74ACT574PC

74ACT574PC Datasheet

74AC574<br>• 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs

Part	Datasheet
74ACT574PC	74ACT574PC (pdf)

Related Parts	Information
74ACT574SJ	74ACT574SJ
74ACT574SJX	74ACT574SJX
74ACT574SC	74ACT574SC
74ACT574MTC	74ACT574MTC
74ACT574MTCX	74ACT574MTCX
74ACT574SCX	74ACT574SCX

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74AC574 • 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs 74AC574 • 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs The AC/ACT574 is a high-speed, low power octal flip-flop with a buffered common Clock CP and a buffered common Output Enable OE . The information presented to the D-type inputs is stored in the flip-flops on the LOW-to-HIGH Clock CP transition. The AC/ACT574 is functionally identical to the AC/ACT374 except for the pinouts. s ICC and IOZ reduced by 50% s Inputs and outputs on opposite sides of package allowing easy interface with microprocessors s Useful as input or output port for microprocessors s Functionally identical to AC/ACT374 s 3-STATE outputs for bus-oriented applications s Outputs source/sink 24 mA s ACT574 has TTL-compatible inputs Ordering Code: Order Number Package Number Package Description 74AC574SC M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide Body 74AC574SJ M20D 20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide 74AC574MTC MTC20 20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide 74AC574PC N20A 20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide 74ACT574SC M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-01 74ACT574SJ M20D 20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide 74ACT574MTC MTC20 20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide 74ACT574PC N20A 20-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 Data Inputs Clock Pulse Input 3-STATE Output Enable Input 3-STATE Outputs is a trademark of Fairchild Semiconductor Corporation. 1999 Fairchild Semiconductor Corporation DS009910 74AC574 • 74ACT574 Functional Description The AC/ACT574 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-STATE true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D-type inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock CP transition. With the Output Enable OE LOW, the contents of the eight 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 flipflops. Logic Diagram Function Table Inputs Internal Outputs OE CP D Q Function H L NC Z Hold Z Hold Z Load Z Load L Data Available H Data Available L H L NC NC No Change in Data L H NC H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial = High Impedance = LOW-to-HIGH Transition NC = No Change NC No Change in Data Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 74AC574 • 74ACT574 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 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

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74AC574
• 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs
74AC574
• 74ACT574 Octal D-Type Flip-Flop with 3-STATE Outputs

The AC/ACT574 is a high-speed, low power octal flip-flop with a buffered common Clock CP and a buffered common Output Enable OE . The information presented to the D-type inputs is stored in the flip-flops on the LOW-to-HIGH Clock CP transition.

The AC/ACT574 is functionally identical to the AC/ACT374 except for the pinouts.
s ICC and IOZ reduced by 50% s Inputs and outputs on opposite sides of package
allowing easy interface with microprocessors s Useful as input or output port for microprocessors s Functionally identical to AC/ACT374 s 3-STATE outputs for bus-oriented applications s Outputs source/sink 24 mA s ACT574 has TTL-compatible inputs
Ordering Code:

Order Number Package Number

Package Description
74AC574SC

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide Body
74AC574SJ

M20D
20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
74AC574MTC

MTC20
20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
74AC574PC

N20A
20-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
74ACT574SC

M20B
20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-01
74ACT574SJ

M20D
20-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
74ACT574MTC

MTC20
20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
74ACT574PC

N20A
20-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

Data Inputs Clock Pulse Input
3-STATE Output Enable Input
3-STATE Outputs
is a trademark of Fairchild Semiconductor Corporation.
1999 Fairchild Semiconductor Corporation DS009910
74AC574
• 74ACT574

Functional Description

The AC/ACT574 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-STATE true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D-type inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock CP transition. With the Output Enable OE LOW, the contents of the eight 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 flipflops.

Logic Diagram

Function Table

Inputs Internal Outputs

OE CP D Q

Function

H L NC

Z Hold

Z Hold Z Load Z Load L Data Available H Data Available

L H L NC

NC No Change in Data

L H NC

H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
= High Impedance = LOW-to-HIGH Transition NC = No Change

NC No Change in Data

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
74AC574
• 74ACT574

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 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

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Datasheet ID: 74ACT574PC 513178