74LVCH244APW-Q100J

Overview

The Nexperia 74LVCH244APW-Q100J is an octal non-inverting buffer and line driver featuring three-state outputs, housed in a TSSOP20 (SOT360-1) package. It operates within a supply voltage range of 1.2 V to 3.6 V and supports input voltages up to 5.5 V for interfacing with 5 V logic devices. The component includes bus hold functionality on all data inputs to eliminate the need for external pull-up resistors. Qualified to AEC-Q100 Grade 1 standards, it ensures reliability across an ambient temperature range of -40 °C to +125 °C.

Feature Summary

• Bus hold circuitry on all data inputs prevents floating states without external components
• Five-volt tolerant inputs and outputs enable direct interfacing between 3.3 V and 5 V logic domains
• Schmitt-trigger action at all inputs provides high tolerance for slow signal transitions
• High-impedance output state activates when supply voltage is zero

Applications

• Automotive electronic systems requiring AEC-Q100 Grade 1 qualification
• Mixed voltage environments facilitating translation between 3.3 V and 5 V logic levels
• Octal buffering and line driving applications in consumer electronics
• Data bus holding circuits eliminating external pull-up resistor requirements

Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP20 package variant during procurement. Confirm that the Q100 designation aligns with automotive grade requirements for your target application. Ensure compatibility with the specified operating temperature range of -40 °C to +125 °C. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and current production status before finalizing orders.

Selection Notes

Select this component when an octal buffer with five-volt tolerance is required for automotive or industrial designs. The inclusion of bus hold features simplifies PCB layout by removing the need for external pull-up resistors on unused inputs. Consider the TSSOP20 package dimensions if space constraints favor thin shrink small outline packages over standard SOIC variants. Verify that the 1.2 V to 3.6 V supply range matches the system power architecture.

Part Context

This device belongs to the Nexperia 74LVC/LVCH244A-Q100 family of octal buffers. The LVCH variant specifically incorporates bus hold capabilities not present in the standard LVC version. All members share identical functional diagrams and pinouts but differ in internal circuitry regarding input holding mechanisms. The family supports multiple package options including SO20 and DHVQFN20 to accommodate diverse board design requirements.

Replacement Considerations

The 74LVCH244AD-Q100 serves as a package-compatible alternative using the SO20 form factor. Designers must verify pinout consistency and thermal dissipation characteristics when substituting between TSSOP20 and SO20 packages. Ensure the replacement maintains the same AEC-Q100 Grade 1 qualification level for automotive compliance.