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MB2841

Description
Dual 10-bit bus interface latch 3-State
File Size62KB,10 Pages
ManufacturerPhilips Semiconductors (NXP Semiconductors N.V.)
Websitehttps://www.nxp.com/
Download Datasheet View All

MB2841 Overview

Dual 10-bit bus interface latch 3-State

Philips Semiconductors Advanced BiCMOS Products
Product specification
Dual 10-bit bus interface latch (3-State)
MB2841
FEATURES
High speed parallel latches
Live insertion/extraction permitted
Extra data width for wide address/data
Power-up 3-State
Power-up reset
Ideal where high speed, light loading, or
increased fan-in are required with MOS
microprocessors
paths or buses carrying parity
Output capability: +64mA/–32mA
Latch-up protection exceeds 500mA per
Jedec JC40.2 Std 17
ESD protection exceeds 2000V per MIL
STD 883 Method 3015 and 200V per
Machine Model
DESCRIPTION
The MB2841 Bus interface register is
designed to provide extra data width for wider
data/address paths of buses carrying parity.
The MB2841 consists of two sets of ten
D-type latches with 3-State outputs. The
flip-flops appear transparent to the data when
Latch Enable (nLE) is High. This allows
asynchronous operation, as the output
transition follows the data in transition. On the
nLE High-to-Low transition, the data that
meets the setup and hold time is latched.
Data appears on the bus when the Output
Enable (nOE) is Low. When nOE is High the
output is in the High-impedance state.
QUICK REFERENCE DATA
SYMBOL
t
PLH
t
PHL
C
IN
C
OUT
I
CCZ
PARAMETER
Propagation delay
nDx to nQx
Input capacitance
Output capacitance
Total supply current
CONDITIONS
T
amb
= 25°C; GND = 0V
C
L
= 50pF; V
CC
= 5V
V
I
= 0V or V
CC
V
O
= 0V or V
CC
; 3-State
Outputs disabled; V
CC
= 5.5V
TYPICAL
3.5
4
7
120
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
52-pin Plastic Quad Flat Pack (PQFP)
TEMPERATURE RANGE
-40°C to +85°C
ORDER CODE
MB2841BB
DRAWING NUMBER
1418B
PIN CONFIGURATION
GND
1OE
1Q3
1Q2
1Q1
1Q0
1D0
1D1
1D2
1D3
1LE
Vcc
Vcc
LOGIC SYMBOL
45
52 51
1Q4
1Q5
1Q6
GND
1Q7
1Q8
1Q9
2Q0
2Q1
1
2
3
4
5
6
7
8
9
50 49 48 47
46 45 44 43 42
41 40
39 1D4
38 1D5
37 1D6
36 1D7
35 1D8
44
42
41
39
38
37
36
35
34
1D0 1D1 1D2 1D3 1D4 1D5 1D6
46
47
1LE
1OE
1D7 1D8
1D9
MB2841
52-pin PQFP
34 1D9
33 2D0
32 2D1
31 2D2
30 GND
29 2D3
28 2D4
27 2D5
21
20
2Q2 10
2Q3 11
2Q4 12
2Q5 13
14 15 16
2Q6
2Q7
Vcc
17 18 19 20
2Q8
2Q9
2OE
GND
21 22 23 24 25
2LE
2D9
2D8
2D7
2D6
26
Vcc
August 24, 1993
È
È
È
1Q0 1Q1 1Q2 1Q3 1Q4 1Q5 1Q6 1Q7 1Q8 1Q9
48
33
49
32
50
31
51
29
1
28
2
27
3
25
5
24
6
23
7
22
2D0 2D1 2D2 2D3 2D4 2D5 2D6
2LE
2OE
2D7 2D8
2D9
2Q0 2Q1 2Q2 2Q3 2Q4 2Q5 2Q6 2Q7 2Q8 2Q9
8
9
10
11
12
13
15
16
18
19
1
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