74LVX157 ,LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTSAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
74LVX157 ,LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS
74LVX157M ,LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTSapplicationscommon Select and Enable inputs. The four outputs
74LVX157
LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER WITH 5V TOLERANT INPUTS
1/12August 2004 HIGH SPEED:
tPD = 5.1 ns (TYP.) at VCC = 3.3V 5V TOLERANT INPUTS INPUT VOLTAGE LEVEL:
VIL=0.8V, VIH=2V at VCC=3V LOW POWER DISSIPATION:
ICC = 2 μA (MAX.) at TA=25°C LOW NOISE: OLP = 0.3V (TYP.) at VCC = 3.3V SYMMETRICAL OUTPUT IMPEDANCE:OH | = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157 IMPROVED LATCH-UP IMMUNITY POWER DOWN PROTECTION ON INPUTS
DESCRIPTIONThe 74LVX157 is a low voltage CMOS QUAD 2
CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C2 MOS technology. It is ideal for low
power, battery operated and low noise 3.3V
applications.
It consists of four 2-input digital multiplexers with
common select and strobe inputs. When STROBE
input is held high, selection of data is inhibited and
all the outputs become low. The SELECT
decoding determines whether the A or B inputs
get routed to their corresponding Y outputs.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V
system. It combines high speed performance with
the true CMOS low power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74LVX157LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER
WITH 5V TOLERANT INPUTS
Figure 1: Pin Connection And IEC Logic Symbols
Table 1: Order Codes Rev. 3
74LVX1572/12
Figure 2: Input Equivalent Circuit Table 2: Pin Description
Table 3: Truth Table X : Don’t Care
Table 4: Absolute Maximum Ratings Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Table 5: Recommended Operating Conditions 1) Truth Table guaranteed: 1.2V to 3.6V
2) VIN from 0.8V to 2.0V
74LVX1573/12
Table 6: DC Specifications
Table 7: Dynamic Switching Characteristics 1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
74LVX1574/12
Table 8: AC Electrical Characteristics (Input tr = tf = 3ns)
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ± 0.3V
Table 9: Capacitive Characteristics 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/n (per circuit)
74LVX1575/12
Figure 3: Test Circuit CL =15/50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
Figure 4: Waveform - Propagation Delays For Inverting Conditions (f=1MHz; 50% duty cycle)
74LVX1576/12
Figure 5: Waveform- Propagation Delays For Non-inverting Conditions (f=1MHz; 50% duty cycle)
