MB2646 Datasheet, PDF (1/16 Pages) NXP Semiconductors – Dual octal bus transceiver/registers 3-State

Philips Semiconductors Products
Dual octal bus transceiver/registers (3-State)
Product specification
MB2646
FEATURES
• Independent registers for A and B buses
• Multiple V_CC and GND pins minimize
switching noise
• Live insertion/extraction permitted
• Power-up 3-State
• Power-up reset
• Multiplexed real-time and stored data
• Outputs sink 64mA and source 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 MB2646 high-performance BiCMOS
device combines low static and dynamic
power dissipation with high speed and high
output drive.
The MB2646 dual transceiver/register
consists of two sets of bus transceiver
circuits with 3-State outputs, D-type flip-flops,
and control circuitry arranged for multiplexed
transmission of data directly from the input
bus or from the internal registers. Data on the
A or B bus will be clocked into the registers
as the appropriate clock pin goes High.
Output Enable (nOE) and Direction (nDIR)
pins are provided to control the transceiver
function. In the transceiver mode, data
present at the high impedance port may be
stored in either the A or B register or both.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
t_PLH
Propagation delay
t_PHL
nAx to nBx
C_IN
Input capacitance
CONDITIONS
T_amb = 25°C; GND = 0V
C_L = 50pF; V_CC = 5V
V_I = 0V or V_CC
TYPICAL
3.2
4
UNIT
ns
pF
C_I/O
I_CCZ
I/O capacitance
Total supply current
V_O = 0V or V_CC; 3-State
Outputs disabled; V_CC = 5.5V
7
pF
500
µA
ORDERING INFORMATION
PACKAGES
52-pin plastic Quad Flat Pack
TEMPERATURE RANGE
-40°C to +85°C
ORDER CODE
MB2646BB
DRAWING NUMBER
1418B
PIN CONFIGURATION
1A2 ¹
1A3 2
1A4 3
GND 4
1A5 5
1A6 6
1A7 7
2A0 8
2A1 9
2A2 10
2A3 11
2A4 12
2A5 13
52 51 50 49 48 47 46 45 44 43 42 41 40
MB2646
52-pin PQFP
39 1B2
38 1B3
37 1B4
36 1B5
35 1B6
34 1B7
33 2B0
32 2B1
31 2B2
30 GND
29 2B3
28 2B4
27 2B5
14 15 16 17 18 19 20 21 22 23 24 25 26
LOGIC SYMBOL
50 51 1 2 3 5 6 7
1A0 1A1 1A2 1A3 1A4 1A5 1A6 1A7
48
1CPAB
49
1SAB
47
1DIR
45
1CPBA
44
1SBA
46
1OE
1B0 1B1 1B2 1B3 1B4 1B5 1B6 1B7
42 41 39 38 37 36 35 34
8 9 10 11 12 13 15 16
2A0 2A1 2A2 2A3 2A4 2A5 2A6 2A7
19
2CPAB
18
2SAB
20
2DIR
22
2CPBA
23
2SBA
21
2OE
2B0 2B1 2B2 2B3 2B4 2B5 2B6 2B7
33 32 31 29 28 27 25 24
August 23, 1993
1
853-1617 10589