74ACTQ821SC

74ACTQ821SC Datasheet


74ACTQ821 Quiet 10-Bit D-Type Flip-Flop with 3-STATE Outputs

Part Datasheet
74ACTQ821SC 74ACTQ821SC 74ACTQ821SC (pdf)
Related Parts Information
74ACTQ821SCX 74ACTQ821SCX 74ACTQ821SCX
74ACTQ821SPC 74ACTQ821SPC 74ACTQ821SPC
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74ACTQ821 Quiet 10-Bit D-Type Flip-Flop with 3-STATE Outputs
74ACTQ821

Quiet 10-Bit D-Type Flip-Flop with 3-STATE Outputs

The ACTQ821 is a 10-bit D-type flip-flop with non-inverting 3-STATE outputs arranged in a broadside pinout. The ACTQ821 utilizes Fairchild’s Quiet technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet features output control and undershoot corrector in addition to a split ground bus for superior performance.
s Guaranteed simultaneous switching noise level and dynamic threshold performance
s Guaranteed pin-to-pin skew AC performance s Non-inverting 3-STATE outputs for bus interfacing s 4 kV minimum ESD immunity s Outputs source/sink 24 mA
Ordering Code:

Order Number Package Number

Package Description
74ACTQ821SC

M24B
24-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide
74ACTQ821SPC

N24C
24-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names OE CP

Description Data Inputs Data Outputs Output Enable Input Clock Input

Quiet FACT Quiet and are trademarks of Fairchild Semiconductor Corporation.
2000 Fairchild Semiconductor Corporation DS010686
74ACTQ821

Functional Description

The ACTQ821 consists of ten-bit D-type edge-triggered flip-flops. The buffered Clock CP and buffered Output Enable OE are common to all flip-flops. The flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the LOW-to-HIGH CP transition. With OE LOW the contents of the flip-flops are available at the outputs. When OE is HIGH the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip-flops. The ACTQ821 is functionally and pin compatible with the AM29821.

Logic Diagram

Function Table

Inputs

Internal

OE CP D

H = HIGH Voltage Level L = LOW Voltage Level
= HIGH Impedance = LOW-to-HIGH Clock Transition

Outputs O

Function

High Z

High Z

Load

Load

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
74ACTQ821

Absolute Maximum Ratings Note 1

Supply Voltage VCC DC Input Diode Current IIK

VI = − 0.5V VI = VCC + 0.5V DC Input Voltage VI DC Output Diode Current IOK VO = − 0.5V VO = VCC + 0.5V DC Output Voltage VO DC Output Source
or Sink Current IO DC VCC or Ground Current
per Output Pin ICC or IGND Storage Temperature TSTG DC Latch-Up Source
or Sink Current

Junction Temperature TJ PDIP
− 0.5V to + 7.0V
− 20 mA + 20 mA − 0.5V to VCC + 0.5V
− 20 mA + 20 mA − 0.5V to VCC + 0.5V
± 50 mA
± 50 mA − 65°C to + 150°C
± 300 mA
140°C
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Datasheet ID: 74ACTQ821SC 513219