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ꢌꢍꢎ ꢄ ꢇ ꢏ ꢐꢑ ꢒ ꢐꢑ ꢁꢎꢓꢔ ꢕ ꢖꢍ ꢁ ꢒꢊ ꢓ
ꢗ ꢑꢒ ꢘ ꢙ ꢉꢀꢒꢎꢒ ꢊ ꢖ ꢍꢒ ꢋꢍꢒ ꢓꢊ ꢚ ꢑꢀ ꢒꢊ ꢓ ꢀ
SCLS704A − JULY 2006 − REVISED SEPTEMBER 2007
D
Controlled Baseline
− One Assembly Site
− One Test Site
D
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− One Fabrication Site
− 1000-V Charged-Device Model (C101)
†
Component qualification in accordance with JEDEC and industry
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
D
D
Extended Temperature Performance of
−55°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
D
D
D
Enhanced Product-Change Notification
†
Qualification Pedigree
Can Be Used as Two 16 Bit Counters or a
Single 32 Bit Counter
PW PACKAGE
(TOP VIEW)
D
D
D
2-V to 5.5-V V
Operation
CC
CLKA
CLKB
GAL
GAU
GBL
1
2
3
4
5
6
7
8
9
10
20
V
CC
Max t of 25 ns at 5 V (RCLK to Y)
pd
19 Y0
18 Y1
17 Y2
Typical V
<0.7 V at V
(Output Ground Bounce)
OLP
CC
= 5 V, T = 25°C
A
D
D
D
Typical V
>4.4 V at V
(Output V
Undershoot)
OHV
CC
OH
16
Y3
= 5 V, T = 25°C
A
GBU
15 Y4
I
Supports Partial-Power-Down Mode
14
13
12
11
RCLK
RCOA
CLKBEN
GND
Y5
Y6
Y7
CCLR
off
Operation
Latch-Up Performance Exceeds 250 mA Per
JESD 17
description/ordering information
The SN74LV8154 is a dual 16 bit binary counter with 3-state output registers, designed for 2-V to 5.5-V V
operation.
CC
This 16 bit counter (A or B) feeds a 16 bit storage register and each storage register is further divided into an
upper byte and lower byte. The GAL, GAU, GBL, and GBU inputs are used to select the byte that needs to be
output at Y0−Y7. CLKA is the clock for A counter and CLKB is the clock for B counter. RCLK is the clock for the
A and B storage registers. All three clock signals are positive-edge triggered.
A 32 bit counter can be realized by connecting CLKA and CLKB together and by connecting RCOA to CLKBEN.
To ensure the high-impedance state during power up or power down, GAL, GAU, GBL, and GBU should be tied
to V through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability
CC
of the driver.
This device is fully specified for partial-power-down applications using I . The I circuitry disables the outputs,
off
off
preventing damaging current backflow through the device when it is powered down.
†
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
}
T
A
PACKAGE
−55°C to 125°C
TSSOP − PW Tape and reel
SN74LV8154MPWREP
LV8154ME
†
‡
For the most current package and ordering information, see the Package Option Addendum at the
end of this document, or see the TI website at www.ti.com.
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/packaging.
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.
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