SN74LV393A-Q1 Datasheet, PDF (1/12 Pages) Texas Instruments – DUAL 4-BIT BINARY COUNTER

SN74LV393A-Q1
DUAL 4-BIT BINARY COUNTER
D Qualified for Automotive Applications
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D 2-V to 5.5-V V_CC Operation
D Max t_pd of 9.5 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 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
SCLS515C − JULY 2003 − REVISED FEBRUARY 2008
PW PACKAGE
(TOP VIEW)
1CLK 1
1CLR 2
1Q_A 3
1Q_B 4
1Q_C ⁵
1Q_D ⁶
GND ⁷
14 V_CC
13 2CLK
12 2CLR
11 2Q_A
10 _2QB
9 _2QC
8 _2QD
description/ordering information
The SN74LV393A contains eight flip-flops and additional gating to implement two individual 4-bit counters in
a single package. This device is designed for 2-V to 5.5-V V_CC operation.
This device comprises two independent 4-bit binary counters, each having a clear (CLR) and a clock (CLK)
input. The device changes 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 SN74LV393A has parallel
outputs from each counter stage so that any submultiple of the input count frequency is available for system
timing signals.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION^†
T_A
PACKAGE^‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40°C to 105°C TSSOP − PW Tape and reel SN74LV393ATPWRQ1 LV393AT
† _{For the most current package and ordering information, see the Package Option Addendum at the end}
of this document, or see the TI web site at http://www.ti.com.
‡ _{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
FUNCTION TABLE
INPUTS
CLK CLR
FUNCTION
↑
L
No change
↓
L
Advance to next stage
X
H
All outputs L
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is 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.
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