Datasheet

1. General description
The 74AVC4T245 is an 4-bit, dual supply transceiver that enables bidirectional level
translation. The device can be used as two 2-bit transceivers or as a 4-bit transceiver. It
features four 2-bit input-output ports (nAn and nBn), a direction control input (nDIR), a
output enable input (nOE
) 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 nAn, nOE
and nDIR are referenced to V
CC(A)
and pins nBn are referenced to
V
CC(B)
. A HIGH on nDIR allows transmission from nAn to nBn and a LOW on nDIR allows
transmission from nBn to nAn. The output enable input (nOE
) 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 nAn and nBn 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
 MM JESD22-A115-A exceeds 200 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)
74AVC4T245
4-bit dual supply translating transceiver with configurable
voltage translation; 3-state
Rev. 4 — 7 December 2011 Product data sheet