74VCXH16374MTD_技术文档

January 2000

Revised March 2000

74VCXH16374

Low Voltage 16-Bit D-Type Flip-Flop with Bushold

General Description

Features

The VCXH16374 contains sixteen non-inverting D-type flip-

flops with 3-STATE outputs and is intended for bus oriented

applications. The device is byte controlled. A buffered clock

(CP) and output enable (OE) are common to each byte and

can be shorted together for full 16-bit operation.

■ 1.65V–3.6V V_CCsupply operation

■ 3.6V tolerant control inputs and outputs

■ Bushold on data inputs eliminates the need for external

pull-up/pull-down resistors

■ t_PD

The VCXH16374 data inputs include active bushold cir-

cuitry, eliminating the need for external pull-up resistors to

hold unused or floating data inputs at a valid logic level.

3.0 ns max for 3.0V to 3.6V V_CC

3.9 ns max for 2.3V to 2.7V V_CC

7.8 ns max for 1.65V to 1.95V V_CC

The 74VCXH16374 is designed for low voltage (1.65V to

3.6V) V_CCapplications with output compatibility up to 3.6V.

■ Static Drive (I_OH/I_OL

)

The 74VCXH16374 is fabricated with an advanced CMOS

technology to achieve high speed operation while maintain-

ing low CMOS power dissipation.

±24 mA @ 3.0V V_CC

±18 mA @ 2.3V V_CC

±6 mA @ 1.65V V_CC

■ Uses patented noise/EMI reduction circuitry

■ Latch-up performance exceeds 300 mA

■ ESD performance:

Human body model > 2000V

Machine model > 200V

Ordering Code:

Package

Order Number

Package Descriptions

Number

74VCXH16374MTD

MTD48

48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbol

Pin Descriptions

Pin Names

Description

OE_n

Output Enable Input (Active LOW)

Clock Pulse Input

Bushold Inputs

CP_n

I₀–I₁₅

O₀–O₁₅

Outputs

DS500228

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Connection Diagram

Truth Tables

Inputs

OE₁

Outputs

CP₁

I₀–I₇

O₀–O₇

L

H

L

H

L

X

O₀

Z

X

H

Inputs

OE₂

Outputs

O₈–O₁₅

CP₂

I₈–I₁₅

L

H

L

H

L

X

O₀

Z

X

H

L

= HIGH Voltage Level

= LOW Voltage Level

X

Z

O

= Immaterial (HIGH or LOW, control inputs may not float)

= High Impedance

= Previous O before HIGH-to-LOW of CP

0

Functional Description

The 74VCXH16374 consists of sixteen edge-triggered flip-

flops with individual D-type inputs and 3-STATE true out-

puts. The device is byte controlled with each byte function-

ing identically, but independent of the other. The control

pins can be shorted together to obtain full 16-bit operation.

Each clock has a buffered clock and buffered Output

Enable common to all flip-flops within that byte. The

description which follows applies to each byte. Each flip-

flop will store the state of their individual I inputs that meet

the setup and hold time requirements on the LOW-to-HIGH

Clock (CP_n) transition. With the Output Enable (OE_n) LOW,

the contents of the flip-flops are available at the outputs.

When OE_nis HIGH, the outputs go to the high impedance

state. Operations of the OE_ninput does not affect the state

of the flip-flops.

Logic Diagram

Byte 1 (0:7)

Byte 2 (8:15)

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

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2

Absolute Maximum Ratings(Note 1)

Recommended Operating

Conditions ^{(Note 3)}

Supply Voltage (V_CC

)

−0.5V to +4.6V

DC Input Voltage (V_I)

OE_n, CP_n

Power Supply

−0.5V to 4.6V

Operating

1.65V to 3.6V

1.2V to 3.6V

−0.3V to V_CC

I₀– I₁₅

−0.5V to V_CC+ 0.5V

Data Retention Only

Input Voltage

Output Voltage (V_O)

Outputs 3-STATED

Outputs Active (Note 2)

DC Input Diode Current (I_IK

V_I< 0V

−0.5V to +4.6V

Output Voltage (V_O)

Output in Active States

Output in “OFF” State

Output Current in I_OH/I_OL

−0.5V to V_CC+0.5V

0V to V_CC

)

0.0V to 3.6V

−50 mA

DC Output Diode Current (I_OK

)

V

_CC= 3.0V to 3.6V

_CC= 2.3V to 2.7V

_CC= 1.65V to 2.3V

±24 mA

±18 mA

V

_O< 0V

−50 mA

+50 mA

_O> V_CC

±6 mA

DC Output Source/Sink Current

(I_OH/I_OL

Free Air Operating Temperature (T_A)

−40°C to +85°C

)

±50 mA

Minimum Input Edge Rate (∆t/∆V)

DC V_CCor GND Current per

Supply Pin (I_CCor GND)

V

_IN= 0.8V to 2.0V, V_CC= 3.0V

10 ns/V

Note 1: The Absolute Maximum Ratings are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the Absolute Maximum Rat-

ings. The “Recommended Operating Conditions” table will define the condi-

tions for actual device operation.

±100 mA

Storage Temperature Range (T_STG

)

−65°C to +150°C

Note 2: I Absolute Maximum Rating must be observed.

O

Note 3: Floating or unused control inputs must be held HIGH or LOW.

DC Electrical Characteristics (2.7V < V ≤ 3.6V)

CC

V

CC

Symbol

Parameter

Conditions

Min

Max

Units

(V)

2.7 − 3.6

2.7

V

HIGH Level Input Voltage

2.0

V

IH

LOW Level Input Voltage

HIGH Level Output Voltage

0.8

IL

I

= −100 µA

V − 0.2

CC

V

OH

OL

= −12 mA

= −18 mA

= −24 mA

= 100 µA

= 12 mA

= 18 mA

= 24 mA

2.2

2.4

2.2

V

3.0

V

3.0

V

LOW Level Output Voltage

2.7 − 3.6

2.7

0.2

0.4

V

OL

V

3.0

0.4

V

3.0

0.55

±5.0

V

I

Input Leakage Current

Control Pins

Data Pins

0 ≤ V ≤ 3.6V

2.7 − 3.6

3.0

µA

I

V = V or GND

I

CC

Bushold Input Minimum

Drive Hold Current

V

= 0.8V

75

−75

450

−450

I(HOLD)

I(OD)

OZ

IN

µA

= 2.0V

3.0

Bushold Input Over-Drive

Current to Change State

3-STATE Output Leakage

(Note 4)

(Note 5)

3.6

0 ≤ V ≤ 3.6V

O

2.7 − 3.6

±10

V = V or V

IL

I

IH

I

Power-OFF Leakage Current

Quiescent Supply Current

0 ≤ (V ) ≤ 3.6V

0

10

20

µA

OFF

CC

O

V = V or GND

2.7 − 3.6

I

CC

V

≤ (V ) ≤ 3.6V (Note 6)

±20

750

CC

O

∆I

Increase in I per Input

= V −0.6V

IH CC

CC

Note 4: An external driver must source at least the specified current to switch from LOW-to-HIGH.

Note 5: An external driver must sink at least the specified current to switch from HIGH-to-LOW.

Note 6: Outputs disabled or 3-STATE only.

3

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DC Electrical Characteristics (2.3V ≤ V ≤ 2.7V)

CC

V

(V)

CC

Symbol

Parameter

Conditions

Min

Max

Units

V

HIGH Level Input Voltage

2.3 − 2.7

2.3

1.6

V

IH

LOW Level Input Voltage

HIGH Level Output Voltage

0.7

IL

I

= −100 µA

V − 0.2

CC

V

OH

I

= −6 mA

= −12 mA

= −18 mA

= 100 µA

= 12 mA

= 18 mA

2.0

1.8

1.7

V

OH

I

2.3

V

OH

I

2.3

V

OH

V

LOW Level Output Voltage

Input Leakage Current

I

2.3 − 2.7

2.3

0.2

0.4

V

OL

I

V

OL

I

2.3

0.6

V

OL

I

Control Pins

Data Pins

0 ≤ V ≤ 3.6V

2.3 − 2.7

2.3

±5.0

µA

I

V = V or GND

I

CC

I

Bushold Input Minimum

Drive Hold Current

V

= 0.7V

45

-45

I(HOLD)

IN

µA

= 1.6V

2.3

I

Bushold Input Over-Drive

Current to Change State

3-STATE Output Leakage

(Note 7)

(Note 8)

2.7

300

−300

I(OD)

2.7

I

0 ≤ V ≤ 3.6V

O

OZ

2.3 − 2.7

±10

V = V or V

IL

I

IH

I

Power-OFF Leakage Current

Quiescent Supply Current

0 ≤ (V ) ≤ 3.6V

0

10

20

µA

OFF

O

I

V = V or GND

2.3 − 2.7

CC

I

CC

V

≤ (V ) ≤ 3.6V (Note 9)

±20

CC

O

Note 7: An external driver must source at least the specified current to switch from LOW-to-HIGH.

Note 8: An external driver must sink at least the specified current to switch from HIGH-to-LOW.

Note 9: Outputs disabled or 3-STATE only.

DC Electrical Characteristics (1.65V ≤ V < 2.3V)

CC

V

(V)

CC

Symbol

Parameter

Conditions

Min

Max

Units

V

HIGH Level Input Voltage

1.65 - 2.3 0.65 × V

V

IH

CC

LOW Level Input Voltage

HIGH Level Output Voltage

1.65 - 2.3

0.35 × V

IL

CC

I

= −100 µA

1.65 - 2.3

1.65

V − 0.2

CC

V

OH

I

= −6 mA

= 100 µA

= 6 mA

1.25

V

OH

V

LOW Level Output Voltage

Input Leakage Current

I

1.65 - 2.3

1.65

0.2

0.3

V

OL

I

V

OL

I

Control Pins

Data Pins

0 ≤ V ≤ 3.6V

1.65 - 2.3

1.65

±5.0

µA

I

V = V or GND

I

CC

I

Bushold Input Minimum

Drive Hold Current

V

= 0.57V

25

-25

I(HOLD)

IN

µA

= 1.07V

1.65

I

Bushold Input Over-Drive

Current to Change State

3-STATE Output Leakage

(Note 10)

(Note 11)

1.95

200

−200

I(OD)

1.95

I

0 ≤ V ≤ 3.6V

O

OZ

1.65 - 2.3

±10

V = V or V

IL

I

IH

I

Power-OFF Leakage Current

Quiescent Supply Current

0 ≤ (V ) ≤ 3.6V

0

10

20

µA

OFF

O

I

V = V or GND

1.65 - 2.3

CC

I

CC

V

≤ (V ) ≤ 3.6V (Note 12)

±20

CC

O

Note 10: An external driver must source at least the specified current to switch from LOW-to-HIGH.

Note 11: An external driver must sink at least the specified current to switch from HIGH-to-LOW.

Note 12: Outputs disabled or 3-STATE only.

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4

AC Electrical Characteristics (Note 13)

T

= −40°C to +85°C, C = 30 pF, R = 500Ω

A

L

Symbol

Parameter

V

= 3.3V ± 0.3V

V

= 2.5V ± 0.2V

V = 1.8V ± 0.15V

CC

Units

CC

Min

250

0.8

1.5

1.0

1.5

Max

Min

200

1.0

1.5

1.0

1.5

Max

Min

100

1.5

2.5

1.0

4.0

Max

f

t

Maximum Clock Frequency

MHz

ns

MAX

, t

Prop Delay CP to O

3.0

3.5

3.9

4.6

3.8

7.8

9.2

6.8

PHL PLH

n

, t

Output Enable Time

Output Disable Time

Setup Time

ns

PZL PZH

, t

ns

PLZ PHZ

ns

S

Hold Time

ns

H

Pulse Width

ns

W

Output to Output Skew

(Note 14)

OSHL

OSLH

0.5

0.75

ns

Note 13: For C = 50 F, add approximately 300 ps to the AC maximum specification.

L

P

Note 14: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The

specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t

) or LOW-to-HIGH (t

).

OSLH

OSHL

Dynamic Switching Characteristics

T

= +25°C

V

(V)

A

CC

Symbol

Parameter

Conditions

= 30 pF, V = V , V = 0V

Units

Typical

0.25

0.6

V

Quiet Output Dynamic Peak V

C

1.8

2.5

3.3

1.8

2.5

3.3

1.8

2.5

3.3

OLP

OL

L

IH

CC

IL

V

0.8

Quiet Output Dynamic Valley V

= 30 pF, V = V , V = 0V

−0.25

−0.6

−0.8

1.5

OLV

OL

IH

CC

IL

V

= 30 pF, V = V , V = 0V

OHV

OH

IH

CC

IL

1.9

2.2

Capacitance

T

= +25°C

A

Symbol

Parameter

Conditions

= 1.8V, 2.5V or 3.3V, V = 0V or V

CC

Units

Typical

C

Input Capacitance

Output Capacitance

Power Dissipation Capacitance

V

6

7

pF

IN

CC

I

C

V = 0V or V , V = 1.8V, 2.5V or 3.3V

I CC CC

OUT

PD

V = 0V or V , f = 10 MHz,

I

CC

20

pF

V

= 1.8V, 2.5V or 3.3V

CC

5

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AC Loading and Waveforms

TEST

SWITCH

t_PLH, t_PHL

Open

t_PZL, t_PLZ

6V at V_CC= 3.3 ± 0.3V;

V_CCx 2 at V_CC= 2.5 ± 0.2V; 1.8V ± 0.15V

t_PZH, t_PHZ

GND

FIGURE 1. AC Test Circuit

FIGURE 3. 3-STATE Output High Enable and

Disable Times for Low Voltage Logic

FIGURE 2. Waveform for Inverting and

Non-Inverting Functions

FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic

FIGURE 6. Setup Time, Hold Time and

Recovery Time for Low Voltage Logic

FIGURE 5. Propagation Delay, Pulse Width and

t_RECWaveforms

V_CC

Symbol

3.3V ± 0.3V

1.5V

2.5V ± 0.2V

V_CC/2

1.8V ± 0.15V

V_CC/2

V_mi

V_mo

V_X

1.5V

V_CC/2

V

_OL+0.3V

V

_OL+0.15V

V

_OL+0.15V

V_Y

V

_OH−0.3V

V

_OH−0.15V

V_OH−0.15V

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6

Physical Dimensions inches (millimeters) unless otherwise noted

48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Body Width

Package Number MTD48

Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and

Fairchild reserves the right at any time without notice to change said circuitry and specifications.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD

SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the

body, or (b) support or sustain life, and (c) whose failure

to perform when properly used in accordance with

instructions for use provided in the labeling, can be rea-

sonably expected to result in a significant injury to the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be rea-

sonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

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7

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型号：	74VCXH16374MTD
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Low Voltage 16-Bit D-Type Flip-Flop with Bushold 低电压16位D型触发器与Bushold 触发器
文件：	总7页 (文件大小：88K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

74VCXH16374MTD [FAIRCHILD]

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