74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
Rev. 04 — 5 May 2009
Product data sheet
1. General description
74AHC3G14 and 74AHCT3G14 are high-speed Si-gate CMOS devices. They provide an
inverting buffer function with Schmitt trigger action. These devices are capable of
transforming slowly changing input signals into sharply defined, jitter-free output signals.
The AHC device has CMOS input switching levels and supply voltage range 2 V to 5.5 V.
The AHCT device has TTL input switching levels and supply voltage range 4.5 V to 5.5 V.
2. Features
I
Symmetrical output impedance
I
High noise immunity
I
ESD protection:
N
HBM JESD22-A114E exceeds 2000 V
N
MM JESD22-A115-A exceeds 200 V
N
CDM JESD22-C101C exceeds 1000 V
I
Low power dissipation
I
Balanced propagation delays
I
Multiple package options
I
Specified from
−40 °C
to +125
°C
3. Applications
I
Wave and pulse shaper for highly noisy environment
I
Astable multivibrator
I
Monostable multivibrator
NXP Semiconductors
74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
4. Ordering information
Table 1.
Ordering information
Package
Temperature range Name
74AHC3G14DP
74AHCT3G14DP
74AHC3G14DC
74AHCT3G14DC
74AHC3G14GD
74AHCT3G14GD
−40 °C
to +125
°C
XSON8U
−40 °C
to +125
°C
VSSOP8
−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
plastic very thin shrink small outline package; 8 leads; SOT765-1
body width 2.3 mm
plastic extremely thin small outline package; no leads; SOT996-2
8 terminals; UTLP based; body 3
×
2
×
0.5 mm
5. Marking
Table 2.
Marking codes
Marking code
[1]
A14
C14
A14
C14
A14
C14
Type number
74AHC3G14DP
74AHCT3G14DP
74AHC3G14DC
74AHCT3G14DC
74AHC3G14GD
74AHCT3G14GD
[1]
The pin 1 indicator is located on the lower left corner of the device, below the marking code.
6. Functional diagram
1A
1Y
3Y
3A
2A
2Y
A
001aah729
Y
mna025
001aah728
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
Fig 3.
Logic diagram
(one Schmitt trigger)
74AHC_AHCT3G14_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 5 May 2009
2 of 16
NXP Semiconductors
74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
7. Pinning information
7.1 Pinning
74AHC3G14
74AHCT3G14
1A
1
2
3
4
8
7
6
5
V
CC
1Y
3A
2Y
74AHC3G14
74AHCT3G14
1A
3Y
2A
GND
1
2
3
4
001aai259
3Y
8
7
6
5
V
CC
1Y
3A
2Y
2A
GND
001aai260
Transparent top view
Fig 4.
Pin configuration SOT505-2 (TSSOP8) and
SOT765-1 (VSSOP8)
Fig 5.
Pin configuration SOT996-2 (XSON8U)
7.2 Pin description
Table 3.
Symbol
1A, 2A, 3A
GND
1Y, 2Y, 3Y
V
CC
Pin description
Pin
1, 3, 6
4
7, 5, 2
8
Description
data input
ground (0 V)
data output
supply voltage
8. Functional description
Table 4.
Input nA
L
H
[1]
H = HIGH voltage level; L = LOW voltage level
Function table
[1]
Output nY
H
L
74AHC_AHCT3G14_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 5 May 2009
3 of 16
NXP Semiconductors
74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
9. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
CC
V
I
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
Min
−0.5
−0.5
Max
+7.0
+7.0
-
±20
±25
75
-
+150
250
Unit
V
V
mA
mA
mA
mA
mA
°C
mW
V
I
<
−0.5
V
V
O
<
−0.5
V or V
O
> V
CC
+ 0.5 V
−0.5
V < V
O
< V
CC
+ 0.5 V
[1]
−20
-
-
-
−75
−65
T
amb
=
−40 °C
to +125
°C
[2]
-
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For TSSOP8 package: above 55
°C
the value of P
tot
derates linearly at 2.5 mW/K.
For VSSOP8 package: above 110
°C
the value of P
tot
derates linearly at 8 mW/K.
For XSON8U packages: above 118
°C
the value of P
tot
derates linearly with 7.8 mW/K.
10. 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
supply voltage
input voltage
output voltage
ambient temperature
Conditions
Min
2.0
0
0
−40
74AHC3G14
Typ
5.0
-
-
+25
Max
5.5
5.5
V
CC
+125
4.5
0
0
−40
74AHCT3G14
Min
Typ
5.0
-
-
+25
Max
5.5
5.5
V
CC
+125
V
V
V
°C
Unit
11. Static characteristics
Table 7.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74AHC3G14
V
OH
HIGH-level
V
I
= V
T+
or V
T−
output voltage
I
O
=
−50 µA;
V
CC
= 2.0 V
I
O
=
−50 µA;
V
CC
= 3.0 V
I
O
=
−50 µA;
V
CC
= 4.5 V
I
O
=
−4.0
mA; V
CC
= 3.0 V
I
O
=
−8.0
mA; V
CC
= 4.5 V
1.9
2.9
4.4
2.58
3.94
2.0
3.0
4.5
-
-
-
-
-
-
-
1.9
2.9
4.4
2.48
3.8
-
-
-
-
-
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
V
V
V
V
V
Conditions
Min
25
°C
Typ
Max
−40 °C
to +85
°C −40 °C
to +125
°C
Unit
Min
Max
Min
Max
74AHC_AHCT3G14_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 5 May 2009
4 of 16
NXP Semiconductors
74AHC3G14; 74AHCT3G14
Inverting Schmitt trigger
Table 7.
Static characteristics
…continued
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
OL
Conditions
Min
LOW-level
V
I
= V
T+
or V
T−
output voltage
I
O
= 50
µA;
V
CC
= 2.0 V
I
O
= 50
µA;
V
CC
= 3.0 V
I
O
= 50
µA;
V
CC
= 4.5 V
I
O
= 4.0 mA; V
CC
= 3.0 V
I
O
= 8.0 mA; V
CC
= 4.5 V
I
I
I
CC
C
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
-
-
-
-
-
-
-
-
25
°C
Typ
0
0
0
-
-
-
-
1.5
Max
0.1
0.1
0.1
0.36
0.36
0.1
1.0
10
−40 °C
to +85
°C −40 °C
to +125
°C
Unit
Min
-
-
-
-
-
-
-
-
Max
0.1
0.1
0.1
0.44
0.44
1.0
10
10
Min
-
-
-
-
-
-
-
-
Max
0.1
0.1
0.1
0.55
0.55
2.0
40
10
V
V
V
V
V
µA
µA
pF
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
input
capacitance
HIGH-level
V
I
= V
T+
or V
T−
; V
CC
= 4.5 V
output voltage
I
O
=
−50 µA
I
O
=
−8.0
mA
LOW-level
V
I
= V
T+
or V
T−
; V
CC
= 4.5 V
output voltage
I
O
= 50
µA
I
O
= 8.0 mA
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
74AHCT3G14
V
OH
4.4
3.94
-
-
-
-
-
4.5
-
0
-
-
-
-
-
-
0.1
0.36
0.1
1.0
1.35
4.4
3.8
-
-
-
-
-
-
-
0.1
0.44
1.0
10
1.5
4.4
3.70
-
-
-
-
-
-
-
0.1
0.55
2.0
40
1.5
V
V
V
V
µA
µA
mA
V
OL
I
I
I
CC
∆I
CC
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
additional
per input pin; V
I
= 3.4 V;
supply current other inputs at V
CC
or GND;
I
O
= 0 A; V
CC
= 5.5 V
input
capacitance
C
I
-
1.5
10
-
10
-
10
pF
74AHC_AHCT3G14_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 5 May 2009
5 of 16
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