74LVQ157_04 Datasheet, PDF (1/12 Pages) STMicroelectronics – LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER

74LVQ157
LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER
s HIGH SPEED:
t_PD = 7 ns (TYP.) at V_CC = 3.3 V
s COMPATIBLE WITH TTL OUTPUTS
s LOW POWER DISSIPATION:
I_CC = 4 µA (MAX.) at T_A=25°C
s LOW NOISE:
V_OLP = 0.2V (TYP.) at V_CC = 3.3V
s 75Ω TRANSMISSION LINE OUTPUT DRIVE
CAPABILITY
s SYMMETRICAL OUTPUT IMPEDANCE:
|I_OH| = I_OL = 12mA (MIN) at V_CC = 3.0 V
s PCI BUS LEVELS GUARANTEED AT 24 mA
s BALANCED PROPAGATION DELAYS:
t_PLH ≅ t_PHL
s OPERATING VOLTAGE RANGE:
V_CC(OPR) = 2V to 3.6V (1.2V Data Retention)
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
s IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVQ157 is a low voltage CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C²MOS technology. It is ideal for low power
and low noise 3.3V applications.
SOP
TSSOP
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74LVQ157MTR
74LVQ157TTR
It consists of four 2-input digital multiplexers with
common select and strobe inputs. When STROBE
input is held high selection of data is inhibit and all
the outputs become low. The SELECT decoding
determines whether the A or B inputs get routed to
their corresponding Y outputs.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Figure 1: Pin Connection And IEC Logic Symbols
July 2004
Rev. 5
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