Fairchild Semiconductor 74ABT16541CSSCX, 74ABT16541CSSC, 74ABT16541CMTDX, 74ABT16541CMTD Datasheet

© 1999 Fairchild Semiconductor Corporation DS012149 www.fairchildsemi.com
July 1996 Revised November 1999
74ABT16541 16-Bit Buffer/Line Driver with 3-STATE Outputs
74ABT16541 16-Bit Buffer/Line Driver with 3-STATE Outputs
General Description
The ABT16541 contai ns sixteen n on-invertin g buffers with 3-STATE ou tputs designed to be employed as a memo ry and address driver, clock driver, or bus oriented transmit­ter/receiver. The device is byte controlled. Individual 3­STATE contro l inputs can be shorted t ogether for 8-bit or 16-bit operation.
Features
Separate control logic for each nibble
16-bit version of the ABT541
Outputs sink capability of 64 mA, source capability of
32 mA
Guaranteed simultaneous switching noise level and dynamic threshold performan ce
Guarante ed latchup protection
High impedance glitch free bus loading during entire
power up and power down cycle
Non-destructive hot insertion capability
Ordering Code:
Device also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Connection Diagram
Order Number Package Number Package Description
74ABT16541CSSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide 74ABT16541CMTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Pin Names Description
OE
n
Output Enable Inputs (Active Low)
I
0–I15
Inputs
O
0–O15
Outputs
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74ABT16541
Truth Tables
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
Functional Description
The ABT16541 contains sixtee n non-inverting buffers with 3-STATE outputs. The device is byte (8 bits) controlled with each byte functioning identically, but independent of the other. The control pins can be shorted tog ether to obtain full 16-bit operation.
Logic Diagrams
Inputs Outputs
OE
1
OE
2
I0–I
7
O0–O
7
LL L L LLH H HX X Z XH X Z
Inputs Outputs
OE
4
OE
3
I8–I
15
O8–O
15
LL L L
LL H H HX X Z XH X Z
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74ABT16541
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired . Functional operation under these conditions is not implied.
Note 2: Either voltage lim it or c urrent limit is sufficient to pro te c t in puts.
DC Electrical Characteristics
Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Junction Temperature under Bias −55°C to +150°C V
CC
Pin Potential to Ground Pin 0.5V to +7.0V Input Voltage (Note 2) 0.5V to +7.0V Input Current (Note 2) 30 mA to +5.0 mA Voltage Applied to Any Output
in the Disabled or Power-Off State 0.5V to 5.5V in the HIGH State 0.5V to V
CC
Current Applied to Output
in LOW State (Max) twice the rated I
OL
(mA) DC Latchup Source Current 500 mA Over Voltage Latchup (I/O) 10V
Free Air Ambient Temperature −40°C to +85°C Supply Voltage +4.5V to +5.5V Minimum Input Edge Rate (∆V/∆t)
Data Input 50 mV/ns Enable Input 20 mV/ns
Symbol Parameter Min Typ Max Units
V
CC
Conditions
V
IH
Input HIGH Voltage 2.0 V Recognized HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized LOW Signal
V
CD
Input Clamp Diode Voltage −1.2 V Min IIN = 18 mA
V
OH
Output HIGH 2.5 V Min IOH = 3 mA Voltage 2.0 V Min IOH = 32 mA
V
OL
Output LOW Voltage 0.55 V Min IOL = 64 mA
I
IH
Input HIGH Current 1
µAMax
VIN = 2.7V (Note 3)
1V
IN
= V
CC
I
BVI
Input HIGH Current 7
µAMax
VIN = 7.0V
Breakdown Test
I
IL
Input LOW Current −1
µAMax
VIN = 0.5V (Note 3)
1V
IN
= 0.0V
V
ID
Input Leakage Test 4.75 V 0.0 IID = 1.9 µA
All Other Pins Grounded
I
OZH
Output Leakage Current 10 µA0–5.5V
V
OUT
= 2.7V; OEn = 2.0V
I
OZL
Output Leakage Current −10 µA0–5.5V
V
OUT
= 0.5V; OEn = 2.0V
I
OS
Output Short-Circuit Current −100 −275 mA Max V
OUT
= 0.0V
I
CEX
Output HIGH Leakage Current 50 µAMaxV
OUT
= V
CC
I
ZZ
Bus Drainage Test 100 µA0.0V
OUT
= 5.5V
All Other Pins GND
I
CCH
Power Supply Current 100 µA Max All Outputs HIGH
I
CCL
Power Supply Current 60 mA Max All Outputs LOW
I
CCZ
Power Supply Current
100 µAMax
OEn = V
CC
All Others at VCC or GND
I
CCT
Additional ICC/Input Outputs Enabled 2.5 mA VI = VCC 2.1V
Outputs 3-STATE 2.5 mA Max Enable Input VI = VCC 2.1V Outputs 3-STATE 50 µA Data Input VI = VCC 2.1V
All Others at VCC or GND
I
CCD
Dynamic I
CC
No Load
mA/
Outputs Open, OEn = GND
(Note 3) 0.1 MHz Max One Bit Toggling,
50% Duty Cycle
V
OLP
Quiet Output Maximum Dynamic V
OL
0.4 0.7 V 5.0 TA = 25°C (Note 4)
V
OLV
Quiet Output Minimum Dynamic V
OL
1.3 1.0 V 5.0 TA = 25°C (Note 4)
V
OHV
Minimum HIGH Level Dynamic Output Voltage 2.7 3.0 V 5.0 TA = 25°C (Note 6)
V
IHD
Minimum HIGH Level Dynamic Input Voltage 2.0 1.4 V 5.0 TA = 25°C (Note 5)
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