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What is 74LVC2T45?

This electronic component, produced by the manufacturer "NXP Semiconductors", performs the same function as "Dual supply translating transceiver".


74LVC2T45 Datasheet PDF - NXP Semiconductors

Part Number 74LVC2T45
Description Dual supply translating transceiver
Manufacturers NXP Semiconductors 
Logo NXP Semiconductors Logo 


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74LVC2T45; 74LVCH2T45
Dual supply translating transceiver; 3-state
www.DataSheet4U.com
Rev. 03 — 19 January 2010
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 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)

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74LVC2T45 equivalent
NXP Semiconductors
8. Limiting values
74LVC2T45; 74LVCH2T45
Dual supply translating transceiver; 3-state
www.DataSheet4U.com
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min Max Unit
VCC(A)
VCC(B)
IIK
VI
IOK
VO
supply voltage A
supply voltage B
input clamping current
input voltage
output clamping current
output voltage
VI < 0 V
VO < 0 V
Active mode
Suspend or 3-state mode
0.5
0.5
50
[1] 0.5
50
[1][2][3] 0.5
[1] 0.5
+6.5
+6.5
-
+6.5
-
VCCO + 0.5
+6.5
V
V
mA
V
mA
V
V
IO output current
VO = 0 V to VCCO
[2] -
±50 mA
ICC
IGND
Tstg
Ptot
supply current
ground current
storage temperature
total power dissipation
ICC(A) or ICC(B)
Tamb = 40 °C to +125 °C
-
100
65
[4] -
100
-
+150
250
mA
mA
°C
mW
[1] The minimum input voltage ratings and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] VCCO is the supply voltage associated with the output port.
[3] VCCO + 0.5 V should not exceed 6.5 V.
[4] For VSSOP8 packages: above 110 °C the value of Ptot derates linearly with 8.0 mW/K.
For XSON8, XSON8U and XQFN8U packages: above 45 °C the value of Ptot derates linearly with 2.4 mW/K.
9. Recommended operating conditions
Table 6.
Symbol
VCC(A)
VCC(B)
VI
VO
Tamb
Δt/ΔV
Recommended operating conditions
Parameter
Conditions
supply voltage A
supply voltage B
input voltage
output voltage
Active mode
Suspend or 3-state mode
ambient temperature
input transition rise and fall rate
VCCI = 1.2 V
VCCI = 1.4 V to 1.95 V
VCCI = 2.3 V to 2.7 V
VCCI = 3 V to 3.6 V
VCCI = 4.5 V to 5.5 V
[1] VCCO is the supply voltage associated with the output port.
[2] VCCI is the supply voltage associated with the input port.
Min
1.2
1.2
0
[1] 0
0
40
[2] -
-
-
-
-
Max
5.5
5.5
5.5
VCCO
5.5
+125
20
20
20
10
5
Unit
V
V
V
V
V
°C
ns/V
ns/V
ns/V
ns/V
ns/V
74LVC_LVCH2T45_3
Product data sheet
Rev. 03 — 19 January 2010
© NXP B.V. 2010. All rights reserved.
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Part NumberDescriptionMFRS
74LVC2T45The function is Dual supply translating transceiver. NXP SemiconductorsNXP Semiconductors

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