SN74AVC6T622 Datasheet, PDF (1/23 Pages) Texas Instruments – AUDIO CODEC AC 97 VOLTAGE-TRANSLATION TRANSCEIVER

SN74AVC6T622
www.ti.com ......................................................................................................................................................................................... SCES706 – SEPTEMBER 2008
AUDIO CODEC AC'97 VOLTAGE-TRANSLATION TRANSCEIVER
FEATURES
1
• Voltage-Level Transceiver for Interfacing 1.8 V
Audio Codec (AC'97) Controllers With 3.3 V
AC'97 Codec Links
• Configurable I/O Switching Levels With
Dual-Supply Pins Operating Over Full 1.2-V to
3.6-V Power-Supply Range
• For Low-Power Operation, A and B Ports Are
Placed in High-Impedance State When Either
Supply Voltage Is Switched Off
PW PACKAGE
TOP VIEW
DIR2
1
V_CCA
2
A4
3
A5
4
GND
5
A6
6
A1
7
A3
8
DNU
9
A2
10
20
DIR1
19
V_CCB
18
B4
17
B5
16
GND
15
B6
14
B2
13
B1
12
B3
11
DIR(345)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 7000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1500-V Charged-Device Model (C101)
RGY PACKAGE
TOP VIEW
DIR2 ¹
DIR1 ²⁰
Exposed
Center
Pad
10 _A2
11 _DIR(345)
ZXY PACKAGE
(TOP VIEW)
ABCD
5
4
3
2
1
The exposed center pad, if used, must be
connected as a secondary ground or left
electrically open.
TERMINAL ASSIGNMENTS
(20-Ball ZXY Package)
A
B
C
5
V_CCA
DIR2
DIR1
4
A5
A4
B4
3
A6
GND
GND
2
A3
1
DNU ⁽¹⁾
A1
B2
A2
DIR(345)
(1) DNU – Do not use; should be left unconnected
D
V_CCB
B5
B6
B1
B3
DESCRIPTION/ORDERING INFORMATION
The SN74AVC6T622 is a voltage-level transceiver for interfacing 1.8 V audio codec (AC'97) controllers, the
audio/analog modem functionality found in personal computers, with 3.3V AC'97 codec links. With the digital
switching levels of today's AC'97 codecs lowering to 1.8-V logic levels, the SN74AVC6T622 device can be used
to bridge the gap between legacy 3.3-V AC'97 codecs and AC'97 controllers that are now operating at 1.8 V. The
6-bit wide SN74AVC6T622 device complies with the AC'97 electrical interface (both levels and timing)
specification.
1
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated