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MC74VHCT374A Datasheet PDF : 8 Pages
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ON Semiconductort
Octal D-Type Flip-Flop
with 3-State Output
The MC74VHCT374A is an advanced high speed CMOS octal
flip–flop with 3–state output fabricated with silicon gate CMOS
technology. It achieves high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining CMOS low power
dissipation.
This 8–bit D–type flip–flop is controlled by a clock input and an
output enable input. When the output enable input is high, the eight
outputs are in a high impedance state.
The internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output.
The VHCT inputs are compatible with TTL levels. This device can
be used as a level converter for interfacing 3.3V to 5.0V, because it has
full 5V CMOS level output swings.
The VHCT374A input and output (when disabled) structures
provide protection when voltages between 0V and 5.5V are applied,
regardless of the supply voltage. These input and output structures
help prevent device destruction caused by supply voltage –
input/output voltage mismatch, battery backup, hot insertion, etc.
• High Speed: fmax = 140MHz (Typ) at VCC = 5V
• Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C
• TTL–Compatible Inputs: VIL = 0.8V; VIH = 2.0V
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Designed for 4.5V to 5.5V Operating Range
• Low Noise: VOLP = 1.6V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300mA
• ESD Performance: HBM > 2000V; Machine Model > 200V
• Chip Complexity: 276 FETs or 69 Equivalent Gates
DATA
INPUTS
D0 3
D1 4
D2 7
D3 8
D4 13
D5 14
D6
D7
17
18
CP 11
OE 1
2 Q0
5 Q1
6 Q2
9 Q3
12 Q4
15 Q5
16 Q6
19 Q7
NONINVERTING
OUTPUTS
Figure 1. Logic Diagram
© Semiconductor Components Industries, LLC, 2001
1
March, 2001 – Rev. 2
MC74VHCT374A
DW SUFFIX
20–LEAD SOIC WIDE PACKAGE
CASE 751D–05
DT SUFFIX
20–LEAD TSSOP PACKAGE
CASE 948E–02
M SUFFIX
20–LEAD SOIC EIAJ PACKAGE
CASE 967–01
ORDERING INFORMATION
MC74VHCTXXXADW SOIC WIDE
MC74VHCTXXXADT TSSOP
MC74VHCTXXXAM SOIC EIAJ
FUNCTION TABLE
INPUTS
OUTPUT
OE
CP
D
Q
L
H
H
L
L
L
L
L, H,
X
No Change
H
X
X
Z
OE 1
Q0 2
D0 3
D1 4
Q1 5
Q2 6
D2 7
D3 8
Q3 9
GND 10
20 VCC
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
13 D4
12 Q4
11 CP
Figure 2. Pin Assignment
Publication Order Number:
MC74VHCT374A/D
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