MC74HCT574A_14 Datasheet, PDF (1/7 Pages) ON Semiconductor – Octal 3-State Noninverting D Flip-Flop with LSTTL-Compatible Inputs

MC74HCT574A
Octal 3-State Noninverting
D Flip-Flop with
LSTTL-Compatible Inputs
High−Performance Silicon−Gate CMOS
The MC74HCT574A is identical in pinout to the LS574. This
device may be used as a level converter for interfacing TTL or NMOS
outputs to High Speed CMOS inputs.
Data meeting the setup time is clocked to the outputs with the rising
edge of the Clock. The Output Enable input does not affect the states
of the flip−flops, but when Output Enable is high, all device outputs
are forced to the high−impedance state. Thus, data may be stored even
when the outputs are not enabled.
The HCT574A is identical in function to the HCT374A but has the
flip−flop inputs on the opposite side of the package from the outputs to
facilitate PC board layout.
Features
• Output Drive Capability: 15 LSTTL Loads
• TTL NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 mA
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7 A
• Chip Complexity: 286 FETs or 71.5 Equivalent Gates
• These Devices are Pb−Free and are RoHS Compliant
DATA
INPUTS
D0 ²
D1 ³
D2 ⁴
D3 ⁵
D4 ⁶
D5 ⁷
D6 ⁸
D7 ⁹
CLOCK ¹¹
OUTPUT ENABLE ¹
19 _Q0
18 _Q1
17 _Q2
16 _Q3
15 _Q4
14 _Q5
13 _Q6
12 _Q7
NON-
INVERTING
OUTPUTS
PIN 20 = V_CC
PIN 10 = GND
Figure 1. Logic Diagram
© Semiconductor Components Industries, LLC, 2014
1
September, 2014 − Rev. 11
http://onsemi.com
SOIC−20
DW SUFFIX
CASE 751D
TSSOP−20
DT SUFFIX
CASE 948E
PIN ASSIGNMENT
OUTPUT
ENABLE 1
D0 2
D1 3
D2 4
D3 5
D4 6
D5 ₇
D6 8
D7 9
GND 10
20 _VCC
19 _Q0
18 _Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
11 CLOCK
MARKING DIAGRAMS
20
HCT574A
AWLYYWWG
1
SOIC−20
20
HCT
574A
ALYWG
G
1
TSSOP−20
A
WL, L
YY, Y
WW, W
G or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
FUNCTION TABLE
Inputs
Output
OE Clock D
Q
L
L
L
L,H,
H
X
H
H
L
L
X No Change
X
Z
X = don’t care
Z = high impedance
ORDERING INFORMATION
See detailed ordering and shipping information on page 5 of
this data sheet.
Publication Order Number:
MC74HCT574A/D