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MC74LVQ138 Datasheet, PDF (1/8 Pages) Motorola, Inc – LOW-VOLTAGE CMOS DECODER/DEMULTIPLEXER | |||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Low-Voltage Quiet CMOS
1-of-8 Decoder/Demultiplexer
The MC74LVQ138 is a high performance, 1âofâ8 decoder/
demultiplexer operating from a 2.7 to 3.6V supply. High impedance TTL
compatible inputs significantly reduce current loading to input drivers
while TTL compatible outputs offer improved switching noise
performance. The MC74LVQ138 is suitable for memory address
decoding and other TTL level bus oriented applications.
The MC74LVQ138 highâspeed 1âofâ8 decoder/demultiplexer accepts
three binary weighted inputs (A0, A1, A2) and, when enabled, provides
eight mutually exclusive activeâLOW outputs (O0âO7). The LVQ138
features three Enable inputs, two activeâLOW (E1, E2) and one
activeâHIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW,
and E3 is HIGH. This multiple enabled function allows easy parallel
expansion of the device to a 1âofâ32 (5 lines to 32 lines) decoder with just
four LVQ138 devices and one inverter (See Figure 1). The LVQ138 can
be used as an 8âoutput demultiplexer by using one of the activeâLOW
Enable inputs as the data input and the other Enable inputs as strobes.
The Enable inputs which are not used must be permanently tied to their
appropriate activeâHIGH or activeâLOW state.
Current drive capability is 12mA at the outputs.
⢠Designed for 2.7 to 3.6V VCC Operation â Ideal for Low Power/Low
Noise Applications
⢠Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
⢠Guaranteed Skew Specifications
⢠Guaranteed Incident Wave Switching into 75â¦
⢠Low Static Supply Current (10µA) Substantially Reduces System Power
Requirements
⢠Latchup Performance Exceeds 500mA
⢠ESD Performance: Human Body Model >2000V
MC74LVQ138
LVQ
LOWâVOLTAGE CMOS
DECODER/DEMULTIPLEXER
16
1
16
1
16
1
16
1
D SUFFIX
PLASTIC SOIC
CASE 751Bâ05
M SUFFIX
PLASTIC SOIC EIAJ
CASE 966â01
SD SUFFIX
PLASTIC SSOP
CASE 940Bâ03
DT SUFFIX
PLASTIC TSSOP
CASE 948Fâ01
Pinout: 16âLead Plastic Package (Top View)
VCC O0 O1 O2 O3 O4 O5 O6
16 15 14 13 12 11 10 9
12345678
A0 A1 A2 E1 E2 E3 O7 GND
PIN NAMES
Pins
A0âA2
E1âE2
E3
O0âO7
Function
Address Inputs
Enable Inputs
Enable Input
Outputs
1/96
© Motorola, Inc. 1996
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