74AHC1G4212
Rev. 3 — 25 April 2018
12-stage divider and oscillator
Product data sheet
1
General description
74AHC1G4212 is a 12-stage divider and oscillator. It consists of a chain of 12 flip-flops.
Each flip-flop divides the frequency of the previous flip-flop by two, consequently the
12
74AHC1G4212 counts up to 2 = 4096. The single inverting stage (X1 to X2) functions
as a crystal oscillator or an input buffer for an external oscillator. When used as a buffer
the output X2 should be left floating. The frequency of the output (Q) is the frequency
applied to X1 divided by 4096. The divider advances on the negative-going transition of
X1.
The X1 input is overvoltage tolerant. This feature allows the use of this device as a
voltage level translator in mixed voltage environments.
2
Features and benefits
•
•
•
•
•
Wide supply voltage range from 2.0 V to 5.5 V
Overvoltage tolerant inputs to 5.5 V
High noise immunity
CMOS low power dissipation
ESD protection:
–
HBM JESD22-A114F: exceeds 2000 V
–
CDM JESD22-C101E: exceeds 1000 V
•
Latch-up performance exceeds 100 mA per JESD 78 Class II
•
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3
Ordering information
Package
Temperature range
Name
TSSOP5
Description
plastic thin shrink small outline package;
5 leads; body width 1.25 mm
Version
SOT353-1
-40 °C to +125 °C
Table 1. Ordering information
Type number
74AHC1G4212GW
4
Marking
Marking
C2
[1]
Table 2. Marking codes
Type number
74AHC1G4212GW
[1] The pin 1 indicator is located on the lower left corner of the device, below the marking code.
Nexperia
12-stage divider and oscillator
74AHC1G4212
5
Functional diagram
X1
X2
12-STAGE
COUNTER
Q
1
2
4
aaa-022707
Figure 1. Logic symbol
X2
D
X1
CP
Q1
FF1
D
FF2
CP
Q2
FF12
D
CP
Q10
Q
aaa-022708
Figure 2. Logic diagram
6
Pinning information
6.1 Pinning
74AHC1G4212
X1
X2
GND
1
2
3
aaa-022709
5
V
CC
4
Q
Figure 3. Pin configuration SOT353-1
6.2 Pin description
Table 3. Pin description
Symbol
X1
X2
GND
Q
V
CC
Pin
1
2
3
4
5
Description
clock input/oscillator pin
oscillator pin
ground (0 V)
divider output
supply voltage
74AHC1G4212
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 3 — 25 April 2018
2 / 12
Nexperia
12-stage divider and oscillator
74AHC1G4212
7
Functional description
1
X1
Q
aaa-022711
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192 16384
Figure 4. Timing diagram
8
Limiting values
Table 4. 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
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
T
amb
= -40 °C to +125 °C
[2]
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
-
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For TSSOP5 package: above 87.5 °C the value of P
tot
derates linearly with 4.0 mW/K.
9
Recommended operating conditions
Table 5. 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
= 3.3 V ± 0.3 V
V
CC
= 5.0 V ± 0.5 V
Conditions
Min
2.0
0
0
-40
-
-
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
100
20
Unit
V
V
V
°C
ns/V
ns/V
74AHC1G4212
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 3 — 25 April 2018
3 / 12
Nexperia
12-stage divider and oscillator
74AHC1G4212
10 Static characteristics
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
IH
HIGH-level
input voltage
Conditions
Min
X1
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
IL
LOW-level
input voltage
X1
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
OH
HIGH-level
Q; V
I
= V
IH
or V
IL
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
X2; V
I
= V
IH
or V
IL
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
= -2.0 mA; V
CC
= 3.0 V
I
O
= -3.0 mA; V
CC
= 4.5 V
V
OL
LOW-level
Q; V
I
= V
IH
or V
IL
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
X2; V
I
= V
IH
or V
IL
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
= 2.0 mA; V
CC
= 3.0 V
I
O
= 3.0 mA; V
CC
= 4.5 V
I
I
input leakage
current
X1; V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
-
-
-
-
-
-
0
0
0
-
-
-
0.1
0.1
0.1
0.36
0.36
0.1
-
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
1.0
-
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
2.0
V
V
V
V
V
μA
1.9
2.9
4.4
2.58
3.94
-
-
-
-
-
2.0
3.0
4.5
-
-
0
0
0
-
-
-
-
-
-
-
0.1
0.1
0.1
0.36
0.36
1.9
2.9
4.4
2.48
3.8
-
-
-
-
-
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
V
V
V
V
V
V
V
V
V
V
-
-
-
1.9
2.9
4.4
2.58
3.94
-
-
-
2.0
3.0
4.5
-
-
0.3
0.6
1.1
-
-
-
-
-
-
-
-
1.9
2.9
4.4
2.48
3.8
0.3
0.6
1.1
-
-
-
-
-
-
-
-
1.9
2.9
4.4
2.40
3.70
0.3
0.6
1.1
-
-
-
-
-
V
V
V
V
V
V
V
V
1.7
2.4
4.4
-
-
-
-
-
-
1.7
2.4
4.4
-
-
-
1.7
2.4
4.4
-
-
-
V
V
V
25 °C
Typ
Max
-40 °C to +85 °C
Min
Max
-40 °C to +125 °C Unit
Min
Max
74AHC1G4212
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
Product data sheet
Rev. 3 — 25 April 2018
4 / 12
Nexperia
12-stage divider and oscillator
Symbol Parameter
I
CC
C
I
Conditions
Min
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
input
capacitance
X1
-
-
25 °C
Typ
-
3
Max
1.0
8
-40 °C to +85 °C
Min
-
-
Max
10
8
-40 °C to +125 °C Unit
Min
-
-
Max
40
8
μA
pF
74AHC1G4212
11 Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; t
r
= t
f
= ≤ 3.0 ns. For test circuit see
Figure 7.
For waveforms see
Figure 5
and
Figure 6.
Symbol Parameter
t
pd
propagation
delay
Conditions
Min
X1 to X2;
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF
C
L
= 50 pF
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF
C
L
= 50 pF
X1 to Q;
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF
C
L
= 50 pF
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF
C
L
= 50 pF
t
W
pulse width
X1 HIGH or LOW
V
CC
= 3.0 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
f
max
maximum
frequency
X1
V
CC
= 3.3 V
V
CC
= 5 V
C
PD
power
C
L
= 50 pF; f
i
= 1 MHz;
V
I
= GND to V
CC
dissipation
capacitance
V
CC
= 3.3 V
V
CC
= 5 V
[1]
[2]
[3]
[4]
[4]
[3]
[1]
[2]
[3]
[1]
[2]
25 °C
Typ
Max
-40 °C to +85 °C
Min
Max
-40 °C to +125 °C Unit
Min
Max
-
-
-
-
3
7
2
6
7
13
5
10
1
1
1
1
11
16
7
11
1
1
1
1
13
18
9
12
ns
ns
ns
ns
-
-
-
-
4
3
125
165
28
31
20
22
-
-
-
-
48
52
31
35
-
-
-
-
1
1
1
1
5
4
100
125
59
62
39
45
-
-
-
-
1
1
1
1
7
5
70
100
68
73
45
51
-
-
-
-
ns
ns
ns
ns
ns
ns
MHz
MHz
-
-
4
5
-
-
-
-
-
-
-
-
-
-
pF
pF
t
pd
is the same as t
PLH
and t
PHL
.
Typical values are measured at V
CC
= 3.3 V.
Typical values are measured at V
CC
= 5.0 V.
C
PD
is used to determine the dynamic power dissipation P
D
(μW).
2
2
P
D
= C
PD
x V
CC
x f
i
+ C
L
x V
CC
x f
i
/4096 where:
f
i
= input frequency in MHz; C
L
= output load capacitance in pF; V
CC
= supply voltage in Volt.
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2018. All rights reserved.
74AHC1G4212
Product data sheet
Rev. 3 — 25 April 2018
5 / 12
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