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參數(shù)資料
| 型號： | SN54AHCT257FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS |
| 中文描述： | 四2線1線數(shù)據(jù)選擇器/多路復(fù)用3態(tài)輸出 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大小： | 109K |
| 代理商： | SN54AHCT257FK |
SN54AHCT257, SN74AHCT257
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
WITH 3-STATE OUTPUTS
SCLS351E – MAY 1996 – REVISED OCTOBER 1998
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
±
0.5 V (unless otherwise noted) (see Figure 1)
FROM
(INPUT)
TO
LOAD
SN74AHCT257
TA = 25
°
C
TYP
PARAMETER
(OUTPUT)
CAPACITANCE
MIN
MAX
UNIT
MIN
MAX
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPLH
tPHL
tPLH
tPLH
tPZH
tPZL
tPHZ
tPLZ
A or B
Y
CL= 15 pF
CL = 15 pF
ns
A/B
Y
CL= 15 pF
CL = 15 pF
ns
OE
Y
CL= 15 pF
CL = 15 pF
ns
OE
Y
CL= 15 pF
CL = 15 pF
ns
A or B
Y
CL= 50 pF
CL = 50 pF
ns
A/B
Y
CL= 50 pF
CL = 50 pF
ns
OE
Y
CL= 50 pF
CL = 50 pF
ns
OE
Y
CL= 50 pF
CL = 50 pF
ns
noise characteristics V
CC
= 5 V, C
L
= 50 pF, T
A
= 25
°
C (see Note 4)
PARAMETER
SN74AHCT257
UNIT
MIN
TYP
MAX
VOL(P)
VOL(V)
VOH(V)
VIH(D)
VIL(D)
NOTE 4: Characteristics are for surface-mount packages only.
Quiet output, maximum dynamic VOL
Quiet output, minimum dynamic VOL
Quiet output, minimum dynamic VOH
High-level dynamic input voltage
V
V
V
V
Low-level dynamic input voltage
V
operating characteristics, V
CC
= 5 V, T
A
= 25
°
C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
pF
P
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