74ALS157 Datasheet, PDF (4/9 Pages) NXP Semiconductors – Data selector/multiplexer

Philips Semiconductors
Data selector/multiplexer
Product specification
74ALS157/74ALS158
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
V_CC
V_IN
I_IN
V_OUT
I_OUT
T_amb
T_stg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to V_CC
16
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
V_CC
V_IH
V_IL
I_Ik
I_OH
I_OL
T_amb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
LIMITS
MIN NOM MAX
4.5
5.0
5.5
2.0
0.8
–18
–0.4
8
0
+70
UNIT
V
V
V
mA
mA
mA
°C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS¹
LIMITS
MIN TYP² MAX
UNIT
V_OH
High-level output voltage
V_OL
Low-level output voltage
V_CC = ±10%, V_IL = MAX,
V_IH = MIN
V_CC = MIN, V_IL = MAX,
V_IH = MIN
I_OH = MAX V_CC – 2
V
I_OL = 4mA
I_OL = 8mA
0.25 0.40
V
0.35 0.50
V
V_IK
Input clamp voltage
V_CC = MIN, I_I = I_IK
–0.73 –1.5
V
I_I
Input current at minimum input voltage V_CC = MAX, V_I = 7.0V
I_IH
High-level input current
V_CC = MAX, V_I = 2.7V
I_IL
Low-level input current
I_O
Output current³
V_CC = MAX, V_I = 0.4V
V_CC = MAX, V_O = 2.25V
0.1
mA
20
µA
–0.1
mA
–30
–112 mA
I_CC
Supply current (total)
74ALS157
74ALS158
V_CC = MAX
6
11
mA
6
10
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V_CC = 5V, T_amb = 25°C.
3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I_OS.
1991 Feb 08
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