Datasheet > 74HC195N

74HC195N

更新时间： 2023-02-15 00:00:00

品牌	Logo	应用领域
恩智浦 - NXP		光电二极管输出元件
页数	文件大小	规格书
9页	67K
描述
IC HC/UH SERIES, 4-BIT RIGHT PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDIP16, Shift Register

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74HC195N 数据手册

Philips Semiconductors

Product speciﬁcation

4-bit parallel access shift register

74HC/HCT195

Fig.4 Functional diagram.

APPLICATIONS

• Serial data transfer

• Parallel data transfer

• Serial-to-parallel data transfer

• Parallel-to-serial data transfer

FUNCTION TABLE

INPUTS

OUTPUTS

OPERATING MODES

D_n

Q₀

Q₁

Q₂

Q₃

asynchronous reset

shift, set ﬁrst stage

↑

shift, reset ﬁrst stage

shift, toggle ﬁrst stage

shift, retain ﬁrst stage

parallel load

↑

d_n

d₀

d₁

d₂

d₃

Notes

1. H = HIGH voltage level

h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition

L = LOW voltage level

I = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition

q, d = lower case letters indicate the state of the referenced input (or output) one set-up time prior to the

LOW-to-HIGH clock transition

X = don’t care

↑ = LOW-to-HIGH clock transition

December 1990

1 2 345 6 7...9

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