My Inquiry
My Account
Nexperia USA Inc. 74HC245BQ-Q100X
- Part No.:
- 74HC245BQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74HC245BQ-Q100X.pdf
- Description:
- IC TXRX NON-INVERT 6V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HC245BQ-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified octal 3-state bidirectional bus transceiver in DHVQFN20 package, operating from 2.0 V to 6.0 V supply, featuring direction control (DIR), active-low output enable (OE), and CMOS-level inputs. It enables high-noise-immunity data transfer between two 8-bit buses in automotive body control modules, infotainment interconnects, and ADAS sensor interface subsystems.
For engineers reviewing the 74HC245BQ-Q100 datasheet, 74HC245BQ-Q100 pinout, 74HC245BQ-Q100 application, or 74HC245BQ-Q100 equivalent, key selection criteria include its -40 °C to +125 °C automotive temperature range, 7 ns propagation delay at VCC = 6.0 V, 30 pF power dissipation capacitance, and DHVQFN20 package with side-wettable flanks for AOI-compatible solder joint inspection.
Technical Context
The device implements a non-inverting 8-bit bidirectional data path controlled by DIR and OE signals: DIR selects data flow direction (A→B or B→A), while OE (active LOW) places all outputs in high-impedance state. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
Static performance includes VIH = 4.2 V (min) and VIL = 1.8 V (max) at VCC = 6.0 V for 74HC variant, VOH = 5.48 V (min) at IO = −7.8 mA, and VOL = 0.26 V (max) at IO = 7.8 mA. Dynamic behavior is characterized by tpd = 7–15 ns (VCC = 6.0 V), ten = 9–26 ns, and tdis = 12–38 ns across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-supplied automotive domains. |
| Propagation Delay | 7 ns (typ) at VCC = 6.0 V - enables reliable 70+ MHz bus operation with 15 pF load. |
| Output Drive | ±7.8 mA (min) - sufficient to drive standard CMOS loads and moderate PCB trace capacitance. |
| Input Clamping | Clamp diodes on all inputs - permits safe overvoltage tolerance up to VCC + 0.5 V with external current limiting. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets automotive robustness requirements per JS-001/JS-002. |
| Operating Temp | -40 °C to +125 °C - qualified for engine bay and powertrain-adjacent locations per AEC-Q100 Grade 1. |
| Power Dissipation Cap | 30 pF - used to calculate dynamic power: PD = CPD × VCC² × fi × N. |
Pinout & Package
DHVQFN20 package (SOT764-1), 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for automated optical inspection of solder joints; thermal-enhanced construction supports sustained operation at full temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: HIGH enables B→A data flow; LOW enables A→B. |
| 2–9 | A0–A7 | Port A bidirectional data terminals - connect to microcontroller or ASIC data bus. |
| 10 | GND | Ground reference (0 V); thermal pad underneath is electrically isolated unless connected to GND. |
| 11–18 | B0–B7 | Port B bidirectional data terminals - interface to peripheral bus, memory, or sensor cluster. |
| 19 | OE | Active-low output enable: LOW activates transceiver; HIGH forces all outputs to high-impedance. |
| 20 | VCC | Positive supply rail - decoupling capacitor required within 5 mm for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including lifetime reliability testing. |
| DHVQFN20 with side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray, reducing manufacturing defect escape. |
| CMOS-level input compatibility | VIH/VIL thresholds track VCC (e.g., VIH ≥ 0.7×VCC), ensuring interoperability with diverse logic families. |
| Non-inverting 3-state architecture | Preserves signal polarity during bidirectional transfer and eliminates bus contention when OE is HIGH. |
| Input clamp diode protection | Allows safe interface to external signals up to VCC + 0.5 V using series current-limiting resistors. |
Applications
| Body Control Module (BCM) Bus Isolation | Infotainment SoC-to-Peripheral Interface |
|---|---|
|
Use Scenario: Isolating CAN/LIN gateway MCU from 12 V-powered lighting and door actuator buses. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver enabling voltage-domain separation and fault containment. Use Value: Prevents latch-up during load-dump transients and allows independent reset sequencing of subsystems. |
Use Scenario: Connecting application processor data bus to HDMI transmitter, audio codec, and display controller. IC Role / Device Role / Timing Role: Octal bus buffer with 3-state control for time-multiplexed peripheral access. Use Value: Reduces PCB layer count by eliminating separate unidirectional drivers and simplifies timing closure with <15 ns skew. |
| ADAS Camera Sensor Hub | Electric Power Steering (EPS) ECU Interconnect |
|
Use Scenario: Aggregating parallel LVDS or MIPI CSI-2 parallel data streams from multiple camera sensors into central processor. IC Role / Device Role / Timing Role: Synchronized bidirectional data conduit with DIR-controlled flow direction during configuration and streaming phases. Use Value: Enables deterministic latency (<27 ns max propagation) critical for real-time stereo vision processing. |
Use Scenario: Interfacing torque sensor ADC interface and motor gate driver logic in EPS control unit. IC Role / Device Role / Timing Role: Noise-immune bus transceiver isolating analog-sensing domain from high-current switching domain. Use Value: High noise immunity (>200 mV typical) prevents false triggering during MOSFET switching events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bidirectional bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT245BQ-Q100 | TTL-compatible inputs (VIH = 2.0 V min at VCC = 5 V), slightly higher ICC (160 μA max vs. 80 μA for HC) | Better suited for legacy 5 V TTL systems; less suitable for low-VCC (2.0–3.3 V) mixed-signal domains | Select when interfacing with older microcontrollers or logic families requiring TTL input thresholds. |
| SN74LVC245AQPWRQ1 | Lower VCC range (1.65–3.6 V), 3.3 V only; faster tpd (5.4 ns typ at 3.3 V); different pinout (TSSOP20) | Optimized for modern low-voltage automotive MCUs; incompatible pin-for-pin with DHVQFN20 layout | Choose for new designs targeting 3.3 V domains where speed and power efficiency outweigh package migration effort. |
Compared with 74HC245BQ-Q100, the 74HCT245BQ-Q100 offers TTL input compatibility at the cost of higher static current, while SN74LVC245AQPWRQ1 delivers superior speed and lower voltage operation but requires PCB redesign due to differing package and pin assignment.
Availability
74HC245BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment interconnects, and ADAS sensor hubs requiring stable component supply under AEC-Q100 Grade 1 compliance.
Supply support for 74HC245BQ-Q100 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
Nexperia is a global semiconductor expert delivering high-performance, high-reliability logic, discrete, and MOSFET solutions optimized for automotive, industrial, and consumer applications.
The 74HC245-Q100 product line delivers AEC-Q100-qualified octal transceivers designed specifically for robust, noise-immune bidirectional data routing in harsh automotive environments.
FAQ
What is the maximum clock frequency supported by 74HC245BQ-Q100?
The 74HC245BQ-Q100 does not operate on a clock; it is a combinatorial bus transceiver. Its usable data rate depends on propagation delay and load. With tpd = 7 ns (typ) at VCC = 6.0 V and CL = 15 pF, it supports reliable bus toggling up to ~70 MHz in point-to-point configurations, assuming proper signal integrity design and termination.
Can 74HC245BQ-Q100 interface 3.3 V and 5 V buses simultaneously?
No - it operates from a single VCC rail (2.0–6.0 V) and provides level translation only via input clamping diodes, which require external current-limiting resistors for overvoltage protection. True bidirectional level shifting between disparate voltage domains requires dedicated level translators like TXB0108, not bus transceivers.
Is the exposed thermal pad on the DHVQFN20 package electrically connected?
No - the thermal pad (terminal 1 index area) is electrically isolated per datasheet note: "This is not a ground pin. There is no electrical or mechanical requirement to solder the pad." If soldered, it must remain floating or be connected to GND; no internal connection exists to any signal or power net.
How does OE being active LOW affect system-level power sequencing?
Because OE is active LOW, the transceiver remains disabled (all outputs high-Z) until OE is actively driven LOW after VCC stabilizes. This prevents bus contention during power-up/down. System design must ensure OE is held HIGH (via pull-up or MCU GPIO) until both VCC and controlling logic are fully operational.
74HC245BQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DHVQFN (4.5x2.5)
74HC245BQ-Q100X FAQ
1.How can I place an order for 74HC245BQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC245BQ-Q100X 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 74HC245BQ-Q100X reliable?
The price and inventory of 74HC245BQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC245BQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74HC245BQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC245BQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC245BQ-Q100X?
74HC245BQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC245BQ-Q100X 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 74HC245BQ-Q100X?
For technical support, including 74HC245BQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC245BQ-Q100X requirements.
6.How does Aetrix verify that 74HC245BQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74HC245BQ-Q100X 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 74HC245BQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74HC245BQ-Q100X?
All 74HC245BQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74HC245BQ-Q100X, 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 74HC245BQ-Q100X part is unused and in its original packaging.
Return procedure for 74HC245BQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC245BQ-Q100X Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
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…
