74AHC1G4212
12-stage divider and oscillator
Rev. 4 — 27 June 2019
Product data sheet
1. General description
74AHC1G4212 is a 12-stage divider and oscillator. It consists of a chain of 12 flip-flops. Each flipflop divides the frequency of the previous flip-flop by two, consequently the 74AHC1G4212 counts
12
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
Table 1. Ordering information
Type number
Package
74AHC1G4212GW
Temperature range
Name
Description
Version
-40 °C to +125 °C
TSSOP5
plastic thin shrink small outline package;
5 leads; body width 1.25 mm
SOT353-1
4. Marking
Table 2. Marking codes
Type number
Marking[1]
74AHC1G4212GW
C2
[1]
The pin 1 indicator is located on the lower left corner of the device, below the marking code.
74AHC1G4212
Nexperia
12-stage divider and oscillator
5. Functional diagram
X1
1
X2
2
Q
4
12-STAGE
COUNTER
aaa-022707
Fig. 1.
Logic symbol
X2
FF1
X1
D
D
FF2
FF12
D
CP
CP
CP
Q1
Q2
Q10
Q
aaa-022708
Fig. 2.
Logic diagram
6. Pinning information
6.1. Pinning
74AHC1G4212
X1
1
X2
2
GND
3
5
VCC
4
Q
aaa-022709
Fig. 3.
Pin configuration SOT353-1
6.2. Pin description
Table 3. Pin description
Symbol
Pin
Description
X1
1
clock input/oscillator pin
X2
2
oscillator pin
GND
3
ground (0 V)
Q
4
divider output
VCC
5
supply voltage
74AHC1G4212
Product data sheet
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2 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
7. Functional description
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192 12288
X1
Q
aaa-022711
Fig. 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
Parameter
Min
Max
Unit
VCC
supply voltage
-0.5
+7.0
V
VI
input voltage
-0.5
+7.0
V
IIK
input clamping current
VI < -0.5 V
-20
-
mA
IOK
output clamping current
VO < -0.5 V or VO > VCC + 0.5 V
-
±20
mA
IO
output current
-0.5 V < VO < VCC + 0.5 V
-
±25
mA
ICC
supply current
-
75
mA
IGND
ground current
-75
-
mA
Tstg
storage temperature
-65
+150
°C
Ptot
total power dissipation
-
250
mW
[1]
[2]
Conditions
[1]
Tamb = -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 SOT353-1 (TSSOP5) package: above 74 °C the value of Ptot derates linearly with 3.3 mW/K.
9. Recommended operating conditions
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
VCC
supply voltage
VI
input voltage
VO
output voltage
Tamb
ambient temperature
Δt/ΔV
input transition rise and fall
rate
74AHC1G4212
Product data sheet
Conditions
Min
Typ
Max
Unit
2.0
5.0
5.5
V
0
-
5.5
V
0
-
VCC
V
-40
+25
+125
°C
VCC = 3.3 V ± 0.3 V
-
-
100
ns/V
VCC = 5.0 V ± 0.5 V
-
-
20
ns/V
All information provided in this document is subject to legal disclaimers.
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3 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
10. Static characteristics
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
VIH
VIL
VOH
Conditions
25 °C
-40 °C to +85 °C
-40 °C to +125 °C Unit
Min
Typ
Max
Min
Max
Min
Max
VCC = 2.0 V
1.7
-
-
1.7
-
1.7
-
V
VCC = 3.0 V
2.4
-
-
2.4
-
2.4
-
V
VCC = 5.5 V
4.4
-
-
4.4
-
4.4
-
V
VCC = 2.0 V
-
-
0.3
-
0.3
-
0.3
V
VCC = 3.0 V
-
-
0.6
-
0.6
-
0.6
V
VCC = 5.5 V
-
-
1.1
-
1.1
-
1.1
V
Q; VI = VIH or VIL
HIGH-level
output voltage
IO = -50 μA; VCC = 2.0 V
1.9
2.0
-
1.9
-
1.9
-
V
IO = -50 μA; VCC = 3.0 V
2.9
3.0
-
2.9
-
2.9
-
V
IO = -50 μA; VCC = 4.5 V
4.4
4.5
-
4.4
-
4.4
-
V
IO = -4.0 mA; VCC = 3.0 V
2.58
-
-
2.48
-
2.40
-
V
IO = -8.0 mA; VCC = 4.5 V
3.94
-
-
3.8
-
3.70
-
V
IO = -50 μA; VCC = 2.0 V
1.9
2.0
-
1.9
-
1.9
-
V
IO = -50 μA; VCC = 3.0 V
2.9
3.0
-
2.9
-
2.9
-
V
IO = -50 μA; VCC = 4.5 V
4.4
4.5
-
4.4
-
4.4
-
V
IO = -2.0 mA; VCC = 3.0 V
2.58
-
-
2.48
-
2.40
-
V
IO = -3.0 mA; VCC = 4.5 V
3.94
-
-
3.8
-
3.70
-
V
Q; VI = VIH or VIL
LOW-level
output voltage
IO = 50 μA; VCC = 2.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 50 μA; VCC = 3.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 50 μA; VCC = 4.5 V
-
0
0.1
-
0.1
-
0.1
V
IO = 4.0 mA; VCC = 3.0 V
-
-
0.36
-
0.44
-
0.55
V
IO = 8.0 mA; VCC = 4.5 V
-
-
0.36
-
0.44
-
0.55
V
IO = 50 μA; VCC = 2.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 50 μA; VCC = 3.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 50 μA; VCC = 4.5 V
-
0
0.1
-
0.1
-
0.1
V
IO = 2.0 mA; VCC = 3.0 V
-
-
0.36
-
0.44
-
0.55
V
IO = 3.0 mA; VCC = 4.5 V
-
-
0.36
-
0.44
-
0.55
V
-
-
0.1
-
1.0
-
2.0
μA
HIGH-level
input voltage
LOW-level
input voltage
X1
X1
X2; VI = VIH or VIL
VOL
X2; VI = VIH or VIL
II
input leakage
current
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
1.0
-
10
-
40
μA
CI
input
capacitance
-
3
8
-
8
-
8
pF
74AHC1G4212
Product data sheet
X1; VI = 5.5 V or GND;
VCC = 0 V to 5.5 V
X1
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74AHC1G4212
Nexperia
12-stage divider and oscillator
11. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; tr = tf = ≤ 3.0 ns. For test circuit see Fig. 7. For waveforms see Fig. 5 and Fig. 6.
Symbol Parameter
tpd
propagation
delay
Conditions
25 °C
Typ
Max
Min
Max
Min
Max
CL = 15 pF
-
3
7
1
11
1
13
ns
CL = 50 pF
-
7
13
1
16
1
18
ns
-
2
5
1
7
1
9
ns
-
6
10
1
11
1
12
ns
CL = 15 pF
-
28
48
1
59
1
68
ns
CL = 50 pF
-
31
52
1
62
1
73
ns
CL = 15 pF
-
20
31
1
39
1
45
ns
CL = 50 pF
-
22
35
1
45
1
51
ns
VCC = 3.0 V to 3.6 V
4
-
-
5
-
7
-
ns
VCC = 4.5 V to 5.5 V
3
-
-
4
-
5
-
ns
VCC = 3.3 V
125
-
-
100
-
70
-
MHz
VCC = 5 V
165
-
-
125
-
100
-
MHz
-
4
-
-
-
-
-
pF
-
5
-
-
-
-
-
pF
X1 to X2;
[1]
VCC = 3.0 V to 3.6 V
[2]
[3]
CL = 15 pF
CL = 50 pF
X1 to Q;
[1]
VCC = 3.0 V to 3.6 V
[2]
VCC = 4.5 V to 5.5 V
pulse width
fmax
maximum
frequency
X1
VCC = 5 V
[1]
[2]
[3]
[4]
[3]
X1 HIGH or LOW
CL = 50 pF; fi = 1 MHz;
power
VI = GND to VCC
dissipation
capacitance
VCC = 3.3 V
CPD
-40 °C to +125 °C Unit
Min
VCC = 4.5 V to 5.5 V
tW
-40 °C to +85 °C
[4]
tpd is the same as tPLH and tPHL.
Typical values are measured at VCC = 3.3 V.
Typical values are measured at VCC = 5.0 V.
CPD is used to determine the dynamic power dissipation PD (μW).
2
2
PD = CPD x VCC x fi + CL x VCC x fi/4096 where:
fi = input frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in Volt.
74AHC1G4212
Product data sheet
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Rev. 4 — 27 June 2019
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Nexperia B.V. 2019. All rights reserved
5 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
11.1. Waveforms and test circuit
VI
1/f max
VI
VM
X1 input
X1 input
GND
tW
GND
tPHL
VOH
VM
VM
Q output
VOL
VOL
aaa-022703
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that
occur with the output load.
Fig. 5.
tPLH
tPHL
tPLH
VOH
X2 output
VM
Input X1 to output X2 propagation delay times
aaa-022704
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that
occur with the output load.
Fig. 6.
Input X1 to output Q propagation delay times
Table 8. Measurement points
Inputs
Output
VI
VM
VM
GND to VCC
0.5 × VCC
0.5 × VCC
VCC
PULSE
GENERATOR
VI
DUT
VO
RT
CL
mna101
Test data is given in Table 7. Definitions for test circuit:
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
Fig. 7.
Test circuit for measuring switching times
74AHC1G4212
Product data sheet
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74AHC1G4212
Nexperia
12-stage divider and oscillator
12. Crystal oscillator
12.1. Typical crystal oscillator circuit
A typical crystal oscillator schematic is shown in Fig. 8. R1 is the power limiting resistor, its value
depends on the frequency and required stability against changes in VCC or average ICC. For
starting and maintaining oscillation a minimum transconductance is necessary, so R1 should not be
too large. A practical value for R1 is 2.2 kΩ.
74AHC1G4212
X1 1
Rbias = 560 kΩ
2
X2
VCC
Rbias
0.47 µF
100 kΩ to 1 MΩ
R1
2.2 kΩ
C1
22 pF to 37 pF
output
100 µF
VI
(f = 1 kHz)
A IO
GND
C2
100 pF
mna050
gfs = ΔIO / ΔVI at VO is constant.
See also Fig. 10.
aaa-022712
Fig. 8.
input
External component connection for a crystal
oscillator
Fig. 9.
Test set-up for measuring forward
transconductance
aaa-022706
20
gfs
(mA/V)
(1)
16
(2)
12
(3)
8
4
0
1
2
3
4
5
VCC (V)
6
Tamb = 25 °C.
(1) Maximum.
(2) Typical.
(3) Minimum.
Fig. 10. Typical forward transconductance as function of the supply voltage
74AHC1G4212
Product data sheet
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Nexperia B.V. 2019. All rights reserved
7 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
13. Package outline
TSSOP5: plastic thin shrink small outline package; 5 leads; body width 1.25 mm
D
E
SOT353-1
A
X
c
y
HE
v M A
Z
5
4
A2
A
(A3)
A1
θ
1
Lp
3
e
e1
L
w M
bp
detail X
0
1.5
3 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D(1)
E(1)
e
e1
HE
L
Lp
v
w
y
Z(1)
θ
mm
1.1
0.1
0
1.0
0.8
0.15
0.30
0.15
0.25
0.08
2.25
1.85
1.35
1.15
0.65
1.3
2.25
2.0
0.425
0.46
0.21
0.3
0.1
0.1
0.60
0.15
7°
0°
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
OUTLINE
VERSION
SOT353-1
REFERENCES
IEC
JEDEC
JEITA
MO-203
SC-88A
EUROPEAN
PROJECTION
ISSUE DATE
00-09-01
03-02-19
Fig. 11. Package outline SOT353-1 (TSSOP5)
74AHC1G4212
Product data sheet
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8 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
14. Abbreviations
Table 9. Abbreviations
Acronym
Description
CDM
Charged Device Model
DUT
Device Under Test
ESD
ElectroStatic Discharge
HBM
Human Body Model
MM
Machine Model
15. Revision history
Table 10. Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
74AHC1G4212 v.4
20190627
Product data sheet
-
74AHC1G4212 v.3
Modifications:
•
74AHC1G4212 v.3
20180425
-
74AHC1G4212 v.2
Modifications:
•
•
Typo corrected in Fig. 4.
The format of this data sheet has been redesigned to comply with the identity guidelines of
Nexperia.
Legal texts have been adapted to the new company name where appropriate.
74AHC1G4212 v.2
20161026
Modifications:
•
74AHC1G4212 v.1
20160415
74AHC1G4212
Product data sheet
Product data sheet
Product data sheet
-
74AHC1G4212 v.1
-
-
Type number 74AHC1G4212GM removed.
Product data sheet
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Nexperia B.V. 2019. All rights reserved
9 / 11
74AHC1G4212
Nexperia
12-stage divider and oscillator
16. Legal information
injury, death or severe property or environmental damage. Nexperia and its
suppliers accept no liability for inclusion and/or use of Nexperia products in
such equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
Data sheet status
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Document status
[1][2]
Product
status [3]
Definition
Objective [short]
data sheet
Development
This document contains data from
the objective specification for
product development.
Preliminary [short]
data sheet
Qualification
This document contains data from
the preliminary specification.
Product [short]
data sheet
Production
This document contains the product
specification.
[1]
[2]
[3]
Please consult the most recently issued document before initiating or
completing a design.
The term 'short data sheet' is explained in section "Definitions".
The product status of device(s) described in this document may have
changed since this document was published and may differ in case of
multiple devices. The latest product status information is available on
the internet at https://www.nexperia.com.
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modifications or additions. Nexperia does not give any representations or
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detailed and full information. For detailed and full information see the relevant
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data sheet shall define the specification of the product as agreed between
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74AHC1G4212
Product data sheet
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no representation
or warranty that such applications will be suitable for the specified use
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Customers are responsible for the design and operation of their applications
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Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those
given in the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
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Rev. 4 — 27 June 2019
©
Nexperia B.V. 2019. All rights reserved
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74AHC1G4212
Nexperia
12-stage divider and oscillator
Contents
1. General description...................................................... 1
2. Features and benefits.................................................. 1
3. Ordering information....................................................1
4. Marking.......................................................................... 1
5. Functional diagram.......................................................2
6. Pinning information......................................................2
6.1. Pinning.........................................................................2
6.2. Pin description............................................................. 2
7. Functional description................................................. 3
8. Limiting values............................................................. 3
9. Recommended operating conditions..........................3
10. Static characteristics..................................................4
11. Dynamic characteristics.............................................5
11.1. Waveforms and test circuit........................................ 6
12. Crystal oscillator........................................................ 7
12.1. Typical crystal oscillator circuit.................................. 7
13. Package outline.......................................................... 8
14. Abbreviations.............................................................. 9
15. Revision history..........................................................9
16. Legal information......................................................10
©
Nexperia B.V. 2019. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 27 June 2019
74AHC1G4212
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 27 June 2019
©
Nexperia B.V. 2019. All rights reserved
11 / 11
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