SN74ALVCH16334
16-BIT UNIVERSAL BUS DRIVER
WITH 3-STATE OUTPUTS
SCES090H – OCTOBER 1996 – REVISED FEBRUARY 1999
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
OE
Y1
Y2
GND
Y3
Y4
CLK
A1
A2
GND
A3
A4
2
Designed to Comply With JEDEC 168-Pin
and 200-Pin SDRAM Buffered DIMM
Specification
3
4
5
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
6
7
V
V
CC
Y5
CC
8
A5
A6
GND
A7
A8
9
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Y6
GND
Y7
Y8
Y9
Y10
GND
Y11
Y12
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
A9
A10
GND
A11
A12
Package Options Include Plastic Shrink
Small-Outline (DL), Thin Shrink
Small-Outline (DGG), and Thin Very
Small-Outline (DGV) Packages
V
V
CC
CC
Y13
Y14
GND
Y15
Y16
NC
A13
A14
GND
A15
A16
LE
description
This 16-bit universal bus driver is designed for
1.65-V to 3.6-V V operation.
CC
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 low. When LE is high, the A data is latched
if the clock (CLK) input is held at a high or low logic
level. If LE is high, 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.
NC – No internal connection
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup
CC
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH16334 is characterized for operation from –40°C to 85°C.
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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
Copyright 1999, Texas Instruments Incorporated
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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