Harman Kardon AVR 3600 Service Manual page 197

AVR3600
D
Member of the Texas Instruments
Widebus
D
EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
description
This 20-bit noninverting buffer/driver is designed
for 1.65-V to 3.6-V V
The SN74ALVCH16827 is composed of two 10-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.
To ensure the high-impedance state during power
up or power down, OE should be tied to V
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.
Family
operation.
CC
SCES041C – JULY 1995 – REVISED FEBRUARY 1999
DGG OR DL PACKAGE
1OE1
1Y1
1Y2
GND
1Y3
1Y4
V
1Y5
1Y6
1Y7
GND
1Y8
1Y9
1Y10
2Y1
2Y2
2Y3
GND
2Y4
2Y5
2Y6
V
2Y7
2Y8
GND
2Y9
2Y10
2OE1
CC
197
harman/kardon
SN74ALVCH16827
20-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
(TOP VIEW)
1OE2
1 56
1A1
2 55
1A2
3 54
GND
4 53
1A3
5 52
1A4
6 51
V
7 50
CC CC
1A5
8 49
1A6
9 48
1A7
10 47
GND
11 46
1A8
12 45
1A9
13
44
1A10
14 43
2A1
15 42
2A2
16 41
2A3
17 40
GND
18 39
2A4
19 38
2A5
20 37
2A6
21 36
V
22 35
CC CC
2A7
23 34
2A8
24 33
GND
25 32
2A9
26 31
2A10
27 30
2OE2
28
29