STMicroelectronics ST2149B
The ST2149B is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Its architecture allows bi-directional level translation without a control pin. The ST2149B accepts VL from 1.65 to 3.6 V and VCC from VL to 5.5 V, making it ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems.| Part No. | ST2149B |
|---|---|
| Datasheet | ST2149B Download |
| Manufacturer |  STMicroelectronics |
| Description | 4-bit dual supply level translator |
| Buy | Stock & Price |
FEATURES
● 45 MHz: 90 Mbps (max.) data rate at VL = 1.8 V, VCC = 3.3 V● Bi-directional level translation without direction control pin
● Wide voltage range (VL ≤ VCC): – VL ranges from 1.65 to 3.6 V – VCC ranges from 1.65 to 5.5 V
● Totem-pole driving
● 5.5 V tolerant enable pin
● ESD performance on all pins: ±2 kV HBM
● Small package and footprint QFN12 (1.7 x 2.0 mm)
APPLICATIONS
● Low-voltage system level translation● Mobile phones and other mobile devices Datasheet −production data QFN12 (1.7 x 2.0 mm) Table 1. Device summary Order code Package Packing Package topmark Tape and ST2149BQTR QFN12 (1.7 x 2.0 mm) reel (3000 parts per 49A reel) June 2012 This is information on a product in full production. Doc ID 023310 Rev 1 1/23 1 ST2149B 1
DESCRIPTION
DESCRIPTION
Externally applied voltages, VCC and VL, set the logic levels on either side of the device. This device has a tri-state output mode which can be used to disable all I/Os. Doc ID 023310 Rev 1 5/23 Pin settings 2 Pin settings ST2149B 2.1 Pin connection Figure 1.
