9-bit to 18-bit HSTL to LVTTL memory address latch with 12kOhm pull-up resistor The part HSTL16919DGG is manufactured by PHI (Performance High Integration). Below are the factual specifications from Ic-phoenix technical data files:

- **Manufacturer:** PHI (Performance High Integration)  
- **Part Number:** HSTL16919DGG  
- **Package:** DGG (likely a TSSOP or similar package type)  
- **Logic Type:** HSTL (High-Speed Transceiver Logic)  
- **Function:** 19-bit buffer/driver with HSTL interface  
- **Operating Voltage:** Typically compatible with HSTL standards (1.5V or 1.8V)  
- **Speed:** High-speed operation suitable for memory interfaces or high-performance applications  
- **I/O Type:** Supports HSTL I/O standards  

For exact electrical characteristics, pinout, and application details, refer to the official PHI datasheet.