MC74VHC138
3--to--8 Line Decoder
The MC74VHC138 is an advanced high speed CMOS 3--to--8
decoder fabricated with silicon gate CMOS technology. It achieves
high speed operation similar to equivalent Bipolar Schottky TTL
while maintaining CMOS low power dissipation.
When the device is enabled, three Binary Select inputs (A0 -- A2)
determine which one of the outputs (Y0 -- Y 7 ) will go Low. When
enable input E3 is held Low or either E2 or E1 is held High, decoding
function is inhibited and all outputs go high. E3, E2, and E1 inputs are
provided to ease cascade connection and for use as an address decoder
for memory systems.
http://onsemi.com
MARKING DIAGRAMS
16
9
VHC138
AWLYYWW
SOIC--16
D SUFFIX
CASE 751B
1
8
The internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output. The
inputs tolerate voltages up to 7V, allowing the interface of 5V systems
to 3V systems.
16
9
VHC
138
AWLYWW
TSSOP--16
DT SUFFIX
CASE 948F
• High Speed: tPD = 5.7ns (Typ) at VCC = 5V
• Low Power Dissipation: ICC = 4μA (Max) at TA = 25°C
• High Noise Immunity: VNIH = VNIL = 28% VCC
• Power Down Protection Provided on Inputs
• Balanced Propagation Delays
1
8
16
9
• Designed for 2V to 5.5V Operating Range
• Low Noise: VOLP = 0.8 V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300mA
• ESD Performance: HBM > 2000V; Machine Model > 200V
• Chip Complexity: 122 FETs or 30.5 Equivalent Gates
VHC138
ALYW
SOIC EIAJ--16
M SUFFIX
CASE 966
1
8
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
• These devices are available in Pb--free package(s). Specifications herein
apply to both standard and Pb--free devices. Please see our website at
www.onsemi.com for specific Pb--free orderable part numbers, or
contact your local ON Semiconductor sales office or representative.
A
= Assembly Location
WL = Wafer Lot
= Year
WW = Work Week
A
L
Y
= Assembly Location
= Wafer Lot
= Year
Y
W = Work Week
ORDERING INFORMATION
Device
Package
Shipping
48 Units/Rail
MC74VHC138D
MC74VHC138DR2
MC74VHC138DT
SOIC--16
SOIC--16 2500 Units/Reel
TSSOP--16 96 Units/Rail
MC74VHC138DTR2 TSSOP--16 2500 Units/Reel
SOIC
MC74VHC138M
48 Units/Rail
EIAJ--16
SOIC
EIAJ--16
MC74VHC138MEL
2000 Units/Reel
©
Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
March, 2006 -- Rev. 4
MC74VHC138/D