November 1992
Revised November 1999
74ABT574
Octal D-Type Flip-Flop with 3-STATE Outputs
General Description
Features
The ABT574 is an octal flip-flop with a buffered common
Clock (CP) and a buffered common Output Enable (OE).
The information presented to the D inputs is stored in the
flip-flops on the LOW-to-HIGH Clock (CP) transition.
■ Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors
■ Useful as input or output port for microprocessors
■ Functionally identical to ABT374
The device is functionally identical to the ABT374 but has
broadside pinouts.
■ 3-STATE outputs for bus-oriented applications
■ Output sink capability of 64 mA, source capability
of 32 mA
■ Guaranteed output skew
■ Guaranteed multiple output switching specifications
■ Output switching specified for both 50 pF and
250 pF loads
■ Guaranteed simultaneous switching, noise level and
dynamic threshold performance
■ Guaranteed latchup protection
■ High impedance glitch free bus loading during entire
power up and power down cycle
■ Non-destructive hot insertion capability
Ordering Code:
Order Number Package Number
Package Description
74ABT574CSC
74ABT574CSJ
74ABT574CMSA
74ABT574CMTC
M20B
M20D
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MSA20
MTC20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
D0–D7
CP
Description
Data Inputs
Clock Pulse Input (Active Rising Edge)
3-STATE Output Enable Input (Active LOW)
3-STATE Outputs
OE
O0–O7
© 1999 Fairchild Semiconductor Corporation
DS011511
www.fairchildsemi.com