Philips 74abt16244a Service manual
INTEGRATED CIRCUITS
74ABT16244A
74ABTH16244A
16-bit buffer/line driver (3-State)
Product specification
Supersedes data of 1998 Feb 25
IC23 Data Handbook
1998 Oct 07
Philips Semiconductors Product specification
Quiescent su ly current
16-bit buffer/line driver (3-State)
FEA TURES
•16-bit bus interface
•Multiple V
•Power-up 3-State
•3-State buffers
•Output capability: +64 mA/–32mA
•Live insertion/extraction permitted
•Latch-up protection exceeds 500mA per JEDEC Std 17
•ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
•74ABTH16244A incorporates bus hold data inputs which eliminate
the need for external pull up resistors to hold unused inputs
•Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
QUICK REFERENCE DATA
SYMBOL PARAMETER
t
PLH
t
PHL
C
C
OUT
I
CCZ
I
CCL
and GND pins minimize switching noise
CC
Propagation delay
nAx to nYx
Input capacitance VI = 0V or V
IN
Output capacitance VO = 0V or VCC; 3-State 7 pF
pp
74ABT16244A
74ABTH16244A
DESCRIPTION
The 74ABT16244A high-performance BiCMOS device combines
low static and dynamic power dissipation with high speed and high
output drive.
The 74ABT16244A device is a 16-bit buffer that is ideal for driving
bus lines. The device features four Output Enables (1OE
, 4OE), each controlling four of the 3-State outputs.
3OE
Two options are available, 74ABT16244A which does not have the
bus hold feature and 74ABTH16244A which incorporates the bus
hold feature.
CONDITIONS
T
= 25°C; GND = 0V
amb
CL = 50pF; VCC = 5V
CC
TYPICAL UNIT
1.7
2.1
4 pF
Outputs disabled; VCC = 5.5V 450 µA
Outputs low; VCC = 5.5V 10 mA
, 2OE,
ns
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABT16244A DL BT16244A DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABT16244A DGG BT16244A DGG SOT362-1
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABH16244A DL BH16244A DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABH16244A DGG BH16244A DGG SOT362-1
LOGIC SYMBOL
1A0
47
1A1
46
1A2
44
1A3
43
1OE
1
2A0
41
2A1
40
2A2
38
2A3
37
2OE
48
1Y0
1Y1
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
3A0
2
36
3A1
3
35
3A2
5
33
3A3
32
6
3OE
25
4A0
8
30
4A1
9
29
4A2
11
27
4A3
26
12
4OE
24
3Y0
3Y1
3Y2
3Y3
4Y0
4Y1
4Y2
4Y3
13
14
16
17
19
20
22
23
1998 Oct 07 853-1769 20143
SA00014
2
Philips Semiconductors Product specification
16-bit buffer/line driver (3-State)
LOGIC SYMBOL (IEEE/IEC)
1
1OE
48
2OE
25
3OE
24
4OE
47
1A0
46
1A1
44
1A2
43
1A3
41
2A0
40
2A1
38
2A2
37
2A3
36
3A0
35
3A1
33
3A2
32
3A3
30
4A0
29
4A1
27
4A2
26
4A3
PIN CONFIGURATION
EN1
EN2
EN3
EN4
1 ∇
1
2 ∇1
3 ∇1
4 ∇1
2
1Y0
3
1Y1
5
1Y2
6
1Y3
8
2Y0
9
2Y1
11
2Y2
12
2Y3
13
3Y0
14
3Y1
16
3Y2
17
3Y3
19
4Y0
20
4Y1
22
4Y2
23
4Y3
SH00088
74ABT16244A
74ABTH16244A
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
47, 46, 44, 43
41, 40, 38, 37
36, 35, 33, 32
30, 29, 27, 26
2, 3, 5, 6
8, 9, 11, 12
13, 14, 16, 17
19, 20, 22, 23
1, 48
25, 24
4, 10, 15, 21
28, 34, 39, 45
7, 18, 31, 42 V
FUNCTION TABLE
nOE nAx nYx
L L L
L H H
H X Z
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
1A0 – 1A3,
2A0 – 2A3,
3A0 – 3A3,
Data inputs
4A0 – 4A3
1Y0 – 1Y3,
2Y0 – 2Y3,
3Y0 – 3Y3,
Data outputs
4Y0 – 4Y3
1OE, 2OE,
3OE, 4OE
Output enables
GND Ground (0V)
CC
Positive supply voltage
INPUTS OUTPUTS
1OE
1Y0
1Y1
GND
1Y2
1Y3
V
CC
2Y0
2Y1
GND
2Y2
2Y3
3Y0
3Y1
GND
3Y2
3Y4
V
CC
4Y0
4Y1
GND
4Y2
4Y3
4OE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
2OE
47
1A0
46
1A1
45
GND
44
1A2
43
1A3
42
V
CC
41
2A0
40
2A1
39
GND
38
2A2
37
2A3
36
3A0
35
3A1
34
GND
33
3A2
32
3A3
V
31
CC
30
4A0
29
4A1
28
GND
27
4A2
26
4A3
25
3OE
1998 Oct 07
SA00013
3
Loading...