54ABT646D

更新时间： 2024-02-01 19:39:56

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
14页	322K
描述
Octal Transceivers and Registers with TRI-STATE Outputs

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技术参数
数据手册

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54ABT646D 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.78
Is Samacsys：	N	Base Number Matches：	1

54ABT646D 数据手册

DC Electrical Characteristics (Continued)

Note 4: For 8-bit toggling, I

1.4 mA/MHz.

CCD

Note 5: Guaranteed but not tested.

AC Electrical Characteristics

54ABT

T_A−55˚C to +125˚C

Fig.

No.

Symbol

Parameter

V_CC4.5V–5.5V

Units

C_L50 pF

Min

125

2.2

1.7

1.5

1.0

1.9

1.5

1.0

2.2

1.5

Max

f_max

Max Clock Frequency

Propagation Delay

Clock to Bus

MHz

t_PLH

t_PHL

t_PLH

t_PHL

t_PLH

t_PHL

t_PZH

t_PZL

t_PHZ

t_PLZ

t_PZH

t_PZL

t_PHZ

t_PLZ

8.8

7.9

8.1

8.9

7.3

8.8

9.3

7.7

9.5

8.7

9.2

Figure 8

Figure 10

Propagation Delay

Bus to Bus

Propagation Delay

SBA or SAB to A_nto B_n

Enable Time

OE to A_nor B_n

Disable Time

OE to A_nor B_n

Enable Time

DIR to A_nor B_n

Disable Time

DIR to A_nor B_n

AC Operating Requirements

54ABT

T_A−55˚C to +125˚C

Fig.

No.

Symbol

Parameter

V_CC4.5V–5.5V

Units

C_L50 pF

Min

Max

t_S(H)

Setup Time, HIGH

3.5

1.0

4.0

Figure 11

Figure 9

t_S(L)

t_H(H)

t_H(L)

or LOW Bus to Clock

Hold Time, HIGH

or LOW Bus to Clock

Pulse Width,

t_W(H)

t_W(L)

HIGH or LOW

Capacitance

Symbol

Parameter

Typ

Units

Conditions

T_A25˚C

V_CC0V (non I/O pins)

C_IN

C_I/O(Note 6)

Input Capacitance

Output Capacitance

V_CC5.0V (A_n, B_n)

C is measured at frequency, f 1 MHz, per MIL-STD-883B, Method 3012.

I/O

Note 6:

www.national.com

1...3 4 567 8 9...14

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