My Inquiry
My Account
Texas Instruments CD4532BE-NG
- Part No.:
- CD4532BE-NG
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
CD4532BE-NG.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CD4532BE-NG from Texas Instruments is an 8-bit priority encoder IC in a 16-pin PDIP package, operating from -55°C to +125°C with supply voltage range 3 V to 18 V. It encodes eight active-low inputs (I0–I7) into three active-high binary outputs (Y0–Y2), features enable input (EI) and group select (GS) output, and is used in industrial control panels for fault prioritization logic.
For engineers reviewing the CD4532BE-NG datasheet, CD4532BE-NG pinout, CD4532BE-NG application, or CD4532BE-NG equivalent, this page provides verified electrical specs, package dimensions, functional role in digital encoding systems, and validated alternative options for legacy CMOS logic design.
Technical Context
The CD4532BE-NG implements standard CMOS priority encoding logic: highest-order asserted input determines output code, with EI controlling functional enablement and GS indicating valid input activity. It uses static CMOS circuitry with rail-to-rail input/output swing and inherent noise immunity.
Designed for compatibility with CD4000-series logic families, it supports direct interfacing with TTL at VDD ≥ 10 V and exhibits propagation delays of 120 ns typical at 5 V and 50 pF load. Its dual-rail operation enables use in battery-powered and wide-voltage industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-line to 3-line priority encoder with enable and group select outputs |
| Supply Voltage Range | 3 V to 18 V - supports single-supply operation across battery, industrial, and legacy CMOS systems |
| Operating Temperature | -55°C to +125°C - qualified for extended industrial and military-grade environments |
| Propagation Delay | 120 ns max at VDD = 5 V, CL = 50 pF - ensures timing predictability in synchronous logic trees |
| Input Logic Level | Active-low inputs (I0–I7), active-high outputs (Y0–Y2, GS) - matches standard negative-logic control interfaces |
| Package Type | 16-pin PDIP (N) - through-hole compatible for prototyping, repair, and high-reliability board assembly |
Pinout & Package
CD4532BE-NG is supplied in a 16-lead plastic dual-in-line package (PDIP-N), 19.1 mm × 6.6 mm body size, 2.54 mm lead pitch, with standard DIP pin spacing and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I0) | Lowest-priority input | Active-low data input; lowest encoding priority when multiple inputs asserted |
| 2 (I1) | Input | Active-low input with second-lowest priority in 8-bit hierarchy |
| 3 (I2) | Input | Active-low input with third-lowest priority |
| 4 (I3) | Input | Active-low input with fourth-lowest priority |
| 5 (I4) | Input | Active-low input with fifth-lowest priority |
| 6 (I5) | Input | Active-low input with sixth-lowest priority |
| 7 (I6) | Input | Active-low input with seventh-lowest priority |
| 8 (I7) | Highest-priority input | Active-low input; overrides all lower-priority inputs when asserted |
| 9 (VSS) | Ground | CMOS reference return path for all internal logic and I/O |
| 10 (Y2) | MSB output | Most-significant bit of 3-bit binary output code (active-high) |
| 11 (Y1) | Output | Mid-significance bit of encoded output (active-high) |
| 12 (Y0) | LSB output | Least-significant bit of encoded output (active-high) |
| 13 (GS) | Group Select | Active-high output indicating at least one input (I0–I7) is asserted |
| 14 (EI) | Enable Input | Active-low control enabling encoder function; disables outputs when high |
| 15 (VDD) | Positive Supply | CMOS power rail; supports 3–18 V operation with no level-shifting required |
| 16 (NC) | No Connect | Internally unused pin; must remain unconnected per TI specification |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 3 V to 18 V operation eliminates need for external voltage translation in mixed-supply systems |
| Priority encoding logic | Deterministic output based on highest-priority asserted input - critical for fault-ranking in safety-critical hardware |
| Group Select (GS) flag | Single-pin status indicator confirms valid input activity without requiring external OR logic |
| CMOS input compatibility | High-impedance inputs draw < 1 µA - reduces loading on upstream drivers and simplifies fan-out planning |
| Extended temperature rating | -55°C to +125°C qualification enables deployment in aerospace, downhole, and under-hood automotive applications |
Applications
| Industrial Control Panel | Legacy System Upgrade |
|---|---|
|
Use Scenario: Prioritizing alarm signals from eight discrete sensors in a PLC-based machine safety system. IC Role / Device Role / Timing Role: Priority encoder mapping sensor fault codes to a 3-bit bus for microcontroller interrupt decoding. Use Value: Reduces wiring complexity by replacing eight parallel interrupt lines with three encoded bits and one GS flag line. |
Use Scenario: Replacing obsolete TTL 74LS148 encoders in aging test equipment where supply rails exceed 5 V. IC Role / Device Role / Timing Role: Drop-in CMOS-compatible encoder supporting 12 V operation without level shifters or regulator redesign. Use Value: Eliminates need for external voltage translation while maintaining identical pinout and truth-table behavior. |
| Military Communication Chassis | Automotive Diagnostic Interface |
|
Use Scenario: Encoding status flags from redundant power modules in a MIL-STD-1553B subsystem chassis. IC Role / Device Role / Timing Role: Fault-prioritization logic ensuring highest-priority module failure triggers immediate system response. Use Value: Meets -55°C to +125°C operational requirement and supports long-term reliability under thermal cycling stress. |
Use Scenario: Consolidating engine sensor fault indicators (O2, knock, MAP, TPS, etc.) into a compact diagnostic header. IC Role / Device Role / Timing Role: Hardware-level encoder feeding fault rank to CAN controller via GPIO expansion port. Use Value: Enables real-time fault ranking without CPU intervention, reducing diagnostic latency in ECU firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar priority encoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4532BM96 | SOIC-16 package, RoHS-compliant NIPDAU finish, MSL Level-1, same electrical specs | Surface-mount assembly only; requires PCB redesign from through-hole layout | Select when migrating to automated SMT production and space-constrained boards |
| CD4532BPWR | TSSOP-16 package, 1.2 mm max height, RoHS-compliant, MSL Level-1, identical logic and timing | Ultra-low profile footprint; not suitable for hand-soldering or high-vibration mechanical environments | Select for ultra-thin consumer or portable electronics where board thickness is constrained |
Compared with CD4532BE-NG, CD4532BM96 offers surface-mount compatibility without electrical trade-offs, while CD4532BPWR delivers minimal Z-height at the cost of mechanical robustness - both retain full functional equivalence but differ in physical integration requirements.
Availability
CD4532BE-NG is available at Aetrix Electronics and suitable for industrial control panels, legacy system upgrades, and military communication chassis requiring stable component supply and long-lifecycle support.
Supply support for CD4532BE-NG 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
Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and aerospace reach.
The CD4532BE-NG belongs to TI's CD4000B-series CMOS logic family, designed for high-noise-immunity, wide-voltage digital interfacing in harsh-environment applications where reliability and longevity are critical.
FAQ
What is the maximum supply voltage rating for CD4532BE-NG?
The CD4532BE-NG supports a maximum supply voltage of 18 V DC, with guaranteed operation across the full 3 V to 18 V range. This allows direct integration into systems powered by 5 V, 12 V, or 15 V rails without regulation - a key advantage over TTL-family encoders limited to 5 V. The CD4532BE-NG maintains specified timing and logic thresholds throughout this range.
Does CD4532BE-NG require external pull-up resistors on its outputs?
No, CD4532BE-NG features totem-pole CMOS outputs capable of driving both high and low logic levels actively. Its Y0–Y2 and GS outputs source/sink sufficient current (±4.2 mA at VDD = 15 V) to interface directly with CMOS or TTL inputs without external pull-ups. This simplifies board layout and reduces BOM count compared to open-collector alternatives.
Is CD4532BE-NG pin-compatible with the 74LS148 TTL encoder?
No, CD4532BE-NG is not pin-compatible with the 74LS148. While both perform 8-to-3 priority encoding, CD4532BE-NG uses active-low inputs and active-high outputs with different pin assignments (e.g., EI on pin 14 vs. EI on pin 5 for 74LS148). Direct replacement requires PCB modification and logic inversion analysis - the CD4532BE-NG is functionally equivalent but physically incompatible.
What does the 'NG' suffix indicate in CD4532BE-NG?
The 'NG' suffix in CD4532BE-NG denotes Texas Instruments' green packaging standard: lead-free (RoHS-compliant) construction with NiPdAu (NIPDAU) lead finish and halogen-free molding compound. It replaces older 'E' variants with SnPb leads, maintaining identical electrical performance and package dimensions while meeting modern environmental compliance requirements.
Can CD4532BE-NG drive a 50 pF capacitive load at 10 MHz?
No - the CD4532BE-NG is not characterized for 10 MHz operation. Its typical propagation delay is 120 ns at 5 V/50 pF, implying a maximum reliable toggle frequency below 4 MHz under those conditions. For high-speed applications, TI recommends evaluating setup/hold timing margins and derating based on actual VDD, temperature, and load; the CD4532BE-NG is optimized for robustness, not speed.
CD4532BE-NG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Priority Encoder
- Circuit:
- 1 x 8:3
- Independent Circuits:
- 1
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage Supply Source:
- Dual Supply
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
CD4532BE-NG FAQ
1.How can I place an order for CD4532BE-NG through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4532BE-NG 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 CD4532BE-NG reliable?
The price and inventory of CD4532BE-NG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4532BE-NG is usually 5 days.
3.What payment methods are accepted for CD4532BE-NG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4532BE-NG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4532BE-NG?
CD4532BE-NG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4532BE-NG 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 CD4532BE-NG?
For technical support, including CD4532BE-NG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4532BE-NG requirements.
6.How does Aetrix verify that CD4532BE-NG is sourced from the original manufacturer or authorized distributors?
All CD4532BE-NG 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 CD4532BE-NG meets industry standards.
7.What is the process for return or replacement of CD4532BE-NG?
All CD4532BE-NG units undergo pre-shipment inspection (PSI). If there is an issue with CD4532BE-NG, 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 CD4532BE-NG part is unused and in its original packaging.
Return procedure for CD4532BE-NG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CD4532BE-NG Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
