The SN74CBTD16211 provides 24 bits of high-speed TTL-compatible bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. A diode to VCC is integrated in the circuit to allow for level shifting from 5-V signals at the device inputs to 3.3-V signals at the device outputs.
The device is organized as a dual 12-bit bus switch with separate output-enable (OE) inputs. It can be used as two 12-bit bus switches or as one 24-bit bus switch. When (OE) is low, the associated 12-bit bus switch is on, and port A is connected to port B. When (OE) is high, the switch is open, and the high-impedance state exists between the ports.
Widebus is a trademark of Texas Instruments.
| Configuration | 1 |
| Number of channels | 24 |
| Power supply voltage - single (V) | 5 |
| Protocols | Analog |
| Ron (typ) (Ω) | 5 |
| ON-state leakage current (max) (µA) | 1 |
| Bandwidth (MHz) | 20 |
| Operating temperature range (°C) | -40 to 85 |
| Input/output continuous current (max) (mA) | 128 |
| Rating | Catalog |
| Drain supply voltage (max) (V) | 5.5 |
| Supply voltage (max) (V) | 5.5 |
| SSOP (DL) | 56 | 190.647 mm² 18.42 x 10.35 |
| TSSOP (DGG) | 56 | 113.4 mm² 14 x 8.1 |
| TVSOP (DGV) | 56 | 72.32 mm² 11.3 x 6.4 |
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