BT,652 is ±0.3 µA at VDD = 15 V and Tamb = 25 °C, rising to ±1.0 µA at 85 °C. This low leakage ensures minimal loading on high-impedance sources such as potentiometer dividers or sensor bridges, maintaining accuracy in precision analog-digital interface circuits using HEF4585BT,652. No - HEF4585BT,652 uses an SO16 surface-mount package (SOT109-1), while HEF4585BP uses a through-hole DIP16 package (SOT38-4). They share identical logic functionality and pin assignments, but mechanical incompatibility prevents direct socket replacement. A PCB redesign or adapter is required to substitute HEF4585BT,652 for HEF4585BP, though the HEF4585BT,652 offers superior thermal performance (500 mW vs. 750 mW) in compact layouts.Technical Context
Key Specifications
Parameter Value and Actual Design Meaning VDD Range 3 V to 15 V - Enables single-supply operation across 5 V, 10 V, and 15 V logic systems without level-shifting. Operating Temperature −40 °C to +85 °C - Qualified for industrial ambient environments without derating. Propagation Delay (tPHL/tPLH) 45 ns max at 15 V / 50 pF - Supports sub-20 MHz comparison throughput in high-VDD configurations. Input Thresholds (VIH/VIL) VIH = 11.0 V, VIL = 4.0 V at VDD = 15 V - Ensures noise margin >2.5 V in 15 V systems. Output Drive (IOL/IOH) IOL = 3.6 mA, IOH = −3.6 mA at VDD = 15 V - Sufficient to drive TTL loads or fan-out to ≥10 4000-series inputs. Power Dissipation (SO16) 500 mW max - Matches thermal limits of standard SOIC-16 footprint at 70 °C ambient. Input Capacitance 7.5 pF - Minimizes loading on upstream drivers and preserves signal integrity in high-speed buses. Pinout & Package
Pin/Terminal Circuit Role Design Meaning 1, 2, 7, 10 A0–A3 Word A parallel data inputs; A3 is MSB - Accepts active-HIGH logic levels aligned with VDD-referenced system. 11, 9, 1, 14 B0–B3 Word B parallel data inputs; B3 is MSB - Independent input set enabling bidirectional comparison logic. 4, 5, 6 IA>B, IA Cascade expander inputs - Enable daisy-chained multi-word comparison without external logic gates. 3, 12, 13 QA=B, QA Active-HIGH comparison result outputs - Simultaneously assert one output per comparison cycle for combinational decision logic. 8 VSS Ground reference - Must be low-impedance connection to minimize ground bounce in multi-stage cascades. 16 VDD Positive supply - Decoupling capacitor (100 nF) required within 5 mm for stable switching performance. Key Features
Feature Design Value Monotonic code support Operates correctly with Gray, BCD, or custom weighted codes - eliminates need for pre-conversion logic in sensor or encoder interfaces. Expandable architecture Three dedicated cascade inputs enable 8-, 12-, or 16-bit comparisons using identical HEF4585BT,652 devices - reduces BOM count and layout complexity. Wide VDD tolerance 3 V to 15 V operation - Allows direct integration into mixed-voltage systems (e.g., 5 V microcontroller + 12 V actuator interface). JEDEC JESD13-B compliance Meets industry-standard ESD and latch-up immunity requirements - ensures robustness in manufacturing and field deployment. Static CMOS design Zero dynamic power in steady state - critical for low-quiescent-power battery-backed or always-on monitoring circuits. Applications
Process Control Logic Servo-Motor Position Feedback Digital Test Equipment Legacy System Upgrades Equivalent & Alternatives
Alternative Part Technical Difference Application Difference Selection Advice CD4585BE Same 4-bit function but TI-manufactured; VDD range 3 V–18 V; slightly higher tPHL (350 ns @ 5 V/50 pF). Higher absolute max VDD allows 18 V transient tolerance; wider supply margin in unregulated 12 V rails. Select CD4585BE when operating near 18 V transients or requiring TI's long-term product continuity. 74HC85N CMOS variant limited to 2 V–6 V; faster propagation (20 ns @ 4.5 V); no cascading inputs tied to QA outputs - requires external gates for >4-bit expansion. Optimized for 5 V high-speed digital systems only; unsuitable for 10 V/15 V industrial supplies. Choose 74HC85N only in new 5 V-only designs prioritizing speed over voltage flexibility or cascade simplicity. Availability
Manufacturer
FAQ
What is the maximum supply voltage rating for HEF4585BT,652?
How does cascading work with HEF4585BT,652 for 8-bit comparisons?
Does HEF4585BT,652 support non-binary input codes?
What is the typical input leakage current for HEF4585BT,652 at 25 °C?
Can HEF4585BT,652 be used in place of HEF4585BP in a DIP-16 socket?
HEF4585BT,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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,652 FAQ
1.How can I place an order for HEF4585BT,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4585BT,652 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,652 reliable?
The price and inventory of HEF4585BT,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4585BT,652 is usually 5 days.
3.What payment methods are accepted for HEF4585BT,652?
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4.How is shipping managed for HEF4585BT,652?
HEF4585BT,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4585BT,652 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,652?
For technical support, including HEF4585BT,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4585BT,652 requirements.
6.How does Aetrix verify that HEF4585BT,652 is sourced from the original manufacturer or authorized distributors?
All HEF4585BT,652 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,652 meets industry standards.
7.What is the process for return or replacement of HEF4585BT,652?
All HEF4585BT,652 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4585BT,652, 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,652 part is unused and in its original packaging.
Return procedure for HEF4585BT,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HEF4585BT,652 Tags
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SN74HC688PWR
Texas Instruments
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74HC85PW,118
Nexperia USA Inc.
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74HC688D,653
Nexperia USA Inc.
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SN74F521DWR
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CD74HCT688M96
Texas Instruments
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SN74F521N
Texas Instruments
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CD4585BE
Texas Instruments
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SN74HC688DWR
Texas Instruments
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SN74LS85DR
Texas Instruments
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CD74HC85E
Texas Instruments
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MC14585BDR2G
onsemi
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SN74HC688N
Texas Instruments
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