Datasheet

1. General description
The 74AVC1T45 is a single bit, dual supply transceiver with 3-state output that enables
bidirectional level translation. It features two 1-bit input-output ports (A and B), a direction
control input (DIR) 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 A and DIR are referenced to V
CC(A)
and pin B is referenced to V
CC(B)
. A HIGH
on DIR allows transmission from A to B and a LOW on DIR allows transmission from B to
A.
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 A and B 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
 High noise immunity
 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:
 500 Mbit/s (1.8 V to 3.3 V translation)
 320 Mbit/s (< 1.8 V to 3.3 V translation)
 320 Mbit/s (translate to 2.5 V or 1.8 V)
 280 Mbit/s (translate to 1.5 V)
 240 Mbit/s (translate to 1.2 V)
 Suspend mode
 Latch-up performance exceeds 100 mA per JESD 78 Class II
74AVC1T45
Dual-supply voltage level translator/transceiver; 3-state
Rev. 4 — 22 June 2012 Product data sheet