74LVC3G34
Triple buffer
Rev. 07 — 9 May 2008
Product data sheet
1. General description
The 74LVC3G34 provides three buffers.
The inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of
the 74LVC3G34 as a translator in a mixed 3.3 V and 5 V environment.
This device is fully specified for partial power-down applications using I
OFF
. The I
OFF
circuitry disables the output, preventing a damaging backflow current through the device
when it is powered down.
2. Features
I
I
I
I
Wide supply voltage range from 1.65 V to 5.5 V
5 V tolerant input/output for interfacing with 5 V logic
High noise immunity
Complies with JEDEC standard:
N
JESD8-7 (1.65 V to 1.95 V)
N
JESD8-5 (2.3 V to 2.7 V)
N
JESD8B/JESD36 (2.7 V to 3.6 V)
ESD protection:
N
HBM JESD22-A114E exceeds 2000 V
N
MM JESD22-A115-A exceeds 200 V
±24
mA output drive (V
CC
= 3.0 V)
CMOS low power consumption
Latch-up performance exceeds 250 mA
Direct interface with TTL levels
Multiple package options
Specified from
−40 °C
to +85
°C
and
−40 °C
to +125
°C
I
I
I
I
I
I
I
NXP Semiconductors
74LVC3G34
Triple buffer
3. Ordering information
Table 1.
Ordering information
Package
Temperature range Name
74LVC3G34DP
74LVC3G34DC
74LVC3G34GT
74LVC3G34GD
74LVC3G34GM
−40 °C
to +125
°C
−40 °C
to +125
°C
−40 °C
to +125
°C
−40 °C
to +125
°C
−40 °C
to +125
°C
TSSOP8
Description
plastic thin shrink small outline package; 8 leads;
body width 3 mm; lead length 0.5 mm
Version
SOT505-2
Type number
VSSOP8 plastic very thin shrink small outline package; 8 leads; SOT765-1
body width 2.3 mm
XSON8
plastic extremely thin small outline package; no leads; SOT833-1
8 terminals; body 1
×
1.95
×
0.5 mm
XSON8U plastic extremely thin small outline package; no leads; SOT996-2
8 terminals; UTLP based; body 3
×
2
×
0.5 mm
XQFN8U plastic extremely thin quad flat package; no leads;
8 terminals; UTLP based; body 1.6
×
1.6
×
0.5 mm
SOT902-1
4. Marking
Table 2.
Marking codes
Marking code
V34
Y34
Y34
Y34
Y34
Type number
74LVC3G34DP
74LVC3G34DC
74LVC3G34GT
74LVC3G34GD
74LVC3G34GM
5. Functional diagram
1
1A
1Y
1
3Y
3A
2A
2Y
1
A
Y
001aac536
001aah842
001aah843
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
Fig 3.
Logic diagram (one gate)
74LVC3G34_7
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 07 — 9 May 2008
2 of 16
NXP Semiconductors
74LVC3G34
Triple buffer
6. Pinning information
6.1 Pinning
74LVC3G34
1A
1
8
V
CC
3Y
2
7
1Y
74LVC3G34
2A
1A
3Y
2A
GND
1
2
3
4
001aaa609
3
6
3A
8
7
6
5
V
CC
1Y
3A
2Y
GND
4
5
2Y
001aac024
Transparent top view
Fig 4.
Pin configuration SOT505-2 (TSSOP8) and
SOT765-1 (VSSOP8)
Fig 5.
Pin configuration SOT833-1 (XSON8)
74LVC3G34
terminal 1
index area
1Y
1
V
CC
8
7
1A
1A
3Y
2A
GND
1
2
8
7
V
CC
3A
1Y
3A
2Y
2Y
3
4
5
2A
2
6
3Y
74LVC3G34
3
4
6
5
GND
001aag083
001aah950
Transparent top view
Transparent top view
Fig 6.
Pin configuration SOT996-2 (XSON8U)
Fig 7.
Pin configuration SOT902-1 (XQFN8U)
6.2 Pin description
Table 3.
Symbol
Pin description
Pin
SOT505-2, SOT765-1,
SOT833-1 and SOT996-2
1A, 2A, 3A
1Y, 2Y, 3Y
GND
V
CC
1, 3, 6
7, 5, 2
4
8
SOT902-1
7, 5, 2
1, 3, 6
4
8
data input
data output
ground (0 V)
supply voltage
Description
74LVC3G34_7
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 07 — 9 May 2008
3 of 16
NXP Semiconductors
74LVC3G34
Triple buffer
7. Functional description
Table 4.
Input nA
L
H
[1]
H = HIGH voltage level;
L = LOW voltage level.
Function table
[1]
Output nY
L
H
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
I
IK
V
I
I
OK
V
O
I
O
I
CC
I
GND
P
tot
T
stg
[1]
[2]
[3]
Parameter
supply voltage
input clamping current
input voltage
output clamping current
output voltage
output current
supply current
ground current
total power dissipation
storage temperature
Conditions
V
I
< 0 V
[1]
Min
−0.5
−50
−0.5
-
[1]
[1][2]
Max
+6.5
-
+6.5
±50
V
CC
+ 0.5
+6.5
±50
100
-
250
+150
Unit
V
mA
V
mA
V
V
mA
mA
mA
mW
°C
V
O
> V
CC
or V
O
< 0 V
Active mode
Power-down mode
V
O
= 0 V to V
CC
−0.5
−0.5
-
-
−100
T
amb
=
−40 °C
to +125
°C
[3]
-
−65
The minimum input and output voltage ratings may be exceeded if the input and output current ratings are observed.
When V
CC
= 0 V (Power-down mode), the output voltage can be 5.5 V in normal operation.
For TSSOP8 package: above 55
°C
the value of P
tot
derates linearly with 2.5 mW/K.
For VSSOP8 package: above 110
°C
the value of P
tot
derates linearly with 8 mW/K.
For XSON8, XSON8U and XQFN8U packages: above 45
°C
the value of P
tot
derates linearly with 2.4 mW/K.
9. Recommended operating conditions
Table 6.
Symbol
V
CC
V
I
V
O
T
amb
∆t/∆V
Operating conditions
Parameter
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 1.65 V to 2.7 V
V
CC
= 2.7 V to 5.5 V
Active mode
Power-down mode; V
CC
= 0 V
Conditions
Min
1.65
0
0
0
−40
-
-
Max
5.5
5.5
V
CC
5.5
+125
20
10
Unit
V
V
V
V
°C
ns/V
ns/V
74LVC3G34_7
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 07 — 9 May 2008
4 of 16
NXP Semiconductors
74LVC3G34
Triple buffer
10. Static characteristics
Table 7.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
T
amb
=
−40 °C
to +85
°C
V
IH
HIGH-level input voltage
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
V
IL
LOW-level input voltage
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
V
OH
HIGH-level output voltage
V
I
= V
IH
or V
IL
I
O
=
−100 µA;
V
CC
= 1.65 V to 5.5 V
I
O
=
−4
mA; V
CC
= 1.65 V
I
O
=
−8
mA; V
CC
= 2.3 V
I
O
=
−12
mA; V
CC
= 2.7 V
I
O
=
−24
mA; V
CC
= 3.0 V
I
O
=
−32
mA; V
CC
= 4.5 V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
I
O
= 100
µA;
V
CC
= 1.65 V to 5.5 V
I
O
= 4 mA; V
CC
= 1.65 V
I
O
= 8 mA; V
CC
= 2.3 V
I
O
= 12 mA; V
CC
= 2.7 V
I
O
= 24 mA; V
CC
= 3.0 V
I
O
= 32 mA; V
CC
= 4.5 V
I
I
I
OFF
I
CC
∆I
CC
C
I
V
IH
input leakage current
power-off leakage current
supply current
additional supply current
input capacitance
HIGH-level input voltage
V
I
= 5.5 V or GND; V
CC
= 0 V to 5.5 V
V
CC
= 0 V; V
I
or V
O
= 5.5 V
V
I
= 5.5 V or GND;
V
CC
= 1.65 V to 5.5 V; I
O
= 0 A
per pin; V
CC
= 2.3 V to 5.5 V;
V
I
= V
CC
−
0.6 V; I
O
= 0 A
V
CC
= 3.3 V; V
I
= GND to V
CC
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
V
IL
LOW-level input voltage
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
74LVC3G34_7
Conditions
Min
0.65
×
V
CC
1.7
2.0
0.7
×
V
CC
-
-
-
-
V
CC
−
0.1
1.2
1.9
2.2
2.3
3.8
-
-
-
-
-
-
-
-
-
-
-
0.65
×
V
CC
1.7
2.0
0.7
×
V
CC
-
-
-
-
Typ
[1]
Max
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
±0.1
±0.1
0.1
5
2.5
-
-
-
-
-
-
-
-
-
-
-
-
0.35
×
V
CC
0.7
0.8
0.3
×
V
CC
-
-
-
-
-
-
0.1
0.45
0.3
0.4
0.55
0.55
±5
±10
10
500
-
-
-
-
-
0.35
×
V
CC
0.7
0.8
0.3
×
V
CC
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
pF
V
V
V
V
V
V
V
V
5 of 16
T
amb
=
−40 °C
to +125
°C
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 07 — 9 May 2008
嵌入式系统
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