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The MC74LCX574 is a high performance, noninverting octal Dtype flipflop operating from a 2.7 to 3.6V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. A VI specification of 5.5V allows MC74LCX574 inputs to be safely driven from 5V devices.
The MC74LCX574 consists of 8 edgetriggered flipflops with individual Dtype inputs and 3state true outputs. The buffered clock and buffered Output Enable (OE) are common to all flipflops. The eight flipflops will store the state of individual D inputs that meet the setup and hold time requirements on the LOWtoHIGH Clock (CP) transition. With the OE LOW, the contents of the eight flipflops are available at the outputs. When the OE is HIGH, the outputs go to the high impedance state. The OE input level does not affect the operation of the flipflops. The LCX574 flow through design facilitates easy PC board layout.
MC74LCX574 Maximum Ratings
Symbol
Parameter
Value
Condition
Unit
VCC
DC Supply Voltage
0.5 to +7.0
V
VI
DC Input Voltage
0.5 VI +7.0
V
VO
DC Output Voltage
0.5 VO +7.0
Output in 3State
V
0.5 VO VCC + 0.5
Note 1.
V
IIK
DC Input Diode Current
50
VI < GND
mA
IOK
DC Output Diode Current
50
VO < GND
mA
+50
VO > VCC
mA
IO
DC Output Source/Sink Current
+50
mA
ICC
DC Supply Current Per Supply Pin
±100
mA
IGND
DC Ground Current Per Ground Pin
±100
mA
TSTG
Storage Temperature Range
65 to +150
°C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolutemaximumrated conditions is not implied. 1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
MC74LCX574 Features
• Designed for 2.7 to 3.6V VCC Operation • 5V Tolerant - Interface Capability With 5V TTL Logic • Supports Live Insertion and Withdrawal • IOFF Specification Guarantees High Impedance When VCC = 0V • LVTTL Compatible • LVCMOS Compatible • 24mA Balanced Output Sink and Source Capability • Near Zero Static Supply Current in All Three Logic States (10mA) Substantially Reduces System Power Requirements • Latchup Performance Exceeds 500mA • ESD Performance: Human Body Model >2000V; Machine Model >200V