My Inquiry
My Account
NXP Semiconductors HEF4068BT,653
- Part No.:
- HEF4068BT,653
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HEF4068BT,653.pdf
- Description:
- IC GATE NAND 1CH 8-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,311
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HEF4068BT,653 from NXP Semiconductors (formerly Philips) is an 8-input NAND gate in a 14-lead SO plastic package (SOT108-1), operating across 3 V to 15 V supply, with propagation delays as low as 22 ns at 15 V and 50 pF load, fully buffered for high noise immunity-used in digital logic control, address decoding, and bus arbitration circuits.
For engineers reviewing the HEF4068BT,653 datasheet, HEF4068BT,653 pinout, HEF4068BT,653 application, or HEF4068BT,653 equivalent, key selection considerations include supply voltage range, fan-out capability, output drive strength, input threshold compatibility with HE4000B-family logic, and SO-package thermal and layout constraints.
Technical Context
The HEF4068BT,653 implements a single 8-input NAND function using LOCMOS (Low-Cost MOS) technology, with fully buffered outputs ensuring consistent switching behavior regardless of input pattern or load variation. It belongs to the HE4000B logic family, sharing AC/DC electrical specifications and pin compatibility with other members like HEF4001B and HEF4011B.
Its propagation delay scales predictably with supply voltage and capacitive load per published formulas (e.g., tPLH = 22 ns + 0.16 ns/pF × CL at VDD = 15 V), and dynamic power dissipation follows P = 7200 fi + ∑(foCL) × VDD² (µW) at 15 V, supporting deterministic timing analysis in synchronous digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 8-input NAND gate - enables compact implementation of multi-signal enable/disable or priority encoding without cascading gates. |
| Supply Voltage Range | 3 V to 15 V - supports direct interface with legacy 5 V, industrial 12 V, and low-power 3.3 V systems via level-compatible inputs. |
| Propagation Delay (VDD = 15 V) | 22–60 ns (tPLH/tPHL) - ensures sub-45 MHz maximum toggle rate under 50 pF load, suitable for medium-speed control logic. |
| Output Drive | Fully buffered outputs - eliminates pattern-dependent impedance shift, critical for stable timing in bus-driven or fan-out-heavy nodes. |
| Input Compatibility | HE4000B family DC levels - guarantees interoperability with HEF4011B, HEF4071B, and other HE4000B-series ICs without level-shifting. |
| Dynamic Power (15 V) | P = 7200 fi + ∑(foCL) × 225 µW - enables accurate power budgeting for clocked logic blocks with known toggle rates and load capacitance. |
Pinout & Package
HEF4068BT,653 is housed in a 14-lead small outline (SO) plastic package (SOT108-1), 5.3 mm wide, with standard 1.27 mm pitch and gull-wing leads compatible with reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 | NAND Inputs | Eight independent CMOS inputs accepting standard HE4000B logic thresholds; all must be HIGH for LOW output. |
| 9 | Output | Active-low NAND output, fully buffered, capable of driving ≥10 HE4000B inputs (fan-out 10) under nominal conditions. |
| 14 | VDD | Positive supply terminal - must be decoupled locally (e.g., 100 nF ceramic) due to switching current transients. |
| 7 | VSS | Ground reference - shared return path for all inputs and output; requires low-impedance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| 8-input single-gate integration | Reduces board space and interconnect count vs. cascaded dual-input NANDs, lowering propagation skew in parallel decision paths. |
| LOCMOS process technology | Delivers higher noise margins and lower static power than standard CD4000, while maintaining pinout and voltage compatibility. |
| Pattern-insensitive output impedance | Ensures consistent rise/fall times and timing predictability across all 256 input combinations - critical for glitch-free state machine control. |
| Wide VDD operating range (3–15 V) | Permits use in mixed-voltage systems without external regulators - e.g., 5 V logic controlling 12 V relay drivers via open-drain interface. |
Applications
| Industrial PLC Input Conditioning | Legacy Microprocessor Address Decoding |
|---|---|
Use Scenario: Filtering and validating multiple sensor status bits before feeding into a safety-critical latch. IC Role / Device Role / Timing Role: 8-input NAND acts as a hardware AND-NOT gate to assert fault flag only when all eight monitored channels are active. Use Value: Eliminates software polling latency and provides deterministic response within 60 ns, meeting SIL-2 timing requirements. | Use Scenario: Generating chip-select signals for memory-mapped peripherals in 8085/8080-based controllers. IC Role / Device Role / Timing Role: Combines upper address bits and control lines to produce precise decode windows for I/O port selection. Use Value: Reduces decode logic depth by 3–4 gate levels versus dual-input NAND trees, cutting total access time by ≥25 ns. |
| Automotive Body Control Module Logic | Test Equipment Signal Gating |
Use Scenario: Enabling power to lighting subsystems only when ignition, door lock, and ambient light conditions are simultaneously satisfied. IC Role / Device Role / Timing Role: Implements combinational enable logic with fail-safe default-OFF behavior via active-low output. Use Value: Provides hardware-level interlock without MCU intervention, improving ASIL-B compliance and reducing firmware complexity. | Use Scenario: Gating high-frequency test clock signals during calibration sequences to prevent spurious device activation. IC Role / Device Role / Timing Role: Serves as a synchronous enable gate synchronized to system clock edges, suppressing glitches during state transitions. Use Value: Achieves <1 ns jitter addition due to fully buffered output, preserving signal integrity in 50 MHz test environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-input NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4068BE | Same 8-input NAND function but fabricated in standard CMOS; higher propagation delay (120 ns @ 5 V, 50 pF) and narrower VDD range (3–15 V same, but degraded noise margin below 5 V). | Less suitable for 3.3 V–5 V mixed-signal interfaces where HEF4068BT,653's LOCMOS input thresholds ensure reliable switching. | Select CD4068BE only if cost is primary constraint and timing budget allows ≥2× delay margin. |
| 74HC30D,652 | 8-input NAND in high-speed CMOS; faster (19 ns @ 4.5 V, 50 pF) but limited to 2–6 V supply - no 12 V operation. | Cannot replace HEF4068BT,653 in 12 V industrial or automotive power domains without level-shifting circuitry. | Choose 74HC30D,652 only for 5 V high-speed digital systems requiring minimal propagation skew. |
Compared with CD4068BE and 74HC30D,652, the HEF4068BT,653 uniquely balances wide supply range (3–15 V), predictable delay scaling, and LOCMOS noise immunity-making it the only option for robust 8-input logic in mixed-voltage, noise-prone industrial control environments.
Availability
HEF4068BT,653 is available at Aetrix Electronics and suitable for industrial PLCs, legacy microprocessor systems, automotive body control modules, and automated test equipment requiring stable component supply and long-term obsolescence management.
Supply support for HEF4068BT,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.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering analog and logic IC development.
The HEF4068BT,653 belongs to the HE4000B LOCMOS logic family, designed specifically for cost-sensitive, noise-resilient digital control in industrial automation and legacy system upgrades where reliability across wide voltage ranges is essential.
FAQ
What is the maximum operating frequency of the HEF4068BT,653?
The HEF4068BT,653 does not specify a fixed maximum clock frequency, but its propagation delay (e.g., 22 ns at 15 V, 50 pF) supports reliable toggling up to ~45 MHz in ideal conditions. Actual usable frequency depends on load capacitance, supply voltage, and board layout - design validation requires timing analysis using the published delay formulas (e.g., tPLH = 22 ns + 0.16 ns/pF × CL).
Is the HEF4068BT,653 pin-compatible with the CD4068BE?
Yes, the HEF4068BT,653 is pin-compatible with the CD4068BE in the 14-lead DIP and SO packages - both share identical pin 1–8 (inputs), pin 9 (output), pin 14 (VDD), and pin 7 (VSS). However, differences in input threshold levels and AC performance require verification of logic thresholds and timing margins in the target system before substitution.
Does the HEF4068BT,653 support 3.3 V operation?
Yes, the HEF4068BT,653 is fully specified down to 3 V supply voltage. At 3.3 V, it maintains valid logic thresholds and functional operation, though propagation delay increases (e.g., ~195 ns typical at 3 V, 50 pF). Its LOCMOS input structure ensures reliable switching even at this minimum VDD, unlike some standard CMOS variants.
What is the fan-out capability of the HEF4068BT,653?
The HEF4068BT,653 supports a fan-out of at least 10 standard HE4000B loads under nominal conditions (VDD = 5 V, Tamb = 25 °C). This is enabled by its fully buffered output stage, which maintains stable drive strength across varying input patterns and capacitive loads - critical for driving multiple downstream logic inputs without signal degradation.
Can the HEF4068BT,653 be used in automotive applications?
Yes, the HEF4068BT,653 is qualified for automotive body electronics applications per AEC-Q100 stress testing when sourced through authorized NXP channels. Its 3–15 V operation, high noise immunity, and pattern-insensitive output make it suitable for lighting control, door module logic, and sensor conditioning - provided thermal derating and PCB layout follow NXP's SO-package guidelines.
HEF4068BT,653 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 4000B
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 8
- Features:
- -
- Voltage - Supply:
- 3V ~ 15V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 3mA, 3mA
- Input Logic Level - Low:
- 1.5V ~ 4V
- Input Logic Level - High:
- 3.5V ~ 11V
- Max Propagation Delay @ V, Max CL:
- 65ns @ 15V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
HEF4068BT,653 FAQ
1.How can I place an order for HEF4068BT,653 through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4068BT,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 HEF4068BT,653 reliable?
The price and inventory of HEF4068BT,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4068BT,653 is usually 5 days.
3.What payment methods are accepted for HEF4068BT,653?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4068BT,653 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HEF4068BT,653?
HEF4068BT,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4068BT,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 HEF4068BT,653?
For technical support, including HEF4068BT,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4068BT,653 requirements.
6.How does Aetrix verify that HEF4068BT,653 is sourced from the original manufacturer or authorized distributors?
All HEF4068BT,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 HEF4068BT,653 meets industry standards.
7.What is the process for return or replacement of HEF4068BT,653?
All HEF4068BT,653 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4068BT,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 HEF4068BT,653 part is unused and in its original packaging.
Return procedure for HEF4068BT,653:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HEF4068BT,653 Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
