74LVCH16T245ZQLR

74LVCH16T245ZQLR is a 16-bit bidirectional bus transceiver with tri-state outputs in the low‑voltage 74LVCH family. It provides two data ports (A and B) that can transfer data in either direction under a DIR control, and an output‑enable control to tri‑state the bus. The device is designed for level‑shifting and buffering between voltage domains (A and B sides can run at different Vcc levels) and operates from a low-voltage supply range. It offers fast CMOS timing, TTL/CMOS input compatibility, and ESD protection. ZQLR indicates RoHS-compliant, lead‑free packaging (tape & reel option). Typical use-cases include interfacing a microcontroller to memory or peripherals across different voltages, bus bridging/expansion, and isolating noisy lines on a data bus. Pinout (conceptual): A[15:0], B[15:0], DIR, OE (enable), VCCA, VCCB (if dual-supply variant), GND. Note: check the exact datasheet for the precise power pins and enable logic for your package.

Equivalent products are other vendors’ 16-bit bidirectional bus transceivers with the same function. Likely drop-ins include:
- Nexperia/NXP: 74LVCH16T245
- ON Semiconductor: 74LVC162245 (closest cross-family)
- TI cross-reference: SN74LVCH16T245 (same device)
Always verify pinout/package (ZQLR) via TI cross-reference or distributor data.

Here are the key features of the 74LVCH16T245ZQLR:
- 16-bit bidirectional bus transceiver (two 8-bit sections, A and B)
- Direction control input (DIR) to choose A→B or B→A
- 3-state outputs with a single output-enable control (OE) to tri-state both sides
- Low-voltage CMOS device; operable from the LV CMOS voltage range (typical 1.65–3.6 V)
- TTL/CMOS-compatible input thresholds
- High-impedance bus when disabled for shared-bus applications
- Suitable for back-to-back bus isolation and buffering between devices
- ESD protection on input pins (and standard TI quality/reliability features)
- Available in TI packaging variants (including -LR/tape & reel version)
Note: exact supply range and drive specs can vary by variant; refer to the datasheet for precise electrical characteristics.

Pin count: 40 pins (DIP/SMT variants).
Function: 16-bit bidirectional bus transceiver with tri-state outputs. It provides A0–A15 and B0–B15 data buses, with a common DIR control to select the data flow direction and an active-low /OE to enable/disable the outputs. Used to connect/float two buses or perform level-shifting between voltage domains.

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and digital integrated circuits and related products.

74LVCH16T245ZQLR is a 16-bit bidirectional bus transceiver with 3-state outputs. Typical application areas:
- Level shifting between devices at different logic voltages (e.g., 3.3V MCU with 5V peripherals)
- Microcontroller/data-bus buffering, expansion, and bus isolation
- Interfacing memory (RAM/ROM) and peripherals (LCDs, ADC/DAC, sensors) in embedded systems
- Backplane/system buses where one side must be tri-stated
- Signal routing in test fixtures, prototyping, and automotive/industrial control needing fast, low-power bidirectional data transfer

Package type: 20-pin TSSOP (Thin Shrink Small Outline Package); RoHS-compliant lead-free variant (suffix ZQLR).