TL16PNP100APT

The TL16PNP100APT is the surface-mount version of Texas Instruments' standalone ISA Plug and Play controller, the same silicon as the PLCC part delivered in a compact 48-pin TQFP measuring 7 x 7mm. It manages the complete ISA/AT Plug and Play sequence for an add-in card, isolating the card, taking a Card Select Number, reading its resource data from an external EEPROM, and activating it once resources are assigned. It operates from a single 5V supply across 0°C to 70°C.

Key Features

• Full PnP sequence on chip - performs ISA Plug and Play isolation, Card Select Number assignment, and activation with no local processor.
• Compact 48-pin TQFP - a 7 x 7mm quad flatpack on 0.5mm lead pitch for space-conscious surface-mount boards.
• 22 MHz clock input - a 10 to 22 MHz clock runs the PnP logic and generates the internal 0.68 MHz SCLK.
• 8-bit CPU interface - a bidirectional 8-bit data bus with the PnP address, write-data, and read-data registers.
• Two logical devices - two I/O logical devices with 10-bit address decode and selectable block sizes; DMA is not supported.
• EEPROM and IRQ mapping - a 3-wire ST93C56 or ST93C66 EEPROM interface and interrupt routing to IRQ3 through IRQ7 and IRQ9.
• Shared EEPROM access - a three-state EEPROM interface lets a second on-board controller use the same EEPROM once configuration is done.

Typical Applications

• Surface-mount ISA cards - PnP add-in cards where a TQFP footprint saves board area over a PLCC.
• Embedded ISA systems - compact industrial boards that still use the ISA bus.
• Production builds - volume manufacturing favoring a small quad flatpack.

Unique Advantages

• Small footprint, same function - the 7 x 7mm TQFP gives the full PnP controller in a fraction of the PLCC area for dense designs.
• Self-contained configuration - EEPROM-stored resource data and on-chip autoconfiguration keep card logic minimal.
• Surface-mount ready - the leaded TQFP suits automated assembly on modern boards.
• Identical programming model - sharing the PLCC part's silicon means BIOS and driver behavior carry over unchanged between the two packages.

Why Choose TL16PNP100APT?

The TL16PNP100APT suits ISA Plug and Play designs that need a surface-mount footprint rather than the through-hole-friendly PLCC. It delivers the same standalone autoconfiguration, EEPROM-based resource storage, and flexible I/O decoding in a 7 x 7mm TQFP, making it the right pick for compact and volume-manufactured ISA cards and for servicing boards already using it. Because the silicon matches the PLCC part exactly, a design can move between packages without revisiting firmware or driver support.

Reach out for pricing, availability, and lead time on the TL16PNP100APT, and ask about the 44-pin PLCC version if you need a socketed part.