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74LVCH2T45GT 데이터시트(PDF) 1 Page - NXP Semiconductors

부품명 74LVCH2T45GT
상세설명  Dual supply translating transceiver; 3-state
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제조업체  NXP [NXP Semiconductors]
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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 data
input-output ports (nA and nB), a direction control input (DIR) and dual supply pins (VCC(A)
and VCC(B)). Both VCC(A) and VCC(B) can be supplied at any voltage between 1.2 V and
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 VCC(A) and
pins nB are referenced to VCC(B). A HIGH on DIR allows transmission from nA to nB and a
LOW on DIR allows transmission from nB to nA.
The devices are fully specified for partial power-down applications using IOFF. The IOFF
circuitry disables the output, preventing any damaging backflow current through the
device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at
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
Wide supply voltage range:
VCC(A): 1.2 V to 5.5 V
VCC(B): 1.2 V to 5.5 V
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-A114E Class 3A exceeds 4000 V
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101C 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)
74LVC2T45; 74LVCH2T45
Dual supply translating transceiver; 3-state
Rev. 03 — 19 January 2010
Product data sheet


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