74HC257D View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
74HC257D Datasheet PDF : 17 Pages
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NXP Semiconductors
74HC257; 74HCT257
Quad 2-input multiplexer; 3-state
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Max
Unit
VCC
supply voltage
−0.5
+7
V
IIK
input clamping current
VI < −0.5 V or
VI > VCC + 0.5 V
-
±20
mA
IOK
output clamping current
VO < −0.5 V or
VO > VCC + 0.5 V
-
±20
mA
IO
output current
VO = −0.5 V to VCC + 0.5 V
-
±35
mA
ICC
IGND
Tstg
supply current
ground current
storage temperature
-
+70
mA
-
−70
mA
−65
+150
°C
Ptot
total power dissipation
DIP16 package
[1] -
750
mW
SO16 package
[2] -
500
mW
SSOP16 package
[3] -
500
mW
TSSOP16 package
[3] -
500
mW
[1] For DIP16 packages: above 70 °C, Ptot derates linearly with 12 mW/K.
[2] For SO16 packages: above 70 °C, Ptot derates linearly with 8 mW/K.
[3] For SSOP16 and TSSOP16 packages: above 60 °C, Ptot derates linearly with 5.5 mW/K.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Symbol
Parameter
Conditions
Type 74HC257
VCC
VI
VO
Δt/ΔV
supply voltage
input voltage
output voltage
input transition rise and
fall rates
Tamb
ambient temperature
Type 74HCT257
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
VCC
VI
VO
Δt/ΔV
supply voltage
input voltage
output voltage
input transition rise and
fall rates
VCC = 4.5 V
Tamb
ambient temperature
Min
Typ
Max
Unit
2.0
5.0
6.0
V
0
-
0
-
-
-
VCC
V
VCC
V
625
ns
-
1.67
139
ns
-
-
83
ns
−40
-
+125
°C
4.5
5.0
5.5
V
0
-
VCC
V
0
-
VCC
V
-
1.67
139
ns
−40
-
+125
°C
74HC_HCT257_5
Product data sheet
Rev. 05 — 13 January 2010
© NXP B.V. 2010. All rights reserved.
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