Texas Instruments SN74ALVCH16600DGGR, SN74ALVCH16600DL, SN74ALVCH16600DLR Datasheet
SN74ALVCH16600
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES030E – JULY 1995 – REVISED MAY 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Member of the Texas Instruments
Widebus
Family
D
EPIC
(Enhanced-Performance Implanted
CMOS) Submicron Process
D
UBT
(Universal Bus Transceiver)
Combines D-Type Latches and D-Type
Flip-Flops for Operation in Transparent,
Latched, Clocked, or Clock-Enabled Mode
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 18-bit universal bus transceiver is designed
for 1.65-V to 3.6-V VCC operation.
The SN74AL VCH16600 combines D-type latches
and D-type flip-flops to allow data flow in
transparent, latched, and clocked modes.
Data flow in each direction is controlled by
output-enable (OEAB and OEBA), latch-enable
(LEAB and LEBA), and clock (CLKAB and
CLKBA) inputs. The clock can be controlled by the
clock-enable (CLKENAB and CLKENBA) inputs. For A-to-B data flow, the device operates in the transparent
mode when LEAB is high. When LEAB is low, the A data is latched if CLKAB
is held at a high or low logic level.
If LEAB is low, the A data is stored in the latch/flip-flop on the high-to-low transition of CLKAB. Output enable
OEAB is active low. When OEAB is low, the outputs are active. When OEAB is high, the outputs are in the
high-impedance state.
Data flow for B to A is similar to that of A to B but uses OEBA, LEBA, CLKBA, and CLKENBA.
T o ensure the high-impedance state during power up or power down, OE should be tied to VCC 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 SN74ALVCH16600 is characterized for operation from –40°C to 85°C.
Copyright 2000, 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.
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.
DGG 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
OEAB
LEAB
A1
GND
A2
A3
V
CC
A4
A5
A6
GND
A7
A8
A9
A10
A11
A12
GND
A13
A14
A15
V
CC
A16
A17
GND
A18
OEBA
LEBA
CLKENAB
CLKAB
B1
GND
B2
B3
V
CC
B4
B5
B6
GND
B7
B8
B9
B10
B11
B12
GND
B13
B14
B15
V
CC
B16
B17
GND
B18
CLKBA
CLKENBA
EPIC, UBT, and Widebus are trademarks of Texas Instruments.
SN74ALVCH16600
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES030E – JULY 1995 – REVISED MAY 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
†
INPUTS
OUTPUT
CLKENAB OEAB
LEAB
CLKAB
A
B
X H X X X Z
X LH XL L
X LH XH H
H LL XXB
0
‡
H LL XXB
0
‡
L LL ↓ LL
L LL ↓ HH
L LL HXB
0
‡
L L L L X B
0
§
†
A-to-B data flow is shown; B-to-A flow is similar but uses
OEBA
, LEBA, and CLKBA.
‡
Output level before the indicated steady-state input
conditions were established, provided that CLKAB was high
before LEAB went low
§
Output level before the indicated steady-state input
conditions were established
SN74ALVCH16600
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES030E – JULY 1995 – REVISED MAY 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
CE
1D
C1
CLK
CE
1D
C1
CLK
B1
OEAB
CLKENAB
CLKAB
LEAB
LEBA
CLKBA
CLKENBA
OEBA
A1
1
56
55
2
28
30
29
27
3
54
To 17 Other Channels
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