SN74ALVC162836
20-BIT UNIVERSAL BUS DRIVER
WITH 3-STATE OUTPUTS
SCES129B – MARCH 1998 – REVISED FEBRUARY 1999
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
OE
Y1
Y2
GND
Y3
Y4
1
2
3
4
5
6
7
8
9
10
56 CLK
55 A1
54 A2
53 GND
52 A3
51 A4
Output Port Has Equivalent 26-Ω Series
Resistors, So No External Resistors Are
Required
Designed to Comply With JEDEC 168-Pin
and 200-Pin SDRAM Buffered DIMM
Specification
V
50
V
CC
Y5
CC
49 A5
48 A6
Package Options Include Plastic Shrink
Small-Outline (DL), Thin Shrink
Small-Outline (DGG), and Thin Very
Small-Outline (DGV) Packages
Y6
Y7
GND 11
Y8 12
47
A7
46 GND
45 A8
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
Y9
Y10
Y11
Y12
Y13
GND
Y14
Y15
Y16
A9
description
A10
A11
A12
A13
GND
A14
A15
A16
This 20-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.
V
V
CC
CC
Y17
Y18
GND
Y19
Y20
NC
A17
A18
GND
A19
A20
LE
The output port includes equivalent 26-Ω series
resistors to reduce overshoot and undershoot.
To ensure the high-impedance state during power
NC – No internal connection
up or power down, OE should be tied to V
CC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
The SN74ALVC162836 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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265