SN54LVC574A

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具有三态输出的八路边沿触发式 D 型触发器

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数据表

document-pdfAcrobat SN54LVC574A, SN74LVC574A 数据表 (Rev. R) (英语)

SN54LVC574A

正在供货

数据表

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产品详情

Number of channels

8

Technology family

LVC

Input type

Standard CMOS

Output type

3-State

Clock frequency (max) (MHz)

100

IOL (max) (mA)

24

IOH (max) (mA)

-24

Supply current (max) (µA)

10

Features

Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns)

Operating temperature range (°C)

-55 to 125

Rating

Military

Number of channels

8

Technology family

LVC

Input type

Standard CMOS

Output type

3-State

Clock frequency (max) (MHz)

100

IOL (max) (mA)

24

IOH (max) (mA)

-24

Supply current (max) (µA)

10

Features

Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns)

Operating temperature range (°C)

-55 to 125

Rating

Military

CFP (W)

20

90.5828 mm² (— mm × — mm)

CDIP (J)

20

167.464 mm² (— mm × — mm)

Operate From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Specified From -40°C to 85°C, -40°C to 125°C, and -55°C to 125°C
Max t_pd of 7 ns at 3.3 V
Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V V_CC)
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

Operate From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Specified From -40°C to 85°C, -40°C to 125°C, and -55°C to 125°C
Max t_pd of 7 ns at 3.3 V
Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
Support Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V V_CC)
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

The SN54LVC574A octal edge-triggered D-type flip-flop is designed for 2.7-V to 3.6-V V_CC operation, and the SN74LVC574A octal edge-triggered D-type flip-flop is designed for 1.65-V to 3.6-V V_CC operation.

These devices feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels at the data (D) inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

These devices are fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.