SN74ALVCH16835
18-BIT UNIVERSAL BUS DRIVER
WITH 3-STATE OUTPUTS
www.ti.com
SCES053J–SEPTEMBER 1995–REVISED OCTOBER 2004
FEATURES
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
•
Member of the Texas Instruments Widebus™
Family
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NC
NC
GND
NC
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Operates From 1.65 V to 3.6 V
Max tpd of 3.6 ns at 3.3 V
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3
Y1
GND
Y2
A1
GND
A2
±24-mA Output Drive at 3.3 V
4
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
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6
Y3
A3
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Latch-Up Performance Exceeds 250 mA Per
JESD 17
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V
CC
V
CC
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Y4
Y5
Y6
GND
Y7
Y8
A4
A5
A6
GND
A7
9
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
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DESCRIPTION/ORDERING INFORMATION
A8
Y9
A9
This 18-bit universal bus driver is designed for 1.65-V
to 3.6-V VCC operation.
Y10
Y11
Y12
GND
Y13
Y14
Y15
A10
A11
A12
GND
A13
A14
A15
Data flow from
A to Y is controlled by the
output-enable (OE) input. The device operates in the
transparent mode when the latch-enable (LE) input is
high. The A data is latched if the clock (CLK) input is
held at a high or low logic level. If LE is low, the A
data is stored in the latch/flip-flop on the low-to-high
transition of CLK. When OE is high, the outputs are in
the high-impedance state.
V
CC
V
CC
Y16
Y17
GND
Y18
OE
A16
A17
GND
A18
CLK
GND
To ensure the high-impedance state during power up
or power down, OE should be tied to VCC through a
pullup resistor; the minimum value of the resistor is
determined by the current-sinking capability of the
driver.
LE
Active bus-hold circuitry holds unused or undriven
inputs at a valid logic state. Use of pullup or pulldown
resistors with the bus-hold circuitry is not
recommended.
NC − No internal connection
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ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
Tube
SN74ALVCH16835DL
SN74ALVCH16835DLR
SN74ALVCH16835DGGR
SN74ALVCH16835DGVR
SN74ALVCH16835KR
74ALVCH16835ZQLR
SSOP - DL
ALVCH16835
Tape and reel
Tape and reel
Tape and reel
TSSOP - DGG
ALVCH16835
VH835
-40°C to 85°C
TVSOP - DGV
VFBGA - GQL
Tape and reel
VH835
VFBGA - ZQL (Pb-free)
(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.
Widebus is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 1995–2004, 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.