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SN74LV393A Datasheet Preview

SN74LV393A Datasheet

DUAL 4-BIT BINARY COUNTER

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SN54LV393A, SN74LV393A
DUAL 4ĆBIT BINARY COUNTERS
D 2-V to 5.5-V VCC Operation
D Max tpd of 10 ns at 5 V
D Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 3.3 V, TA = 25°C
D Typical VOHV (Output VOH Undershoot)
>2.3 V at VCC = 3.3 V, TA = 25°C
D Ioff Supports Partial-Power-Down-Mode
Operation
D Dual 4-Bit Binary Counters With Individual
Clocks
D Direct Clear for Each 4-Bit Counter
D Can Significantly Improve System
Densities by Reducing Counter Package
Count by 50 Percent
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
The ’LV393A devices contain eight flip-flops and
additional gating to implement two individual 4-bit
counters in a single package. These devices are
designed for 2-V to 5.5-V VCC operation.
SCLS457D − FEBRUARY 2001 − REVISED APRIL 2005
SN54LV393A . . . J OR W PACKAGE
SN74LV393A . . . D, DB, DGV, NS, OR PW PACKAGE
(TOP VIEW)
1CLK 1
1CLR 2
1QA 3
1QB 4
1QC 5
1QD 6
GND 7
14 VCC
13 2CLK
12 2CLR
11 2QA
10 2QB
9 2QC
8 2QD
SN54LV393A . . . FK PACKAGE
(TOP VIEW)
1QA
NC
1QB
NC
1QC
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2CLR
NC
2QA
NC
2QB
NC − No internal connection
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC − D
Tube of 50
Reel of 2500
SN74LV393AD
SN74LV393ADR
LV393A
SOP − NS
Reel of 2000 SN74LV393ANSR 74LV393A
−40°C to 85°C
SSOP − DB
Reel of 2000
Tube of 90
SN74LV393ADBR
SN74LV393APW
LV393A
TSSOP − PW
Reel of 2000
Reel of 250
SN74LV393APWR
SN74LV393APWT
LV393A
TVSOP − DGV Reel of 2000 SN74LV393ADGVR LV393A
CDIP − J
Tube of 25
SNJ54LV393AJ
SNJ54LV393AJ
−55°C to 125°C CFP − W
Tube of 150
SNJ54LV393AW
SNJ54LV393AW
LCCC − FK
Tube of 55
SNJ54LV393AFK
SNJ54LV393AFK
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.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright 2005, Texas Instruments Incorporated
1




etcTI

SN74LV393A Datasheet Preview

SN74LV393A Datasheet

DUAL 4-BIT BINARY COUNTER

No Preview Available !

SN54LV393A, SN74LV393A
DUAL 4ĆBIT BINARY COUNTERS
SCLS457D − FEBRUARY 2001 − REVISED APRIL 2005
description/ordering informaton (continued)
These devices comprise two independent 4-bit binary counters, each having a clear (CLR) and a clock (CLK)
input. These devices change state on the negative-going transition of the CLK pulse. N-bit binary counters can
be implemented with each package, providing the capability of divide by 256. The ’LV393A devices have parallel
outputs from each counter stage so that any submultiple of the input count frequency is available for system
timing signals.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the
outputs, preventing damaging current backflow through the devices when they are powered down.
FUNCTION TABLE
INPUTS
CLK CLR
FUNCTION
L
No change
L
Advance to next stage
X
H
All outputs L
logic diagram, each counter (positive logic)
CLR
CLK
R
Q
QA
T
R
Q
QB
T
R
Q
QC
T
R
Q
QD
T
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN74LV393A
Description DUAL 4-BIT BINARY COUNTER
Maker etcTI
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