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SN74BCT533 Datasheet

Octal Transparent D-Type Latch

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State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
Full Parallel Access for Loading
3-State Inverting Outputs Drive Bus Lines
or Buffer Memory Address Registers
ESD Protection Exceeds 2000 V
Per MIL-Std-883C, Method 3015
Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
description
SN74BCT533
OCTAL TRANSPARENT DĆTYPE LATCH
WITH 3ĆSTATE OUTPUTS
SCBS055A − JULY 1990 − REVISED NOVEMBER 1993
DW OR N PACKAGE
(TOP VIEW)
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 8Q
18 8D
17 7D
16 7Q
15 6Q
14 6D
13 5D
12 5Q
11 LE
The SN74BCT533 is an 8-bit transparent D-type
latch with 3-state outputs designed specifically for
driving highly capacitive or relatively low-imped-
ance loads. It is particularly suitable for
implementing buffer registers, I/O ports, bidirec-
tional bus drivers, and working registers.
When the latch-enable (LE) input is high, the Q outputs follow the complements of the data (D) inputs. When
LE is taken low, the Q outputs are latched at the inverse of the levels set up at the D inputs. The SN74BCT533
provides inverted data at its outputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus
lines without need for interface or pullup components.
The output-enable (OE) input does not affect the internal operations of the latch. Previously stored data can be
retained or new data can be entered while the outputs are in the high-impedance state.
The SN74BCT533 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each latch)
INPUTS
OE LE
D
OUTPUT
Q
L HH
L
LHL
H
LLX
HXX
Q0
Z
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.
Copyright 1993, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
1


Texas Instruments (TI) Electronic Components Datasheet

SN74BCT533 Datasheet

Octal Transparent D-Type Latch

No Preview Available !

SN74BCT533
OCTAL TRANSPARENT DĆTYPE LATCH
WITH 3ĆSTATE OUTPUTS
SCBS055A − JULY 1990 − REVISED NOVEMBER 1993
logic symbol
1
OE
11
LE
EN
C1
3
1D
4
2D
7
3D
8
4D
13
5D
14
6D
17
7D
18
8D
1D 1
2
1Q
5
2Q
6
3Q
9
4Q
12
5Q
15
6Q
16
7Q
19
8Q
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
1
OE
11
LE
3
1D
C1
1D
2D 4
3D 7
C1
1D
C1
1D
4D 8
5D 13
6D 14
C1
1D
C1
1D
C1
1D
17
7D
C1
1D
8D 18
C1
1D
2
1Q
5
2Q
6
3Q
9
4Q
12
5Q
15
6Q
16
7Q
19
8Q
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443


Part Number SN74BCT533
Description Octal Transparent D-Type Latch
Maker Texas
Total Page 7 Pages
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