74AHC1G79; 74AHCT1G79
Single D-type flip-flop; positive-edge trigger
Rev. 6 — 23 September 2014
Product data sheet
1. General description
74AHC1G79 and 74AHCT1G79 are high-speed Si-gate CMOS devices. They provide a
single positive-edge triggered D-type flip-flop.
Information on the data input is transferred to the Q output on the LOW-to-HIGH transition
of the clock pulse. The D input must be stable one set-up time prior to the LOW-to-HIGH
clock transition for predictable operation.
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 and benefits
Symmetrical output impedance
High noise immunity
Low power dissipation
Balanced propagation delays
SOT353-1 and SOT753 package options
ESD protection:
HBM JESD22-A114F: exceeds 2000 V
MM JESD22-A115-A: exceeds 200 V
CDM JESD22-C101C: exceeds 1000 V
Specified from
40 C
to +125
C
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74AHC1G79GW
74AHCT1G79GW
74AHC1G79GV
74AHCT1G79GV
40 C
to +125
C
SC-74A
40 C
to +125
C
Name
TSSOP5
Description
plastic thin shrink small outline package; 5 leads;
body width 1.25 mm
plastic surface-mounted package; 5 leads
Version
SOT353-1
SOT753
Type number
NXP Semiconductors
74AHC1G79; 74AHCT1G79
Single D-type flip-flop; positive-edge trigger
4. Marking
Table 2.
Marking codes
Marking
[1]
AP
A79
CP
C79
Type number
74AHC1G79GW
74AHC1G79GV
74AHCT1G79GW
74AHCT1G79GV
[1]
The pin 1 indicator is located on the lower left corner of the device, below the marking code.
5. Functional diagram
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
Fig 3.
Logic diagram
74AHC_AHCT1G79
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 6 — 23 September 2014
2 of 13
NXP Semiconductors
74AHC1G79; 74AHCT1G79
Single D-type flip-flop; positive-edge trigger
6. Pinning information
6.1 Pinning
Fig 4.
Pin configuration
6.2 Pin description
Table 3.
Symbol
D
CP
GND
Q
V
CC
Pin description
Pin
1
2
3
4
5
Description
data input
clock pulse input
ground (0 V)
data output
supply voltage
7. Functional description
Table 4.
Inputs
CP
L
[1]
H = HIGH voltage level;
L = LOW voltage level;
= LOW-to-HIGH CP transition;
X = don’t care;
Q + 1 = state after the next LOW-to-HIGH CP transition.
Function table
[1]
Output
D
L
H
X
Q+1
L
H
Q
74AHC_AHCT1G79
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 6 — 23 September 2014
3 of 13
NXP Semiconductors
74AHC1G79; 74AHCT1G79
Single D-type flip-flop; positive-edge trigger
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
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 both TSSOP5 and SC-74A packages: above 87.5
C
the value of P
tot
derates linearly with 4.0 mW/K.
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
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise
and fall rate
V
CC
= 3.3 V
0.3 V
V
CC
= 5.0 V
0.5 V
Conditions
Min
2.0
0
0
40
-
-
74AHC1G79
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
100
20
4.5
0
0
40
-
-
74AHCT1G79
Min
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
-
20
V
V
V
C
ns/V
ns/V
Unit
10. Static characteristics
Table 7.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
For type 74AHC1G79
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
1.5
2.1
3.85
-
-
-
-
-
-
-
-
-
-
-
-
0.5
0.9
1.65
1.5
2.1
3.85
-
-
-
-
-
-
0.5
0.9
1.65
1.5
2.1
3.85
-
-
-
-
-
-
0.5
0.9
1.65
V
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_AHCT1G79
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 6 — 23 September 2014
4 of 13
NXP Semiconductors
74AHC1G79; 74AHCT1G79
Single D-type flip-flop; positive-edge trigger
Table 7.
Static characteristics
…continued
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
OH
Conditions
Min
HIGH-level
V
I
= V
IH
or V
IL
output voltage
I
O
=
50 A;
V
CC
= 2.0 V
I
O
=
50 A;
V
CC
= 3.0 V
I
O
=
50 A;
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
V
OL
LOW-level
V
I
= V
IH
or V
IL
output voltage
I
O
= 50
A;
V
CC
= 2.0 V
I
O
= 50
A;
V
CC
= 3.0 V
I
O
= 50
A;
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
1.9
2.9
4.4
2.58
3.94
-
-
-
-
-
-
-
-
25
C
Typ
2.0
3.0
4.5
-
-
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
1.9
2.9
4.4
2.48
3.8
-
-
-
-
-
-
-
-
Max
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
1.0
10
10
Min
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
-
-
-
Max
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
2.0
40
10
V
V
V
V
V
V
V
V
V
V
A
A
pF
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
input
capacitance
HIGH-level
input voltage
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
For type 74AHCT1G79
V
IH
V
IL
V
OH
2.0
-
-
-
-
0.8
2.0
-
-
0.8
2.0
-
-
0.8
V
V
HIGH-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
=
50 A
I
O
=
8.0
mA
LOW-level
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
output voltage
I
O
= 50
A
I
O
= 8.0 mA
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
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
A
A
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_AHCT1G79
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 6 — 23 September 2014
5 of 13
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