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SN74CBTK16245DL 数据表(PDF) 1 Page - Texas Instruments

部件名 SN74CBTK16245DL
功能描述  16-BIT FET BUS SWITCH WITH ACTIVE-CLAMP UNDERSHOOT-PROTECTION CIRCUIT
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74CBTK16245DL 数据表(HTML) 1 Page - Texas Instruments

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SN74CBTK16245
16-BIT FET BUS SWITCH
WITH ACTIVE-CLAMP UNDERSHOOT-PROTECTION CIRCUIT
SCDS105D – APRIL 2000 – REVISED NOVEMBER 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Member of the Texas Instruments
Widebus
 Family
D Standard ’16245-Type Pinout
D 5-Ω Switch Connection Between Two Ports
D TTL-Compatible Input Levels
D Ioff Supports Partial-Power-Down Mode
Operation
D Active-Clamp Undershoot-Protection
Circuit on the I/Os Clamps Undershoots up
to –2 V
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
description
The SN74CBTK16245 device provides 16 bits of
high-speed TTL-compatible bus switching in a
standard ’16245 device pinout. The low on-state
resistance of the switch allows connections to be
made with minimal propagation delay.
The A and B ports have an active-clamp
undershoot-protection circuit. When there is an
undershoot, the active-clamp circuit is enabled,
and current from VCC is supplied to clamp the
output, preventing the pass transistor from
turning on.
The device is organized as two 8-bit low-impedance switches with separate output-enable (OE) inputs. When OE is
low, the switch is on, and data can flow from the A port to the B port, or vice versa. When OE is high, the switch
is open, and the high-impedance state exists between the two ports.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SSOP
DL
Tube
SN74CBTK16245DL
CBTK16245
40
°Cto85°C
SSOP – DL
Tape and reel
SN74CBTK16245DLR
CBTK16245
–40
°C to 85°C
TSSOP – DGG
Tape and reel
SN74CBTK16245DGGR
CBTK16245
TVSOP – DGV
Tape and reel
SN74CBTK16245DGVR
CP245
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
Copyright
 2001, Texas Instruments Incorporated
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.
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
NC
1B1
1B2
GND
1B3
1B4
VCC
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
VCC
2B5
2B6
GND
2B7
2B8
NC
1OE
1A1
1A2
GND
1A3
1A4
VCC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCC
2A5
2A6
GND
2A7
2A8
2OE
NC – No internal connection
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.
Widebus is a trademark of Texas Instruments.


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