74AVCH8T245BQ: 8-bit dual supply translating transceiver
The 74AVCH8T245 is an 8-bit, dual supply transceiver that enables bidirectional level translation. It features two 8-bit input-output ports (An and Bn), a direction control input (DIR), a output enable input (OE) and dual supply pins (VCC(A) and VCC(B)). Both VCC(A) and VCC(B) can be supplied at any voltage between 0.8 V and 3.6 V making the device suitable for translating between any of the low voltage nodes (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V). Pins An, OE and DIR are referenced to VCC(A) and pins Bn are referenced to VCC(B). A HIGH on DIR allows transmission from An to Bn and a LOW on DIR allows transmission from Bn to An. The output enable input (OE) can be used to disable the outputs so the buses are effectively isolated.
The device is fully specified for partial power-down applications using IOFF. The IOFF circuitry disables the output, preventing any damaging backflow current through the device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at GND level, both An and Bn outputs are in the high-impedance OFF-state. The bus-hold circuitry on the powered-up side always stays active.
The 74AVCH8T245 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.
Outline 3d SOT815-1
Data Sheets (1)
Application Notes (2)
Brochures (2)
Selector Guides (2)
Package Information (1)
Packing (1)
Ordering Information
| Product | Status | Family | VCC(A) (V) | Function | Description | VCC(B) (V) | Logic switching levels | Package version | Output drive capability (mA) | tpd (ns) | No of bits | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins |
|---|
| 74AVCH8T245BQ | Active | AVC(M) | 0.8 - 3.6 | Level shifters/translators | 8-bit dual-supply voltage translating transceiver with bus hold (3-state) | 0.8 - 3.6 | CMOS/LVTTL | SOT815-1 | +/- 12 | 2.1 | 8 | very low | -40~125 | 67 | 6.2 | 41 | DHVQFN24 | 24 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | MSL | MSL LF |
|---|
| 74AVCH8T245BQ | | SOT815-1 | | Reel 13" Q1/T1 | Active | 74AVCH8T245BQ,118
(9352 845 92118) | VCH8T245 | 74AVCH8T245BQ |    | Always Pb-free | 1 | 1 |
