74HCT257D NXP Semiconductors, 74HCT257D Datasheet - Page 8

• Manufacturer Part Number: 74HCT257D
• Description: IC, LOGIC, 74HCT, MULTIPLEXER, SO16
• Manufacturer: NXP Semiconductors

Specifications of 74HCT257D

• Logic Type: Multiplexer
• No. Of Outputs: 4
• Supply Voltage Range: 4.5V To 5.5V
• Logic Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (18-Jun-2010)
• Package: RoHS Compliant
• Logic Ic Base Number: 74257
• Rohs Compliant: Yes

NXP Semiconductors
Table 7.
Voltages are referenced to GND (ground = 0 V); For test circuit see
[1]
[2]
[3]
[4]
[5]
74HC_HCT257_5
Product data sheet
Symbol Parameter
t
C
74HCT257
t
t
t
t
C
t
pd
en
dis
t
PD
PD
t
t
t
t
C
P
f
f
C
V
N = number of inputs switching;
∑(C
pd
en
dis
t
i
o
D
CC
is the same as t
PD
= input frequency in MHz;
L
= output frequency in MHz;
is the same as t
is the same as t
= output load capacitance in pF;
= C
is the same as t
L
is used to determine the dynamic power dissipation (P
= supply voltage in V;
× V
transition time
power dissipation
capacitance
propagation delay
enable time
disable time
transition time
power dissipation
capacitance
PD
Dynamic characteristics
CC
× V
2
× f
CC
o
2
) = sum of outputs.
× f
THL
PHL
PZH
PHZ
i
, t
× N + ∑(C
, t
, t
, t
TLH
PLH
PZL
PLZ
.
.
.
.
L
× V
Conditions
see
per multiplexer;
V
nl0 to nY or nl1 to nY;
see
S to nY; see
OE to nY; V
see
OE to nY; V
see
V
per multiplexer;
V
I
CC
I
CC
V
V
V
V
V
V
V
= GND to V
= GND to V
CC
CC
CC
CC
CC
CC
CC
…continued
2
Figure 6
Figure 6
Figure 7
Figure 7
= 4.5 V; see
× f
= 2.0 V
= 4.5 V
= 6.0 V
= 4.5 V
= 5.0 V; C
= 4.5 V
= 5.0 V; C
o
) where:
CC
CC
Figure 6
CC
CC
= 4.5 V;
= 4.5 V;
Rev. 05 — 13 January 2010
L
L
Figure 6
= 15 pF
= 15 pF
D
in μW).
Figure
[4]
[5]
[1]
[2]
[3]
[4]
[5]
8.
74HC257; 74HCT257
Typ
14
45
16
13
20
17
15
16
45
5
4
5
25 °C
Max
Quad 2-input multiplexer; 3-state
60
12
10
30
35
30
30
12
-
-
-
-
−40 °C to
+85 °C
Max
75
15
13
38
44
38
38
15
-
© NXP B.V. 2010. All rights reserved.
−40 °C to
+125 °C
Max
90
18
15
45
53
45
45
18
Unit
ns
ns
ns
pF
ns
ns
ns
ns
ns
ns
ns
pF
8 of 17