Important notice
Dear Customer,
On 7 February 2017 the former NXP Standard Product business became a new company with the
tradename Nexperia. Nexperia is an industry leading supplier of Discrete, Logic and PowerMOS
semiconductors with its focus on the automotive, industrial, computing, consumer and wearable
application markets
In data sheets and application notes which still contain NXP or Philips Semiconductors references, use
the references to Nexperia, as shown below.
Instead of
74LVC2T45; 74LVCH2T45
Dual supply translating transceiver; 3-state
Rev. 8 29 March 2013 Product data sheet
1. General description
The 74LVC2T45; 74LVCH2T45 are dual bit, dual supply translating transceivers with
3-state outputs that enable bidirectional level translation. They feature two 2-bits
input-output ports (nA and nB), a direction control input (DIR) and dual supply pins (V
CC(A)
and V ). Both V and V can be supplied at any voltage between 1.2 V and
CC(B) CC(A) CC(B)
5.5 V making the device suitable for translating between any of the low voltage nodes
(1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V). Pins nA and DIR are referenced to V and
CC(A)
pins nB are referenced to V . A HIGH on DIR allows transmission from nA to nB and a
CC(B)
LOW on DIR allows transmission from nB to nA.
The devices are fully specified for partial power-down applications using I . The I
OFF OFF
circuitry disables the output, preventing any damaging backflow current through the
device when it is powered down. In suspend mode when either V or V are at
CC(A) CC(B)
GND level, both A port and B port are in the high-impedance OFF-state.
Active bus hold circuitry in the 74LVCH2T45 holds unused or floating data inputs at a valid
logic level.
2. Features and benefits
Wide supply voltage range:
V : 1.2 V to 5.5 V
CC(A)
V : 1.2 V to 5.5 V
CC(B)
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)
JESD8C (2.7 V to 3.6 V)
JESD36 (4.5 V to 5.5 V)
ESD protection:
HBM JESD22-A114F Class 3A exceeds 4000 V
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
Maximum data rates:
420 Mbps (3.3 V to 5.0 V translation)
210 Mbps (translate to 3.3 V))
140 Mbps (translate to 2.5 V)
75 Mbps (translate to 1.8 V)
60 Mbps (translate to 1.5 V)