74lv157db NXP Semiconductors, 74lv157db Datasheet - Page 2

• Manufacturer Part Number: 74lv157db
• Description: Quad 2-input Multiplexer
• Manufacturer: NXP Semiconductors

1. C
Philips Semiconductors
FEATURES
DESCRIPTION
The 74LV157 is a low-voltage CMOS device and is pin and function
compatible with 74HC/HCT157.
The 74LV157 is a quad 2-input multiplexer which selects 4 bits of data
from two sources under the control of a common data select input (S).
QUICK REFERENCE DATA
GND = 0 V; T
NOTES:
ORDERING INFORMATION
16-Pin Plastic DIL
16-Pin Plastic SO
16-Pin Plastic SSOP Type II
16-Pin Plastic TSSOP Type I
1998 Apr 30
Optimized for low voltage applications: 1.0 to 3.6 V
Accepts TTL input levels between V
Typical V
T
Typical V
T
Output capability: standard
I
Quad 2-input multiplexer
CC
P
f
f
amb
amb
i
o
PD
D
= input frequency in MHz; C
= output frequency in MHz; V
(C
category: MSI
= C
= 25 C
= 25 C
SYMBOL
t
L
is used to determine the dynamic power dissipation (P
PHL
C
PD
OLP
OHV
C
V
PD
/t
PACKAGES
I
CC
amb
PLH
V
(output ground bounce) < 0.8 V at V
2
(output V
CC
= 25 C; t
f
2
o
) = sum of the outputs.
f
i
) (C
OH
Propagation delay
nl
E to nY
S to nY
Input capacitance
Power dissipation capacitance per gate
r
= t
0
undershoot) > 2 V at V
, nl
f
1
L
, to nY
L
2.5 ns
= output load capacitance in pF;
CC
V
CC
CC
= supply voltage in V;
PARAMETER
2
TEMPERATURE RANGE
= 2.7 V and V
f
o
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
) where:
CC
CC
= 3.3 V,
= 3.3 V,
CC
= 3.6 V
D
in W)
OUTSIDE NORTH AMERICA
C
V
V
L
CC
I
= GND to V
2
= 15 pF;
= 3.3 V
The four outputs present the selected data in the true (non-inverted)
form. The enable input (E) is active LOW. When E is HIGH, all of the
outputs (1Y to 4Y) are forced LOW regardless of all other input
conditions.
Moving the data from two groups of registers to four common output
buses is a common use of the 74LV157. The state of the common
data select input (S) determines the particular register from which
the data comes. It can also be used as function generator.
The device is useful for implementing highly irregular logic by
generating any four of the 16 different functions of two variables with
one variable common.
The 74LV157 is the logic implementation of a 4-pole, 2-position
switch, where the position of the switch is determined by the logic
levels applied to S.
74LV157 DB
74LV157 PW
CONDITIONS
74LV157 N
74LV157 D
CC
1
NORTH AMERICA
74LV157PW DH
74LV157 DB
74LV157 N
74LV157 D
TYPICAL
3.5
10
11
12
70
Product specification
74LV157
853–1920 19318
PKG. DWG. #
SOT109-1
SOT338-1
SOT403-1
SOT38-4
UNIT
pF
pF
ns