SN74ALVCH16827
20-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCES041C – JULY 1995 – REVISED FEBRUARY 1999
DGG OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
1OE1
1Y1
1Y2
GND
1Y3
1Y4
1OE2
1A1
1A2
GND
1A3
1A4
1
56
55
54
53
52
51
50
49
48
47
46
45
2
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
3
4
5
Latch-Up Performance Exceeds 250 mA Per
JESD 17
6
V
V
7
CC
CC
1Y5
1Y6
1Y7
GND
1Y8
1A5
1A6
1A7
GND
1A8
8
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
9
10
11
12
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
1Y9 13
1Y10 14
2Y1 15
2Y2 16
2Y3 17
GND 18
2Y4 19
2Y5 20
2Y6 21
44 1A9
43 1A10
42 2A1
41 2A2
40 2A3
39 GND
38 2A4
37 2A5
36 2A6
description
This 20-bit noninverting buffer/driver is designed
for 1.65-V to 3.6-V V operation.
CC
TheSN74ALVCH16827iscomposedoftwo10-bit
sections with separate output-enable signals. For
either 10-bit buffer section, the two output-enable
(1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must
both be low for the corresponding Y outputs to be
active. If either output-enable input is high, the
outputs of that 10-bit buffer section are in the
high-impedance state.
V
22
35
V
CC
CC
2Y7 23
34 2A7
33 2A8
2Y8 24
GND
25
32
GND
31 2A9
2Y9 26
2Y10 27
2OE1 28
30 2A10
29 2OE2
To ensure the high-impedance state during power
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.
Active bus-hold circuitry is provided to hold
unused or floating data inputs at a valid logic level.
The SN74ALVCH16827 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
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