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PTN3300B
Datasheet
General description
The PTN3300B is a high-speed level shifter device which converts four lanes of low-swing AC-coupled differential input signals to DVI and HDMI compliant open-drain current-steering differential output signals, up to 2.25 Gbit/s per lane. Each of these lanes provides a level-shifting differential buffer to translate from low-swing AC-coupled differential signaling on the source side, to TMDS-type DC-coupled differential current-mode signaling terminated into 50 Ohm to 3.3 V on the sink side. Additionally, the PTN3300B provides a single-ended active buffer for voltage translation of the HPD signal from 5 V on the sink side to 3.3 V on the source side and provides a channel for level shifting of the DDC channel (consisting of a clock and a data line) between 3.3 V source side and 5 V sink side. The DDC channel is implemented using pass gate technology allowing level shifting as well as disablement (isolation between source and sink) of the clock and data lines.
The low-swing AC-coupled differential input signals to the PTN3300B typically come from a display source with multi-mode I/O, which supports multiple display standards, e.g., DisplayPort, HDMI and DVI. While the input differential signals are configured to carry DVI or HDMI coded data, they do not comply with the electrical requirements of the DVI v1.0 or HDMI v1.3a specification. By using PTN3300B, chip set vendors are able to implement such reconfigurable I/Os on multi-mode display source devices, allowing the support of multiple display standards while keeping the number of chip set I/O pins low. See Figure 1.
The PTN3300B main high-speed differential lanes feature low-swing self-biasing differential inputs which are compliant to the electrical specifications of DisplayPort Standard v1.1 and/or PCI Express Standard v1.1, and open-drain current-steering differential outputs compliant to DVI v1.0 and HDMI v1.3a electrical specifications. The PTN3300B also supports power-saving modes in order to minimize current consumption when no display is active or connected.
The PTN3300B supports level translation functions and features supporting both DVI and HDMI. A derivative, PTN3300A, is available that is identical to the PTN3300B except that the HPD_SOURCE_N output is the inverting function of input HPD_SINK, level shifted to 1.1 V. For a fully-featured HDMI/DVI level shifter function that supports active buffering of the DDC lines and HDMI dongle detect, the PTN3301 should be used.
PTN3300B is powered from a single 3.3 V power supply consuming a small amount of power (120 mW typical) and is offered in two different 48-terminal HWQFN packages, one laminate based (no terminals visible from edge of the package), and one leadframe-based (terminals visible from edge of the package).
Features
High-speed TMDS level shifting
- Converts four lanes of low-swing AC-coupled differential input signals to DVI and HDMI compliant open-drain current-steering differential output signals
- TMDS level shifting operation up to 2.25 Gbit/s per lane (225 MHz character clock)
- Integrated 50 Ohm termination resistors for self-biasing differential inputs
- Back-current safe outputs to disallow current when device power is off and monitor is on
- Disable feature to turn off TMDS inputs and outputs and to enter low-power state
DDC level shifting
- Integrated DDC level shifting (3.3 V source to 5 V sink side)
- 0 Hz to 400 kHz clock frequency
- Back-power safe to disallow backdrive current when power is off or when DDC is not enabled
HPD level shifting
- HPD non-inverting level shift from 0 V on the sink side to 0 V on the source side, or from 5 V on the sink side to 3.3 V on the source side
- Integrated 200 kOhm pull-down resistor on HPD sink input guarantees 'input LOW' when no display is plugged in
General
- Power supply 3.3 V+-10 pct
- ESD resilience to 3.5 kV HBM, 1 kV CDM
- Power-saving modes by source side disablement (using output enable) as well as sink side detection (using HPD)
- Back-current-safe design on all sink side terminals
- Transparent operation: no re-timing or software configuration required
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| PTN3300BHF | PTN3300BHF-T | 9352 865 05518 | Volume production | SOT1031-2
(HWQFN48R) | Reel Dry Pack, SMD, 13" | Standard Marking | PTN3300BHF
| |
| PTN3300BHF2 | PTN3300BHF2-T | 9352 866 66518 | Volume production | SOT1074-1
(HWQFN48) | Reel Dry Pack, SMD, 13" | Standard Marking | PTN3300BHF2
|
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| PTN3300BHF | 9352 865 05518 | NA | DIGI-KEY CORPORATION | 8,000 | 1/8/2009 | Buy online | not available | ||
| NA | DIGI-KEY CORPORATION | 8,000 | 1/8/2009 | Buy online | |||||
| PTN3300BHF2 | 9352 866 66518 | not available |
Design support
Support Documents
Parametrics/similar products
| Type number | Package | Supply voltage(V) | Standby current(uA) | Data transfer rate(Mb/s) | Supply current(mA) |
|---|---|---|---|---|---|
| PTN3300BHF | SOT1031-2
(HWQFN48R) | 3.0~3.6 | 0.15 | 2250 | 24 |
| PTN3300BHF2 | SOT1074-1
(HWQFN48) | 3.0~3.6 | 0.15 | 2250 | 24 |
Similar products
PTN3300B
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