SN74ALVCH16823

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Biestable de interfaz de bus de 18 bits con salidas de 3 estados

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document-pdfAcrobat SN74ALVCH16823 datasheet (Rev. F) (Inglés)

SN74ALVCH16823

ACTIVO

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Detalles del producto

Number of channels

18

Technology family

ALVC

Input type

Standard CMOS

Output type

3-State

Clock frequency (max) (MHz)

150

IOL (max) (mA)

24

IOH (max) (mA)

-24

Supply current (max) (µA)

40

Features

Balanced outputs, Bus-hold, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns)

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Number of channels

18

Technology family

ALVC

Input type

Standard CMOS

Output type

3-State

Clock frequency (max) (MHz)

150

IOL (max) (mA)

24

IOH (max) (mA)

-24

Supply current (max) (µA)

40

Features

Balanced outputs, Bus-hold, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns)

Operating temperature range (°C)

-40 to 85

Rating

Catalog

SSOP (DL)

56

190.647 mm² (18.42 mm × 10.35 mm)

TVSOP (DGV)

56

72.32 mm² (11.3 mm × 6.4 mm)

TSSOP (DGG)

56

113.4 mm² (14 mm × 8.1 mm)

Member of the Texas Instruments Widebus™ Family
EPIC™ (Enhanced-Performance Implanted CMOS) Submicron Process
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Latch-Up Performance Exceeds 250 mA Per JESD 17
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages

Widebus, EPIC are trademarks of Texas Instruments.

Member of the Texas Instruments Widebus™ Family
EPIC™ (Enhanced-Performance Implanted CMOS) Submicron Process
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Latch-Up Performance Exceeds 250 mA Per JESD 17
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages

Widebus, EPIC are trademarks of Texas Instruments.

This 18-bit bus-interface flip-flop is designed for 1.65-V to 3.6-V V_CC operation.

The SN74ALVCH16823 features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. This device is particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers.

The SN74ALVCH16823 can be used as two 9-bit flip-flops or one 18-bit flip-flop. With the clock-enable (CLKEN) input low, the D-type flip-flops enter data on the low-to-high transitions of the clock. Taking CLKEN high disables the clock buffer, thus latching the outputs. Taking the clear (CLR) input low causes the Q outputs to go low independently of the clock.

A buffered output-enable (OE) input can be used to place the nine 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 need for interface or pullup components.

The output-enable (OE) input does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN74ALVCH16823 is characterized for operation from -40°C to 85°C.