The 74VHC16374 is an advanced high-speed
FLIP FLOP with 3 STATE OUTPUTS NON
INVERTING fabricated with sub-micron silicon
gate and double-layer metal wiring C
2
MOS
technology.
These 16 bit D-TYPE flip-flop is controlled by two
clock inputs (CK) and two output enable inputs
(nOE
). The device can be used as two 8-bit
flip-flops or one 16-bit flip-flop.
On the p os itive transition of the cl ock, the Q
outputs will be set to the logic state that were
setup at the D inputs.
While the (OE
) input is low , the outputs will be in
a normal logic state (high or low logic level); while
OE
is high, the outputs w ill be in a high impedanc e
state.
The output con trol does not affect the internal operation of flip-flops; that is, the old data c an be retained or the new data can be ent ered even while
the outputs are off.
Power down protection is provided on all inputs
and 0 to 7V can be accept ed on inputs with no
regard to the supply voltage. This device can be
usedto interface 5V to 3V.
All inputs and outputs are equipped with protection circuits against static discharge, giving them
2KV ESD immunity and transient excess vo ltage.
1/11February 2003
Page 2
74VHC16374
INPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN NoSYMBOLNAME AND FUNCTION
11OE
2, 3,5,6,8, 9,
11, 12
13,14,16, 17,
19, 20, 22, 23
242OE
252CKClock Input (LOW-to-HIGH
36,35,33, 32,
30, 29, 27, 26
47,46,44, 43,
41, 40, 38, 37
481CKClock Input (LOW-to-HIGH
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42V
1Q0 to
1Q7
2Q0 to
2Q7
2D0 to 2D7 Data Inputs
1D0 to 1D7 Data Inputs
GNDGround (0V)
3 State Output Enable
Input (Active LOW)
3-State Outputs
3-State Outputs
3 State Output Enable
Input (Active LOW)
Edge Trigger)
Edge Trigger)
Positive Supply Voltage
CC
TRUTH TABLE
INPUTSOUTPUTS
IEC LOGIC SYMBOLS
OE
HXXZ
LXNO CHANGE
LLL
LHH
X : Don’t Care
Z : High Impedance
2/11
CKDQ
Page 3
74VHC16374
LOGIC DIAGRAM
This logic diagram has not to be used to estimate propagation delays
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
V
CC
V
V
I
IK
I
OK
I
or I
I
CC
T
stg
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Supply Voltage
DC Input Voltage
I
DC Output Voltage-0.5 to VCC+ 0.5
O
DC Input Diode Current
DC Output Diode Current
DC Output Current
O
DC VCCor Ground Current
GND
Storage Temperature
Lead Temperature (10 sec)
L
-0.5 to +7.0V
-0.5 to +7.0V
V
-20mA
± 20mA
± 25mA
± 75mA
-65 to +150°C
300°C
RECOMMENDED OPERATING CONDITIONS
SymbolParameterValueUnit
V
CC
V
V
T
dt/dv
1) VINfrom30% to 70%of V
Supply Voltage
Input Voltage
I
Output Voltage0 to V
O
Operating Temperature
op
Input Rise and Fall Time (note 1) (V
CC
CC
(V
= 5.0 ± 0.5V)
CC
=3.3±0.3V)
2 to 5.5V
0 to 5.5V
CC
-55 to 125°C
0 to 100
0to20
V
ns/V
3/11
Page 4
74VHC16374
DC SPECIFICATIONS
SymbolParameter
V
V
V
I
High Level Input
IH
Voltage
V
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
High Impedance
I
OZ
Output Leakage
Current
Input Leakage
I
I
Current
Quiescent Supply
CC
Current
Test ConditionValue
V
(V)
CC
T
A
Min.Typ. Max.Min.Max. Min. Max.
-40 to 85°C -55 to 125°C
= 25°C
2.01.51.51.5
3.0to
5.5
0.7V
CC
0.7V
CC
0.7V
CC
2.00.50.50.5
3.0to
5.5
2.0
3.0
4.5
3.0
4.5
2.0
3.0
4.5
3.0
4.5
5.5
0to
5.5
5.5
IO=-50 µA
=-50 µA
I
O
=-50 µA
I
O
=-4 mA
I
O
=-8 mA
I
O
IO=50 µA
=50 µA
I
O
=50 µA
I
O
=4 mA
I
O
=8 mA
I
O
I=VIH
or V
IL
V
VO=VCCor GND
VI= 5.5V or GND
V
I=VCC
or GND
1.92.01.91.9
2.93.02.92.9
4.44.54.44.4
2.582.482.4
3.943.83.7
0.3V
CC
0.3V
CC
0.00.10.10.1
0.00.10.10.1
0.00.10.10.1
0.360.440.55
0.360.440.55
±0.25± 2.5± 5µA
± 0.1± 1± 1µA
44040µA
0.3V
CC
Unit
V
V
V
V
4/11
Page 5
AC ELECTRICAL C HARACTERISTICS (Input tr=tf=3ns)
Test ConditionValue
SymbolParameter
V
(V)
t
t
Propagation Delay
PLH
Time
PHL
CK to Q
3.3
3.3
5.0
5.0
t
t
PZH
PZL
Output Enable
Time
3.3
3.3
5.0
5.0
t
t
PHZ
f
MAX
t
OSLH
t
OSHL
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5.0V ± 0.5V
Note 1 : Parameter guaranteed by design. t
Output Disable
PLZ
Time
t
Pulse Width (CK)
w
HIGH or LOW
t
Setup Time Dn to
s
CK HIGH or LOW
t
Hold Time Dn to LE
h
HIGH or LOW
Maximum Clock
Frequency
Output to Output
Skew time (note 1)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
C
CC
L
(pF)
(*)
15915117117
(*)
5010.616.2118.5118.5
(**)
155.49.1110.1110.1
(**)
506.910.1111.5111.5
(*)
15813115115
(*)
509.614.9116116
(**)
155.19.1110110
(**)
506.610.1111.5111.5
(*)
5011.815.5117117
(**)
506.110.5111.5111.5
(*)
(**)
(*)
(**)
(*)
(**)
(*)
(**)
(*)
501.51.51.5
(**)
50111
soLH
=|t
pLHm-tpLHn
|, t
soHL
T
Min.Typ. Max.Min.Max. Min. Max.
555
555
4.544
333
222
222
801307070
130185110110
=|t
pHLm-tpHLn
= 25°C
A
74VHC16374
-40 to 85°C -55 to 125°C
|
Unit
ns
ns
ns
ns
ns
ns
ns
MHz
ns
CAPACITIVE CHARACTERISTICS
Test ConditionValue
= 25°C
SymbolParameter
V
CC
(V)
C
C
C
Input Capacitance
IN
Output
OUT
Capacitance
Power Dissipation
PD
Capacitance
5.0
= 10MHz
f
IN
T
A
Min.Typ. Max.Min.Max. Min. Max.
2.5101010pF
4pF
21pF
(note 1)
1) CPDis defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
Latch)
-40 to 85°C -55 to 125°C
CC(opr)=CPDxVCCxfIN+ICC
Unit
/16 (per
5/11
Page 6
74VHC16374
DYNAMIC S WITCHING CHARACTERISTICS
Test ConditionValue
= 25°C
SymbolParameter
V
V
Dynamic Low
OLP
Voltage Quiet
OLV
Output (note 1, 2)
V
CC
(V)
5.0
T
A
Min.Typ. Max.Min.Max. Min. Max.
0.60.9
-0.9-0.6
Dynamic High
V
IHD
Voltage Input
5.03.5V
C
L
=50pF
(note 1, 3)
Dynamic Low
V
ILD
Voltage Input
5.01.5V
(note 1, 3)
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (V
), f=1MHz.
(V
IHD
TEST CIRCUIT
-40 to 85°C -55 to 125°C
ILD
Unit
V
), 0V to threshold
TESTSWITCH
t
PLH,tPHL
t
PZL,tPLZ
t
PZH,tPHZ
CL= 15/50 pF or equivalent (includes jig and probe capacitance)
=R1=1KΩ or equivalent
R
L
R
T=ZOUT
of pulse generator (typically 50Ω)
6/11
Open
V
CC
GND
Page 7
74VHC16374
WAVEFORM 1 PROPAGATION DELAYS, SETUP AND HOLD TIMES, MAXIMUM CLOCK
FREQUENCY (f=1MHz; 50% duty cycle)
WAVEFORM 2: OUTPUT ENABLE AND D ISABLE TIME (f=1MHz; 50% duty cycle)
7/11
Page 8
74VHC16374
WAVEFORM 3 : CLOCK PUL SE WIDTHS (f=1MHz; 50% duty cycle)
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use o f suc h inf ormat ion n or f or an y infr ingeme nt of paten ts or oth er ri gh ts of third part ies whic h may resul t f rom
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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