SN74CBT16390
16-BIT TO 32-BIT FET MULTIPLEXER/DEMULTIPLEXER BUS SWITCH
SCDS035C – OCTOBER 1997 – REVISED OCT OBER 1998
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
5-Ω Switch Connection Between Two Ports
D
TTL-Compatible Input Levels
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
Package Options Include Plastic Thin
Shrink Small-Outline (DGG), Thin Very
Small-Outline (DGV), and 300-mil Shrink
Small-Outline (DL) Packages
description
The SN74CBT16390 is a 16-bit to 32-bit switch
used in applications in which two separate data
paths must be multiplexed onto, or demultiplexed
from, a single path. This device can be used for
memory interleaving, in which two different banks
of memory must be addressed simultaneously.
This also can be used to connect or isolate the PCI
bus to one or two slots simultaneously.
Two output enables (OE1 and OE2) control the
data flow. When OE1 is low, A port is connected
to 1B port. When OE2 is low, A port is connected
to 2B port. When both OE1 and OE2 are low, the
A port is connected to both 1B and 2B ports. The
control inputs can be driven with a 5-V CMOS, 5-V
TTL, or an LVTTL driver.
The SN74CBT16390 is characterized for
operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OE1 OE2
L L A = 1B and A = 2B
L H A = 1B
H L A = 2B
H H Isolation
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
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
A1
2B1
2B2
A3
2B3
2B4
A5
2B5
2B6
A7
2B7
2B8
GND
VCC
A9
2B9
2B10
A11
2B11
2B12
A13
2B13
2B14
A15
2B15
2B16
NC
NC
1B1
1B2
A2
1B3
1B4
A4
1B5
1B6
A6
1B7
1B8
A8
GND
VCC
1B9
1B10
A10
1B11
1B12
A12
1B13
1B14
A14
1B15
1B16
A16
OE1
OE2
NC – No internal connection
Copyright 1998, Texas Instruments Incorporated
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
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testing of all parameters.