74VHC374 Datasheet PDF - Fairchild Semiconductor
Part Number | 74VHC374 | |
Description | Octal D-Type Flip-Flop | |
Manufacturers | Fairchild Semiconductor | |
Logo | ||
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Octal D-Type Flip-Flop with 3-STATE Outputs
April 2007
tm
Features
■ High Speed: tPD = 5.4ns (typ) at VCC = 5V
■ High noise immunity: VNIH = VNIL = 28% VCC (Min.)
■ Power down protection is provided on all inputs
■ Low power dissipation: ICC = 4µA (Max) @ TA = 25°C
■ Pin and function compatible with 74HC374
General Description
The VHC374 is an advanced high speed CMOS octal
flip-flop with 3-STATE output fabricated with silicon gate
CMOS technology. It achieves the high speed operation
similar to equivalent Bipolar Schottky TTL while main-
taining the CMOS low power dissipation. This 8-bit
D-type flip-flop is controlled by a clock input (CP) and an
output enable input (OE). When the OE input is HIGH,
the eight outputs are in a HIGH impedance state.
An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply
voltage. This device can be used to interface 5V to 3V
systems and two supply systems such as battery back
up. This circuit prevents device destruction due to mis-
matched supply and input voltages.
Ordering Information
Order
Number
74VHC374M
74VHC374SJ
74VHC374MTC
Package
Number
M20B
M20D
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the
ordering number. Pb-Free package per JEDEC J-STD-020B.
Connection Diagram
Pin Descriptions
Pin Names
D0–D7
CP
OE
O0–O7
Description
Data Inputs
Clock Pulse Input
3-STATE Output Enable Input
3-STATE Outputs
©1992 Fairchild Semiconductor Corporation
74VHC374 Rev. 1.3
www.fairchildsemi.com
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AC Electrical Characteristics
Symbol Parameter VCC (V)
Conditions
tPLH, tPHL Propagation Delay 3.3 ± 0.3
Time (CP to On)
CL = 15pF
CL = 50pF
5.0 ± 0.5
CL = 15pF
CL = 50pF
tPZL, tPZH 3-STATE Output
Enable Time
3.3 ± 0.3 RL = 1kΩ
CL = 15pF
CL = 50pF
5.0 ± 0.5
CL = 15pF
CL = 50pF
tPLZ, tPHZ 3-STATE Output
Disable Time
tOSLH, Output to Output
tOSHL Skew
3.3 ± 0.3 RL = 1kΩ
5.0 ± 0.5
3.3 ± 0.3 (3)
5.0 ± 0.5
CL = 50pF
CL = 50pF
CL = 50pF
CL = 50pF
fMAX Maximum Clock
Frequency
3.3 ± 0.3
CL = 15pF
CL = 50pF
5.0 ± 0.5
CL = 15pF
CL = 50pF
CIN Input Capacitance
VCC = Open
COUT
CPD
Output Capacitance
Power Dissipation
Capacitance
VCC = 5.0V
(4)
TA = 25°C
Min. Typ. Max.
8.1 12.7
10.6 16.2
5.4 8.1
6.9 10.1
7.1 11.0
9.6 14.5
5.1 7.6
6.6 9.6
10.2 14.0
6.1 8.8
1.5
1.0
80 130
55 85
130 185
85 120
4 10
6
32
TA = –40°C
to +85°C
Min. Max. Units
1.0 15.0 ns
1.0 18.5
1.0 9.5 ns
1.0 11.5
1.0 13.0 ns
1.0 16.5
1.0 9.0 ns
1.0 11.0
1.0 16.0 ns
1.0 10.0
1.5 ns
1.0
70 MHz
50
110
75
10 pF
pF
pF
Notes:
3. Parameter guaranteed by design. tOSLH = |tPLH max – tPLH min|; tOSHL = |tPHL max – tPHL min|
4. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load. Average operating current can be obtained by the equation:
ICC (opr.) = CPD • VCC • fIN + ICC / 8 (per F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates
can be calculated by the equation: CPD (total) = 20 + 12n.
AC Operating Requirements
Symbol
tW(H), tW(L)
Parameter
Minimum Pulse Width
(CP)
tS Minimum Set-Up Time
tH Minimum Hold Time
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
TA = 25°C
TA = –40°C to +85°C
Min. Typ. Max. Min.
Max.
5.0 5.5
5.0 5.0
4.5 4.5
3.0 3.0
2.0 2.0
2.0 2.0
Units
ns
ns
ns
©1992 Fairchild Semiconductor Corporation
74VHC374 Rev. 1.3
5
www.fairchildsemi.com
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