74HC3G34; 74HCT3G34
Triple buffer gate
Rev. 7 — 11 June 2018
Product data sheet
1
General description
The 74HC3G34; 74HCT3G34 is a triple buffer. Inputs include clamp diodes. This enables
the use of current limiting resistors to interface inputs to voltages in excess of V
CC
.
2
Features and benefits
•
Wide supply voltage range from 2.0 V to 6.0 V
•
Input levels:
–
For 74HC3G34: CMOS level
–
For 74HCT3G34: TTL level
•
Complies with JEDEC standard no. 7 A
•
Symmetrical output impedance
•
High noise immunity
•
Low-power dissipation
•
Balanced propagation delays
•
Multiple package options
•
ESD protection:
–
HBM JESD22-A114E exceeds 2000 V
–
MM JESD22-A115-A exceeds 200 V
•
Specified from -40 °C to +85 °C and -40 °C to +125 °C
3
Ordering information
Package
Temperature range
Name
TSSOP8
VSSOP8
Description
plastic thin shrink small outline package; 8 leads;
body width 3 mm; lead length 0.5 mm
plastic very thin shrink small outline package;
8 leads; body width 2.3 mm
Version
SOT505-2
SOT765-1
-40 °C to +125 °C
-40 °C to +125 °C
Table 1. Ordering information
Type number
74HC3G34DP
74HCT3G34DP
74HC3G34DC
74HCT3G34DC
Nexperia
74HC3G34; 74HCT3G34
Triple buffer gate
4
Marking
Marking code
H34
T34
P34
U34
[1]
Table 2. Marking
Type number
74HC3G34DP
74HCT3G34DP
74HC3G34DC
74HCT3G34DC
[1] The pin 1 indicator is located on the lower left corner of the device, below the marking code.
5
Functional diagram
1
1
2
3
1A
3Y
2A
1Y
3A
2Y
7
1
7
3
6
5
1
5
6
1
mna745
2
mna744
Figure 1. Logic symbol
Figure 2. IEC logic symbol
6
Pinning information
6.1 Pinning
74HC3G34
74HCT3G34
1A
3Y
2A
GND
1
2
3
4
001aae470
8
7
6
5
V
CC
1Y
3A
2Y
Figure 3. Pin configuration SOT505-2 (TSSOP8) and SOT765-1 (VSSOP8)
74HC_HCT3G34
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 7 — 11 June 2018
2 / 13
Nexperia
74HC3G34; 74HCT3G34
6.2 Pin description
Triple buffer gate
Table 3. Pin description
Symbol
1A, 2A, 3A
1Y, 2Y, 3Y
GND
V
CC
Pin
1, 3, 6
7, 5, 2
4
8
Description
data input
data output
ground (0 V)
supply voltage
7
Functional description
Table 4. Function table
H = HIGH voltage level; L = LOW voltage level.
Input
nA
L
H
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
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
Parameter
supply voltage
input clamping current
output clamping current
output current
quiescent supply current
ground current
storage temperature
total power dissipation
T
amb
= -40 °C to +125 °C
[2]
Conditions
V
I
< -0.5 V or V
I
> V
CC
+ 0.5 V
V
O
< -0.5 V or V
O
> V
CC
+ 0.5 V
V
O
= -0.5 V to (V
CC
+ 0.5 V)
[1]
[1]
Min
-0.5
-
-
-
-
-50
-65
-
Max
+7.0
±20
±20
±25
50
-
+150
300
Unit
V
mA
mA
mA
mA
mA
°C
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] 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.
74HC_HCT3G34
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 7 — 11 June 2018
3 / 13
Nexperia
74HC3G34; 74HCT3G34
Triple buffer gate
9
Recommended operating conditions
Table 6. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
CC
V
I
V
O
T
amb
Δt/ΔV
supply voltage
input voltage
output voltage
ambient temperature
input transition rise
and fall rate
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Conditions
Min
2.0
0
0
-40
-
-
-
74HC3G34
Typ
5.0
-
-
+25
-
1.67
-
Max
6.0
V
CC
V
CC
+125
625
139
83
Min
4.5
0
0
-40
-
-
-
74HCT3G34
Typ
5.0
-
-
+25
-
1.67
-
Max
5.5
V
CC
V
CC
+125
-
139
-
V
V
V
°C
ns/V
ns/V
ns/V
Unit
10 Static characteristics
Table 7. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol
74HC3G34
V
IH
HIGH-level input
voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
IL
LOW-level input
voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
OH
HIGH-level output
voltage
V
I
= V
IH
or V
IL
I
O
= -20 μA; V
CC
= 2.0 V
I
O
= -20 μA; V
CC
= 4.5 V
I
O
= -20 μA; V
CC
= 6.0 V
I
O
= -4.0 mA; V
CC
= 4.5 V
I
O
= -5.2 mA; V
CC
= 6.0 V
V
OL
LOW-level output
voltage
V
I
= V
IH
or V
IL
I
O
= 20 μA; V
CC
= 2.0 V
I
O
= 20 μA; V
CC
= 4.5 V
I
O
= 20 μA; V
CC
= 6.0 V
I
O
= 4.0 mA; V
CC
= 4.5 V
I
O
= 5.2 mA; V
CC
= 6.0 V
I
I
74HC_HCT3G34
Parameter
Conditions
-40 °C to +85 °C
Min
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
4.13
5.63
-
-
-
-
-
-
Typ
[1]
-40 °C to +125 °C
Min
1.5
3.15
4.2
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
-
Max
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
±1.0
Unit
Max
-
-
-
0.5
1.35
1.8
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33
±1.0
1.2
2.4
3.2
0.8
2.1
2.8
2.0
4.5
6.0
4.32
5.81
0
0
0
0.15
0.16
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
μA
input leakage current
V
I
= V
CC
or GND; V
CC
= 6.0 V
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 7 — 11 June 2018
4 / 13
Nexperia
74HC3G34; 74HCT3G34
Conditions
per input pin; V
I
= V
CC
or GND;
I
O
= 0 A; V
CC
= 6.0 V
-40 °C to +85 °C
Min
Typ
-
1.5
1.6
1.2
[1]
Triple buffer gate
Unit
μA
pF
V
V
Symbol
I
CC
C
I
V
IH
V
IL
V
OH
Parameter
supply current
input capacitance
HIGH-level input
voltage
LOW-level input
voltage
HIGH-level output
voltage
-40 °C to +125 °C
Min
-
-
2.0
-
Max
20
-
-
0.8
Max
10
-
-
0.8
-
-
74HCT3G34
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
V
I
= V
IH
or V
IL
I
O
= -20 μA; V
CC
= 4.5 V
I
O
= -4.0 mA; V
CC
= 4.5 V
V
OL
LOW-level output
voltage
V
I
= V
IH
or V
IL
I
O
= 20 μA; V
CC
= 4.5 V
I
O
= 4.0 mA; V
CC
= 4.5 V
I
I
I
CC
ΔI
CC
C
I
input leakage current
supply current
additional supply
current
input capacitance
V
I
= V
CC
or GND; V
CC
= 5.5 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
per input; V
CC
= 4.5 V to 5.5 V;
V
I
= V
CC
- 2.1 V; I
O
= 0 A
-
-
-
-
-
-
0
0.15
-
-
-
1.5
0.1
0.33
±1.0
10
375
-
-
-
-
-
-
-
0.1
0.4
±1.0
20
410
-
V
V
μA
μA
μA
pF
4.4
4.13
4.5
4.32
-
-
4.4
3.7
-
-
V
V
2.0
-
[1] All typical values are measured at T
amb
= 25 °C.
11 Dynamic characteristics
Table 8. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see
Figure 5.
Symbol Parameter
74HC3G34
t
pd
propagation delay nA to nY; see
Figure 4
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
t
t
transition time
nY; see
Figure 4
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
C
PD
power dissipation V
I
= GND to V
CC
capacitance
[4]
[3]
[2]
Conditions
-40 °C to +85 °C
Min
Typ
[1]
-40 °C to +125 °C Unit
Min
Max
Max
-
-
-
-
-
-
-
29
9
8
18
6
5
10
95
19
16
95
19
16
-
-
-
-
-
-
-
-
125
25
20
125
25
20
-
ns
ns
ns
ns
ns
ns
pF
74HC_HCT3G34
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 7 — 11 June 2018
5 / 13
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