1. General description
The 74AUP2T1326 is a high-performance, dual supply, low-power, low-voltage, dual
buffer/line driver with output enable circuitry.
The 74AUP2T1326 is designed for logic-level translation and combines the functions of
the 74AUP1G32 and 74AUP2G126. The buffer/line driver is controlled by two output
enable inputs (1OE and 2OE). A logic LOW on input 1OE causes the output 2Y to assume
a high-impedance OFF-state, a logic LOW on 2OE causes the output 3Y to assume a
high-impedance OFF-state. The output 1Y is the result of a logic OR of the two output
enable inputs.
The output enable inputs (1OE and 2OE) are Schmitt trigger inputs, they switch at
different voltages for positive and negative-going signals. The difference between the
positive voltage V
T+
and the negative voltage V
T
is defined as the input hysteresis
voltage V
H
. The output enable inputs accept standard input signals and are capable of
transforming slowly changing input signals into sharply defined, jitter-free output signals
Both V
CC(A)
and V
CC(B)
can be supplied at any voltage between 1.1 V and 3.6 V making
the device suitable for interfacing between any of the low voltage nodes (1.2 V, 1.5 V,
1.8 V, 2.5 V and 3.3 V) with compatible input levels. Pins 1OE, 2OE and 1Y are
referenced to V
CC(A)
and pins A, 2Y and 3Y are referenced to V
CC(B)
.
The device ensures low static and dynamic power consumption and is fully specified for
partial power down applications using I
OFF
. The I
OFF
circuitry disables the outputs,
preventing any damaging backflow current through the device when it is powered down.
2. Features and benefits
Wide supply voltage range:
V
CC(A)
: 1.1 V to 3.6 V; V
CC(B)
: 1.1Vto3.6V.
High noise immunity
Complies with JEDEC standards:
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-A114F Class 2A exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
Low static power consumption; I
CC
= 0.9 A (maximum)
Latch-up performance exceeds 100 mA per JESD 78 Class II
74AUP2T1326
Low-power dual supply buffer/line driver; 3-state
Rev. 2 — 3 July 2012 Product data sheet
