MB2841 Datasheet, PDF (1/10 Pages) NXP Semiconductors – Dual 10-bit bus interface latch 3-State

Philips Semiconductors Advanced BiCMOS Products
Dual 10-bit bus interface latch (3-State)
Product specification
MB2841
FEATURES
• High speed parallel latches
• Live insertion/extraction permitted
• Extra data width for wide address/data
paths or buses carrying parity
• Power-up 3-State
• Power-up reset
• Ideal where high speed, light loading, or
increased fan-in are required with MOS
microprocessors
• 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
PARAMETER
t_PLH
t_PHL
C_IN
C_OUT
I_CCZ
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 UNIT
3.5
ns
4
pF
7
pF
120
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
LOGIC SYMBOL
1Q4 ¹
1Q5 2
1Q6 3
GND 4
1Q7 5
1Q8 6
1Q9 7
2Q0 8
2Q1 9
2Q2 10
2Q3 11
2Q4 12
2Q5 13
52 51 50 49 48 47 46 45 44 43 42 41 40
MB2841
52-pin PQFP
39 1D4
38 1D5
È_{37 1D6}
È_{36 1D7}
È35 1D8
34 1D9
33 2D0
32 2D1
31 2D2
30 GND
29 2D3
28 2D4
27 2D5
14 15 16 17 18 19 20 21 22 23 24 25 26
45 44 42 41 39 38 37 36 35 34
1D0 1D1 1D2 1D3 1D4 1D5 1D6 1D7 1D8 1D9
46
1LE
47
1OE
1Q0 1Q1 1Q2 1Q3 1Q4 1Q5 1Q6 1Q7 1Q8 1Q9
48 49 50 51 1 2 3 5 6 7
33 32 31 29 28 27 25 24 23 22
2D0 2D1 2D2 2D3 2D4 2D5 2D6 2D7 2D8 2D9
21
2LE
20
2OE
2Q0 2Q1 2Q2 2Q3 2Q4 2Q5 2Q6 2Q7 2Q8 2Q9
8 9 10 11 12 13 15 16 18 19
August 24, 1993
1
853-1668 10619