Datasheet

 
   
SCES340E − SEPTEMBER 2000 − REVISED APRIL 2005
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D 2-V to 5.5-V V
CC
Operation
D Max t
pd
of 6 ns at 5 V
D Typical V
OLP
(Output Ground Bounce)
<0.8 V at V
CC
= 3.3 V, T
A
= 25°C
D Typical V
OHV
(Output V
OH
Undershoot)
>2.3 V at V
CC
= 3.3 V, T
A
= 25°C
D I
off
Supports Partial-Power-Down Mode
Operation
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
description/ordering information
These dual 4-input positive-AND gates are
designed for 2-V to 5.5-V V
CC
operation.
The ’LV21A devices perform the Boolean function
Y + A • B • C • Dor Y+ A
) B ) C ) D
in
positive logic.
These devices are fully specified for
partial-power-down applications using I
off
. The I
off
circuitry disables the outputs, preventing
damaging current backflow through the devices
when they are powered down.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC − D
Tube of 50 SN74LV21AD
LV21A
SOIC − D
Reel of 2500 SN74LV21ADR
LV21A
SOP − NS Reel of 2000 SN74LV21ANSR 74LV21A
−40°C to 85°C
SSOP − DB Reel of 2000 SN74LV21ADBR LV21A
−40°C to 85°C
Tube of 90 SN74LV21APW
TSSOP − PW
Reel of 2000 SN74LV21APWR
LV21A
TSSOP − PW
Reel of 250 SN74LV21APWT
LV21A
TVSOP − DGV Reel of 2000 SN74LV21ADGVR LV21A
CDIP − J Tube of 25 SNJ54LV21AJ SNJ54LV21AJ
−55°C to 125°C
CFP − W Tube of 150 SNJ54LV21AW SNJ54LV21AW
−55 C to 125 C
LCCC − FK Tube of 55 SNJ54LV21AFK SNJ54LV21AFK
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
Copyright  2005, Texas Instruments Incorporated
SN54LV21A ...FK PACKAGE
(TOP VIEW)
SN54LV21A ...J OR W PACKAGE
SN74LV21A ... D, DB, DGV, NS, OR PW PACKAGE
(TOP VIEW)
NC − No internal connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1B
NC
1C
1D
1Y
GND
V
CC
2D
2C
NC
2B
2A
2Y
3212019
910111213
4
5
6
7
8
18
17
16
15
14
2C
NC
NC
NC
2B
NC
NC
1C
NC
1D
1B 1A NC
2Y 2A
V 2D
1Y
GND
NC
CC
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.
    !"# #$# %
 #&'!$# ''"# $ & ()*$# $"+ ' #&'! 
("&$# ("' " "'! & ",$ #'!"# $#$' -$''$#.+
'# ('"#/ " # #""$'*. #*" "#/ & $**
($'$!""'+