MC54F399 [MOTOROLA]

QUAD 2-PORT REGISTER FAST SCHOTTKY TTL; QUAD 2端口寄存器FAST肖特基TTL


型号：	MC54F399
厂家：	MOTOROLA
描述：	QUAD 2-PORT REGISTER FAST SCHOTTKY TTL QUAD 2端口寄存器FAST肖特基TTL
文件：	总3页 (文件大小：68K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MC54/74F399

QUAD 2-PORT REGISTER

The MC54/74F399 is the logical equivalent of a quad 2-input multiplexer

feeding into four edge-triggered flip flops. A common Select input determines

which of the two 4-bit words is accepted. The selected data enters the flip-

flops on the rising edge of the clock. The MC54/74F399 is the 16-pin version

of the MC54/74F398, with only the Q outputs of the flip-flops available.

QUAD 2-PORT REGISTER

FAST SCHOTTKY TTL

• Select Inputs from Two Data Sources

• Fully Positive Edge-Triggered Operation

CONNECTION DIAGRAM (TOP VIEW)

J SUFFIX

CERAMIC

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

GND

LOGIC DIAGRAM

D SUFFIX

SOIC

CASE 751B-03

ORDERING INFORMATION

MC54FXXXJ

Ceramic

MC74FXXXN Plastic

MC74FXXXD SOIC

LOGIC SYMBOL

5 11 12 14 13

0a 1a 0b 1b 0c 1c 0d 1d

= PIN 16

NOTE:

GND = PIN 8

This diagram is provided only for the understanding of logic operations and

should not be used to estimate propagation delays.

FAST AND LS TTL DATA

4-192

MC54/74F399

FUNCTIONAL DESCRIPTION

The MC54/74F398 is a high-speed quad 2-port register. It

type output register is fully edge-triggered. The Data inputs

will select four bits of data from either of two sources (Ports)

under control of a common Select input (S). The selected data

is transferred to a 4-bit output register synchronous with the

LOW-to-HIGH transition of the Clock input (CP). The 4-bit D-

(I , I ) and Select input (S) must be stable only a setup time

prior to and hold time after the LOW-to-HIGH transition of the

Clock input for predictable operation.

0x 1x

FUNCTION TABLE

Inputs

Output

H = HIGH Voltage Level

L = LOW Voltage Level

h = HIGH Voltage Level one setup time prior to the LOW-to-HIGH clock transition

I = LOW Voltage Level one setup time prior to the LOW-to-HIGH clock transition

X = Don’t Care

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

4.5

–55

Typ

5.0

Max

5.5

Unit

Supply Voltage

Operating Ambient Temperature Range

54, 74

125

°C

Output Current

High

Low

54, 74

– 1.0

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol

Parameter

Input HIGH Voltage

Min

Typ

Max

Unit

Test Conditions

Guaranteed Input HIGH Voltage

Guaranteed Input LOW Voltage

2.0

Input LOW Voltage

0.8

Input Clamp Diode Voltage

Output HIGH Voltage

–1.2

= –18 mA

= MIN

54, 74

2.5

2.7

3.4

= – 1.0 mA

= 20 mA

= 2.7 V

= 4.5 V

= 4.75 V

= MIN

Output LOW Voltage

Input HIGH Current

0.35

0.5

µA

= MAX

100

–0.6

–150

= 7.0 V

Input LOW Current

= 0.5 V

= MAX

Output Short Circuit Current (Note 2)

Power Supply Current

–60

= 0 V

OUT

= MAX

= GND

CP =

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under guaranteed operating ranges.

2. Not more than one output should be shorted at a time, nor for more than 1 second.

FAST AND LS TTL DATA

4-193

MC54/74F399

AC CHARACTERISTICS

54/74F

54F

74F

= + 25°C

= –55°C to +125°C

T = 0°C to 70°C

= +5.0V

= 5.0 V ± 10%

= 50 pF

Typ

= 50 pF

C = 50 pF

Symbol

Parameter

Min

100

3.0

Max

Min

Max

Min

100

3.0

Max

Unit

MHz

Maximum Clock Frequency

Propagation Delay

CP to Q

140

max

PLH

PHL

5.7

7.5

9.5

3.0

9.5

8.5

3.0

6.8

11.5

3.0

10.0

AC OPERATING REQUIREMENTS

54/74F

= +25°C

54F

= –55°C to + 125°C

74F

= 0°C to 70°C

= 5.0 V ± 10%

= +5.0V

= 5.0 V ± 10%

Symbol

t (H)

Parameter

Min

3.0

1.0

7.5

Typ

Max

Min

4.5

1.5

9.5

Max

Min

3.0

1.0

8.5

Max

Unit

Setup Time, HIGH or LOW

t (L)

I to CP

t (H)

Hold Time, HIGH or LOW

I to CP

t (L)

t (H)

Setup Time, HIGH or LOW

S to CP

t (L)

t (H)

Hold Time, HIGH or LOW

S to CP

t (L)

t (H)

CP Pulse Width

HIGH or LOW

4.0

5.0

4.0

7.0

4.0

5.0

t (L)

FAST AND LS TTL DATA

4-194

相关型号：