74AVC2T245
2-bit dual supply translating transceiver with configurable
voltage translation; 3-state
Rev. 2 — 6 April 2017 Product data sheet
1 General description
The 74AVC2T245 is a 2-bit, dual supply transceiver that enables bidirectional level
translation. The device can be used as two 1-bit transceivers or as a 2-bit transceiver.
It features two 2-bit input-output ports (An and Bn) and direction control inputs (DIRn),
an output enable input (OE) and dual supply pins (V
CC(A)
and V
CC(B)
). Both V
CC(A)
and
V
CC(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 DIRn are referenced to V
CC(A)
and pins Bn are
referenced to V
CC(B)
. A HIGH on DIRn allows transmission from An to Bn and a LOW on
DIRn 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 I
OFF
. The I
OFF
circuitry disables the output, preventing any damaging backflow current through the
device when it is powered down. In suspend mode when either V
CC(A)
or V
CC(B)
are at
GND level, both An and Bn are in the high-impedance OFF-state.
2 Features and benefits
• Wide supply voltage range:
– V
CC(A)
: 0.8 V to 3.6 V
– V
CC(B)
: 0.8 V to 3.6 V
• Complies with JEDEC standards:
– JESD8-12 (0.8 V to 1.3 V)
– JESD8-11 (0.9 V to 1.65 V)
– JESD8-7 (1.2 V to 1.95 V)
– JESD8-5 (1.8 V to 2.7 V)
– JESD8-B (2.7 V to 3.6 V)
• ESD protection:
– HBM JESD22-A114E Class 3B exceeds 8000 V
– CDM JESD22-C101C exceeds 1000 V
• Maximum data rates:
– 380 Mbit/s (≥ 1.8 V to 3.3 V translation)
– 200 Mbit/s (≥ 1.1 V to 3.3 V translation)
– 200 Mbit/s (≥ 1.1 V to 2.5 V translation)
– 200 Mbit/s (≥ 1.1 V to 1.8 V translation)
– 150 Mbit/s (≥ 1.1 V to 1.5 V translation)
– 100 Mbit/s (≥ 1.1 V to 1.2 V translation)
• Suspend mode
• Latch-up performance exceeds 100 mA per JESD 78 Class II
• Inputs accept voltages up to 3.6 V
