SN74LV138AT
3-LINE TO 8-LINE DECODER/DEMULTIPLEXER
www.ti.com
SCLS691–AUGUST 2005
FEATURES
•
•
•
•
Inputs Are TTL-Voltage Compatible
4.5-V to 5.5-V VCC Operation
Max tpd of 7.6 ns at 5 V
•
•
•
Ioff Supports Partial-Power Down Mode
Operation
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 5 V, TA = 25°C
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
•
•
Typical VOHV (Output VOH Undershoot)
>2.3 V at VCC = 5 V, TA = 25°C
Support Mixed-Mode Voltage Operation on All
Ports
– 1000-V Charged-Device Model (C101)
D, DB, DGV, NS, OR PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
A
B
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
Y0
Y1
Y2
1
16
C
15
14
13
12
11
10
B
C
G2A
G2B
G1
2
3
4
5
6
7
Y0
Y1
Y2
Y3
Y4
Y5
G2A
G2B
G1
12 Y3
11
10
9
Y4
Y5
Y6
Y7
GND
Y7
8
9
DESCRIPTION/ORDERING INFORMATION
The SN74LV138AT is a 3-line to 8-line decoder/demultiplexer, designed for high-performance memory-decoding
or data-routing applications requiring very short propagation delay times. In high-performance memory systems,
this decoder can be used to minimize the effects of system decoding. When employed with high-speed memories
utilizing a fast enable circuit, the delay times of the decoder and the enable time of the memory usually are less
than the typical access time of the memory. This means that the effective system delay introduced by the
decoder is negligible.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
SN74LV138ATRGYR
SN74LV138ATD
TOP-SIDE MARKING
VV138AT
QFN – RGY
SOIC – D
Reel of 1000
Tube of 40
LV138AT
Reel fo 2500
Reel of 2000
Reel of 2000
Reel of 2000
Tube of 90
SN74LV138ATDR
SOP – NS
SN74LV138ATNSR
SN74LV138ATDBR
SN74LV138ATDGVR
SN74LV138ATPW
74LV138AT
LV138AT
LV138AT
–40°C to 125°C
SSOP – DB
TVSOP – DGV
TSSOP – PW
Reel of 2000
Reel of 250
SN74LV138ATPWR
SN74LV138ATPWT
LV138AT
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.