Datasheet > 74HC670PW-T

74HC670PW-T

更新时间： 2023-04-15 00:00:00

品牌	Logo	应用领域
恩智浦 - NXP		静态存储器光电二极管
页数	文件大小	规格书
9页	79K
描述
IC 4 X 4 STANDARD SRAM, 59 ns, PDSO16, Static RAM

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74HC670PW-T 数据手册

Philips Semiconductors

Product speciﬁcation

4 x 4 register ﬁle; 3-state

74HC/HCT670

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; t_r= t_f= 6 ns; C_L= 50 pF

T_amb(°C)

TEST CONDITIONS

74HCT

SYMBOL

PARAMETER

UNIT

V_CC

(V)

+25

−40 to +85 −40 to +125

WAVEFORMS

min. typ. max. min. max. min. max.

t_PHL/ t_PLHpropagation delay

R_A, R_Bto Q_n

4.5 Fig.6

4.5 Fig.7

4.5 Fig.9

4.5 Fig.6

4.5 Fig.8

_PHL/ t_PLHpropagation delay

WE to Q_n

_PHL/ t_PLHpropagation delay

D_nto Q_n

t_PZH/ t_PZL3-state output enable time

RE to Q_n

_PHZ/ t_PLZ3-state output disable time

RE to Q_n

_THL/ t_TLHoutput transition time

t_W

t_su

t_h

write enable pulse width

LOW

set-up time

D_nto WE

set-up time

W_A, W_Bto WE

−2

−1

hold time

D_nto WE

t_h

hold time

W_A, W_Bto WE

t_latch

latch time

WE to R_A, R_B

December 1990

1...4 5 678 9

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