74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
Rev. 5 — 19 December 2011
Product data sheet
1. General description
The 74LVC1T45; 74LVCH1T45 are single bit, dual supply transceivers with 3-state
outputs that enables bidirectional level translation. They feature 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 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 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 devices are 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 port and B port are in the high-impedance OFF-state.
Active bus hold circuitry in the 74LVCH1T45 holds unused or floating data inputs at a valid
logic level.
2. Features and benefits
Wide supply voltage range:
V
CC(A)
: 1.2 V to 5.5 V
V
CC(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-A114F Class 3A exceeds 4000 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)
Suspend mode
NXP Semiconductors
74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
Latch-up performance exceeds 100 mA per JESD 78 Class II
24
mA output drive (V
CC
= 3.0 V)
Inputs accept voltages up to 5.5 V
Low power consumption: 16
A
maximum I
CC
I
OFF
circuitry provides partial Power-down mode operation
Multiple package options
Specified from
40 C
to +85
C
and
40 C
to +125
C
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74LVC1T45GW
74LVCH1T45GW
74LVC1T45GM
74LVCH1T45GM
74LVC1T45GF
74LVCH1T45GF
74LVC1T45GN
74LVCH1T45GN
74LVC1T45GS
74LVCH1T45GS
40 C
to +125
C
XSON6
40 C
to +125
C
XSON6
40 C
to +125
C
XSON6
40 C
to +125
C
XSON6
plastic extremely thin small outline package; no leads; SOT886
6 terminals; body 1
1.45
0.5 mm
plastic extremely thin small outline package; no leads; SOT891
6 terminals; body 1
1
0.5 mm
extremely thin small outline package; no leads;
6 terminals; body 0.9
1.0
0.35 mm
extremely thin small outline package; no leads;
6 terminals; body 1.0
1.0
0.35 mm
SOT1115
SOT1202
40 C
to +125
C
Name
SC-88
Description
plastic surface-mounted package; 6 leads
Version
SOT363
Type number
4. Marking
Table 2.
Marking
Marking code
[1]
V5
X5
V5
X5
V5
X5
V5
X5
V5
X5
Type number
74LVC1T45GW
74LVCH1T45GW
74LVC1T45GM
74LVCH1T45GM
74LVC1T45GF
74LVCH1T45GF
74LVC1T45GN
74LVCH1T45GN
74LVC1T45GS
74LVCH1T45GS
[1]
The pin 1 indicator is located on the lower left corner of the device, below the marking code.
74LVC_LVCH1T45
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 19 December 2011
2 of 33
NXP Semiconductors
74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
5. Functional diagram
DIR
5
DIR
3
A
4
V
CC(A)
V
CC(B)
V
CC(A)
001aag885
A
B
B
V
CC(B)
001aag886
Fig 1.
Logic symbol
Fig 2.
Logic diagram
6. Pinning information
6.1 Pinning
74LVC1T45
74LVCH1T45
74LVC1T45
74LVCH1T45
V
CC(A)
GND
1
2
6
5
V
CC(B)
DIR
A
A
3
001aaj991
V
CC(A)
1
6
V
CC(B)
V
CC(A)
GND
74LVC1T45
74LVCH1T45
1
2
3
6
5
4
V
CC(B)
DIR
B
GND
2
5
DIR
3
4
B
A
4
B
001aaj992
001aaj993
Transparent top view
Transparent top view
Fig 3.
Pin configuration SOT363
(SC-88)
Fig 4.
Pin configuration SOT886
(XSON6)
Fig 5.
Pin configuration SOT891,
SOT1115 and SOT1202
6.2 Pin description
Table 3.
Symbol
V
CC(A)
GND
A
B
DIR
V
CC(B)
Pin description
Pin
1
2
3
4
5
6
Description
supply voltage port A and DIR
ground (0 V)
data input or output
data input or output
direction control
supply voltage port B
74LVC_LVCH1T45
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 19 December 2011
3 of 33
NXP Semiconductors
74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
7. Functional description
Table 4.
Function table
[1]
Input
DIR
L
H
X
Input/output
[2]
A
A=B
input
Z
B
input
B=A
Z
Supply voltage
V
CC(A)
, V
CC(B)
1.2 V to 5.5 V
1.2 V to 5.5 V
GND
[3]
[1]
[2]
[3]
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
The input circuit of the data I/O is always active.
When either V
CC(A)
or V
CC(B)
is at GND level, the device goes into suspend mode.
8. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC(A)
V
CC(B)
I
IK
V
I
I
OK
V
O
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
[3]
[4]
Parameter
supply voltage A
supply voltage B
input clamping current
input voltage
output clamping current
output voltage
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
Min
0.5
0.5
Max
+6.5
+6.5
-
+6.5
-
V
CCO
+ 0.5
+6.5
50
100
-
+150
250
Unit
V
V
mA
V
mA
V
V
mA
mA
mA
C
mW
V
I
< 0 V
[1]
50
0.5
50
[1][2][3]
[1]
[2]
V
O
< 0 V
Active mode
Suspend or 3-state mode
V
O
= 0 V to V
CCO
I
CC(A)
or I
CC(B)
0.5
0.5
-
-
100
65
T
amb
=
40 C
to +125
C
[4]
-
The minimum input voltage ratings and output voltage ratings may be exceeded if the input and output current ratings are observed.
V
CCO
is the supply voltage associated with the output port.
V
CCO
+ 0.5 V should not exceed 6.5 V.
For SC-88 package: above 87.5
C
the value of P
tot
derates linearly with 4.0 mW/K.
For XSON6 package: above 118
C
the value of P
tot
derates linearly with 7.8 mW/K.
9. Recommended operating conditions
Table 6.
Symbol
V
CC(A)
V
CC(B)
V
I
Recommended operating conditions
Parameter
supply voltage A
supply voltage B
input voltage
Conditions
Min
1.2
1.2
0
Max
5.5
5.5
5.5
Unit
V
V
V
74LVC_LVCH1T45
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 19 December 2011
4 of 33
NXP Semiconductors
74LVC1T45; 74LVCH1T45
Dual supply translating transceiver; 3-state
Table 6.
Symbol
V
O
T
amb
t/V
Recommended operating conditions
…continued
Parameter
output voltage
ambient temperature
input transition rise and fall rate
V
CCI
= 1.2 V
V
CCI
= 1.4 V to 1.95 V
V
CCI
= 2.3 V to 2.7 V
V
CCI
= 3 V to 3.6 V
V
CCI
= 4.5 V to 5.5 V
[2]
Conditions
Active mode
Suspend or 3-state mode
[1]
Min
0
0
40
-
-
-
-
-
Max
V
CCO
5.5
+125
20
20
20
10
5
Unit
V
V
C
ns/V
ns/V
ns/V
ns/V
ns/V
[1]
[2]
V
CCO
is the supply voltage associated with the output port.
V
CCI
is the supply voltage associated with the input port.
10. Static characteristics
Table 7.
Typical static characteristics at T
amb
= 25
C
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
OH
V
OL
I
I
I
BHL
I
BHH
I
BHLO
I
BHHO
I
OZ
I
OFF
HIGH-level output voltage
LOW-level output voltage
input leakage current
bus hold LOW current
bus hold HIGH current
bus hold LOW overdrive
current
bus hold HIGH overdrive
current
OFF-state output current
power-off leakage current
Conditions
V
I
= V
IH
or V
IL
I
O
=
3
mA; V
CCO
= 1.2 V
V
I
= V
IH
or V
IL
I
O
= 3 mA; V
CCO
= 1.2 V
DIR input; V
I
= 0 V to 5.5 V;
V
CCI
= 1.2 V to 5.5 V
A or B port; V
I
= 0.42 V; V
CCI
= 1.2 V
A or B port; V
I
= 0.78 V; V
CCI
= 1.2 V
A or B port; V
CCI
= 1.2 V
A or B port; V
CCI
= 1.2 V
A or B port; V
O
= 0 V or V
CCO
;
V
CCO
= 1.2 V to 5.5 V
A port; V
I
or V
O
= 0 V to 5.5 V;
V
CC(A)
= 0 V; V
CC(B)
= 1.2 V to 5.5 V
B port; V
I
or V
O
= 0 V to 5.5 V;
V
CC(B)
= 0 V; V
CC(A)
= 1.2 V to 5.5 V
C
I
C
I/O
input capacitance
input/output capacitance
DIR input; V
I
= 0 V or 3.3 V;
V
CC(A)
= V
CC(B)
= 3.3 V
A and B port; suspend mode;
V
O
= 3.3 V or 0 V; V
CC(A)
= V
CC(B)
= 3.3 V
[1]
[2]
[1]
Min
-
-
-
-
-
-
-
-
-
-
-
-
Typ
1.09
0.07
-
19
19
19
19
-
-
-
2.2
6.0
Max
-
-
1
-
-
-
-
1
1
1
-
-
Unit
V
V
A
A
A
A
A
A
A
A
pF
pF
[2]
[2]
[2][3]
[2][3]
[1]
[1]
[2]
[3]
V
CCO
is the supply voltage associated with the output port.
V
CCI
is the supply voltage associated with the data input port.
To guarantee the node switches, an external driver must source/sink at least I
BHLO
/I
BHHO
when the input is in the range V
IL
to V
IH
.
74LVC_LVCH1T45
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 19 December 2011
5 of 33
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