Page 1
DATA SH EET
Product specification
Supersedes data of December 1990
File under Integrated Circuits, IC06
1998 Jun 10
INTEGRATED CIRCUITS
74HC/HCT112
Dual JK flip-flop with set and reset;
negative-edge trigger
For a complete data sheet, please also download:
•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
Page 2
1998 Jun 10 2
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
FEATURES
• Asynchronous set and reset
• Output capability: standard
• ICC category: flip-flops
GENERAL DESCRIPTION
The 74HC/HCT112 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT112 are dual negative-edge triggered
JK-type flip-flops featuring individual nJ, nK, clock (n
CP),
set (nSD) and reset (nRD) inputs.
The set and reset inputs, when LOW, set or reset the
outputs as shown in the function table regardless of the
levels at the other inputs.
A HIGH level at the clock (n
CP) input enables the nJ and
nK inputs and data will be accepted. The nJ and nK inputs
control the state changes of the flip-flops as shown in the
function table. The nJ and nK inputs must be stable one
set-up time prior to the HIGH-to-LOW clock transition for
predictable operation.
Output state changes are initiated by the HIGH-to-LOW
transition of nCP.
Schmitt-trigger action in the clock input makes the circuit
highly tolerant to slower clock rise and fall times.
QUICK REFERENCE DATA
GND = 0 V; T
amb
=25°C; tr=tf= 6 ns
Notes
1. C
PD
is used to determine the dynamic power dissipation (PD in µW):
PD=CPD× V
CC
2
× fi+∑(CL× V
CC
2
× fo) where:
fi= input frequency in MHz
fo= output frequency in MHz
∑ (CL× V
CC
2
× fo) = sum of outputs
CL= output load capacitance in pF
VCC= supply voltage in V
2. For HC the condition is VI= GND to V
CC
For HCT the condition is VI= GND to VCC− 1.5 V
SYMBOL PARAMETER CONDITIONS
TYPICAL
UNIT
HC HCT
t
PHL
/ t
PLH
propagation delay CL= 15 pF; VCC=5 V
n
CP to nQ, nQ 1719ns
n
S
D
to nQ, nQ 1515ns
n
R
D
to nQ, nQ 1819ns
f
max
maximum clock frequency 66 70 MHz
C
I
input capacitance 3.5 3.5 pF
C
PD
power dissipation capacitance per flip-flop notes 1 and 2 27 30 pF
Page 3
1998 Jun 10 3
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
ORDERING INFORMATION
PIN DESCRIPTION
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
74HC112D;
74HCT112D
SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
74HC112DB;
74HCT112DB
SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1
74HC112N;
74HCT112N
DIP16 plastic dual in-line package; 16 leads (300 mil); long body SOT38-1
74HC112PW;
74HCT112PW
TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
PIN NO. SYMBOL NAME AND FUNCTION
1, 13 1
CP, 2CP clock input (HIGH-to-LOW, edge triggered)
2, 12 1K, 2K data inputs; flip-flops 1 and 2
3, 11 1J, 2J data inputs; flip-flops 1 and 2
4, 10 1
SD, 2S
D
set inputs (active LOW)
5, 9 1Q, 2Q true flip-flop outputs
6, 7 1
Q, 2Q complement flip-flop outputs
8 GND ground (0 V)
15, 14 1
RD, 2R
D
reset inputs (active LOW)
16 V
CC
positive supply voltage
Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.
Page 4
1998 Jun 10 4
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
Fig.4 Functional diagram.
FUNCTION TABLE
Note
1. If n
SD and nRD simultaneously go from LOW to HIGH, the output states will
be unpredictable.
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the HIGH-to-LOW CP
transition
L = LOW voltage level
l = LOW voltage level one set-up time prior to the HIGH-to-LOW CP
transition
q = lower case letters indicate the state of the referenced output one set-up
time prior to the HIGH-to-LOW CP transition
X = don’t care
↓ = HIGH-to-LOW CP transition
OPERATING MODE
INPUTS OUTPUTS
n
SDnRDnCP nJ nK nQ nQ
asynchronous set L H X X X H L
asynchronous reset H L X X X L H
undetermined L L X X X H L
toggle H H ↓ hh
qq
load “0” (reset) H H ↓ lh L H
load “1” (set) H H ↓ hl H L
hold “no change” H H ↓ ll q
q
Fig.5 Logic diagram (one flip-flop).
Page 5
1998 Jun 10 5
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
ICCcategory: flip-flops
Page 6
1998 Jun 10 6
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r=tf
= 6 ns; CL= 50 pF
SYMBOL PARAMETER
T
amb
(°C) TEST CONDITIONS
74HC
UNIT
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
nCP to nQ
55 175 220 265
ns
2.0
Fig.620 35 44 53 4.5
16 30 37 45 6.0
t
PHL
/ t
PLH
propagation delay
nCP to nQ
55 175 220 265
ns
2.0
Fig.620 35 44 53 4.5
16 30 37 45 6.0
t
PHL
/ t
PLH
propagation delay
nRD to nQ, nQ
58 180 225 270
ns
2.0
Fig.721 36 45 54 4.5
17 31 38 46 6.0
t
PHL
/ t
PLH
propagation delay
nSD to nQ, nQ
50 155 295 235
ns
2.0
Fig.718 31 39 47 4.5
14 26 33 40 6.0
t
THL
/ t
TLH
output transition time
19 75 95 110
ns
2.0
Fig.67 15 19 22 4.5
6 13 16 19 6.0
t
W
clock pulse width
HIGH or LOW
80 22 100 120
ns
2.0
Fig.616 8 20 24 4.5
14 6 17 20 6.0
t
W
set or reset pulse width
LOW
80 22 100 120
ns
2.0
Fig.716 8 20 24 4.5
14 6 17 20 6.0
t
rem
removal time
nRD to nCP
80 22 125 150
ns
2.0
Fig.716 8 25 30 4.5
14 6 21 26 6.0
t
rem
removal time
nSD to nCP
80 −19 100 120
ns
2.0
Fig.716 −7 20 24 4.5
14 −6 17 20 6.0
t
su
set-up time
nJ, nK to nCP
80 19 100 120
ns
2.0
Fig.616 7 20 24 4.5
14 6 17 20 6.0
t
h
hold time
nJ, nK to nCP
0 −11 0 0
ns
2.0
Fig.60 −4 0 0 4.5
0 −3 0 0 6.0
f
max
maximum clock pulse
frequency
6 20 4.8 4.0
MHz
2.0
Fig.630 60 24 20 4.5
35 71 28 24 6.0
Page 7
1998 Jun 10 7
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
ICCcategory: flip-flops
Note to HCT types
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT UNIT LOAD COEFFICIENT
1
SD, 2S
D
0.5
1K, 2K 0.6
1
RD, 2R
D
0.65
1J, 2J 1
1
CP, 2CP 1
Page 8
1998 Jun 10 8
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r=tf
= 6 ns; CL= 50 pF
SYMBOL PARAMETER
T
amb
(°C) TEST CONDITIONS
74HCT
UNIT
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
nCP to nQ
21 35 44 53 ns 4.5 Fig.6
t
PHL
/ t
PLH
propagation delay
nCP to nQ
23 40 50 60 ns 4.5 Fig.6
t
PHL
/ t
PLH
propagation delay
nRD to nQ, nQ
22 37 46 56 ns 4.5 Fig.7
t
PHL
/ t
PLH
propagation delay
nSD to nQ, nQ
18 32 40 48 ns 4.5 Fig.7
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Fig.6
t
W
clock pulse width
HIGH or LOW
16 8 20 24 ns 4.5 Fig.6
t
W
set or reset pulse width
LOW
18 10 23 27 ns 4.5 Fig.7
t
rem
removal time
nRD to nCP
20 11 25 30 ns 4.5 Fig.7
t
rem
removal time
nSD to nCP
20 −8 25 30 ns 4.5 Fig.7
t
su
set-up time
nJ, nK to nCP
16 7 20 24 ns 4.5 Fig.6
t
h
hold time
nJ, nK to nCP
0 −7 0 0 ns 4.5 Fig.6
f
max
maximum clock pulse
frequency
30 64 24 20 MHz 4.5 Fig.6
Page 9
1998 Jun 10 9
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
AC WAVEFORMS
Fig.6 Waveforms showing the clock (nCP) to output (nQ, nQ) propagation delays, the clock pulse width,
the nJ, nK to nCP set-up times, the nCP to nJ, nK hold times, the output transition times and the maximum
clock pulse frequency.
The shaded areas indicate when the input is permitted to
change for predictable output performance.
(1) HC : VM= 50%; VI= GND to VCC.
HCT: V
M
= 1.3 V; VI= GND to 3 V.
handbook, full pagewidth
MBK218
V
M
(1)
nCP INPUT
nSD INPUT
nRD INPUT
nQ OUTPUT
nQ OUTPUT
V
M
(1)
V
M
(1)
V
M
(1)
V
M
(1)
t
W
t
rem
t
rem
t
W
t
PHL
t
PLH
t
PLH
t
PHL
Fig.7 Waveforms showing the set (nSD) and reset (nRD) input to output (nQ, nQ) propagation delays, the set
and reset pulse width and the nRD and nSD to nCP removal time.
(1) HC : VM= 50%; VI= GND to VCC.
HCT: V
M
= 1.3 V; VI= GND to 3 V.
Page 10
1998 Jun 10 10
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
PACKAGE OUTLINES
X
w M
θ
A
A
1
A
2
b
p
D
H
E
L
p
Q
detail X
E
Z
e
c
L
v M
A
(A )
3
A
8
9
1
16
y
pin 1 index
UNIT
A
max.
A1A2A
3
b
p
cD
(1)E(1) (1)
eHELLpQZywv θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
inches
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
10.0
9.8
4.0
3.8
1.27
6.2
5.8
0.7
0.6
0.7
0.3
8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
1.0
0.4
SOT109-1
95-01-23
97-05-22
076E07S MS-012AC
0.069
0.010
0.004
0.057
0.049
0.01
0.019
0.014
0.0100
0.0075
0.39
0.38
0.16
0.15
0.050
1.05
0.041
0.244
0.228
0.028
0.020
0.028
0.012
0.01
0.25
0.01 0.004
0.039
0.016
0 2.5 5 mm
scale
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
Page 11
1998 Jun 10 11
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
UNIT A1A2A3b
p
cD
(1)E(1)
eHELLpQZywv θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
0.21
0.05
1.80
1.65
0.25
0.38
0.25
0.20
0.09
6.4
6.0
5.4
5.2
0.65 1.25
7.9
7.6
1.03
0.63
0.9
0.7
1.00
0.55
8
0
o
o
0.130.2 0.1
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT338-1
94-01-14
95-02-04
(1)
w M
b
p
D
H
E
E
Z
e
c
v M
A
X
A
y
1
8
16
9
θ
A
A
1
A
2
L
p
Q
detail X
L
(A )
3
MO-150AC
pin 1 index
0 2.5 5 mm
scale
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
A
max.
2.0
Page 12
1998 Jun 10 12
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
UNIT
A
max.
1 2
b
1
cEe M
H
L
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT38-1
92-10-02
95-01-19
A
min.
A
max.
b
max.
w
M
E
e
1
1.40
1.14
0.055
0.045
0.53
0.38
0.32
0.23
21.8
21.4
0.86
0.84
6.48
6.20
0.26
0.24
3.9
3.4
0.15
0.13
0.2542.54 7.62
0.30
8.25
7.80
0.32
0.31
9.5
8.3
0.37
0.33
2.2
0.087
4.7 0.51 3.7
0.15
0.021
0.015
0.013
0.009
0.010.100.0200.19
050G09 MO-001AE
M
H
c
(e )
1
M
E
A
L
seating plane
A
1
w M
b
1
e
D
A
2
Z
16
1
9
8
b
E
pin 1 index
0 5 10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
(1) (1)
D
(1)
Z
DIP16: plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
Page 13
1998 Jun 10 13
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
UNIT A1A2A3b
p
cD
(1)E(2) (1)
eHELLpQZywv θ
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC JEDEC EIAJ
mm
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
5.1
4.9
4.5
4.3
0.65
6.6
6.2
0.4
0.3
0.40
0.06
8
0
o
o
0.13 0.10.21.0
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT403-1 MO-153
94-07-12
95-04-04
w M
b
p
D
Z
e
0.25
18
16
9
θ
A
A
1
A
2
L
p
Q
detail X
L
(A )
3
H
E
E
c
v M
A
X
A
y
0 2.5 5 mm
scale
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
A
max.
1.10
pin 1 index
Page 14
1998 Jun 10 14
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“Data Handbook IC26; Integrated Circuit Packages”
(order code 9398 652 90011).
DIP
S
OLDERING BY DIPPING OR BY WAVE
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg max
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
R
EPAIRING SOLDERED JOINTS
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
SO, SSOP and TSSOP
REFLOW SOLDERING
Reflow soldering techniques are suitable for all SO, SSOP
and TSSOP packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method.
Typical reflow temperatures range from 215 to 250 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
W
AVE SOLDERING
Wave soldering can be used for all SO packages. Wave
soldering is not recommended for SSOP and TSSOP
packages, because of the likelihood of solder bridging due
to closely-spaced leads and the possibility of incomplete
solder penetration in multi-lead devices.
If wave soldering is used - and cannot be avoided for
SSOP and TSSOP packages - the following conditions
must be observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow and must incorporate solder
thieves at the downstream end.
Even with these conditions:
• Only consider wave soldering SSOP packages that
have a body width of 4.4 mm, that is
SSOP16 (SOT369-1) or SSOP20 (SOT266-1).
• Do not consider wave soldering TSSOP packages
with 48 leads or more, that is TSSOP48 (SOT362-1)
and TSSOP56 (SOT364-1).
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
R
EPAIRING SOLDERED JOINTS
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
Page 15
1998 Jun 10 15
Philips Semiconductors Product specification
Dual JK flip-flop with set and reset;
negative-edge trigger
74HC/HCT112
one operation within 2 to 5 seconds between
270 and 320 °C.
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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