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参数资料
| 型号： | SN54AHCT257W |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AHC SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, CDFP16 |
| 封装： | CERAMIC, FP-16 |
| 文件页数： | 5/7页 |
| 文件大小： | 112K |
| 代理商： | SN54AHCT257W |
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,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
FROM
TO
LOAD
SN74AHCT257
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
tPLH
AorB
Y
CL =15 pF
ns
tPHL
A or B
Y
CL = 15 pF
ns
tPLH
A/B
Y
CL =15 pF
ns
tPHL
A/B
Y
CL = 15 pF
ns
tPZH
OE
Y
CL =15 pF
ns
tPZL
OE
Y
CL = 15 pF
ns
tPHZ
OE
Y
CL =15 pF
ns
tPLZ
OE
Y
CL = 15 pF
ns
tPLH
AorB
Y
CL =50 pF
ns
tPHL
A or B
Y
CL = 50 pF
ns
tPLH
A/B
Y
CL =50 pF
ns
tPLH
A/B
Y
CL = 50 pF
ns
tPZH
OE
Y
CL =50 pF
ns
tPZL
OE
Y
CL = 50 pF
ns
tPHZ
OE
Y
CL =50 pF
ns
tPLZ
OE
Y
CL = 50 pF
ns
noise characteristics VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4)
PARAMETER
SN74AHCT257
UNIT
PARAMETER
MIN
TYP
MAX
UNIT
VOL(P)
Quiet output, maximum dynamic VOL
V
VOL(V)
Quiet output, minimum dynamic VOL
V
VOH(V)
Quiet output, minimum dynamic VOH
V
VIH(D)
High-level dynamic input voltage
V
VIL(D)
Low-level dynamic input voltage
V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
pF
PRODUCT
PREVIEW
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