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74ALVT16501 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 74ALVT16501
Description  2.5V/3.3V 18-bit universal bus transceiver 3-State
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74ALVT16501 Datasheet(HTML) 2 Page - NXP Semiconductors

 
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Philips Semiconductors
Product specification
74ALVT16501
2.5V/3.3V 18-bit universal bus transceiver (3-State)
2
1998 Feb 13
853-1884 18958
FEATURES
18-bit bidirectional bus interface
5V I/O Compatible
3-State buffers
Output capability: +64mA/-32mA
TTL and LVTTL input and output switching levels
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
Live insertion/extraction permitted
Power-up reset
Power-up 3-State
No bus current loading when output is tied to 5V bus
Positive edge triggered clock inputs
Latch-up protection exceeds 500mA per JEDEC Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 400V per Machine Model
DESCRIPTION
The 74ALVT16501 is a high-performance BiCMOS product
designed for VCC operation at 2.5V and 3.3V with I/O compatibility
up to 5V.
This device is an 18-bit universal transceiver featuring non-inverting
3-State bus compatible outputs in both send and receive directions.
Data flow in each direction is controlled by output enable (OEAB and
OEBA), latch enable (LEAB and LEBA), and clock (CPAB and
CPBA) inputs. For A-to-B data flow, the device operates in the
transparent mode when LEAB is High. When LEAB is Low, the A
data is latched if CPAB is held at a High or Low logic level. If LEAB
is Low, the A-bus data is stored in the latch/flip-flop on the
Low-to-High transition of CPAB. When OEAB is High, the outputs
are active. When OEAB is Low, the outputs are in the
high-impedance state.
Data flow for B-to-A is similar to that of A-to-B but uses OEBA,
LEBA and CPBA. The output enables are complimentary (OEAB is
active High, and OEBA is active Low).
Active bus-hold circuitry is provided to hold unused or floating data
inputs at a valid logic level.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
SYMBOL
PARAMETER
Tamb = 25°C
2.5V
3.3V
UNIT
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
CL = 50pF
1.9
2.5
1.4
1.8
ns
CIN
Input capacitance (Control pins)
VI = 0V or VCC
4
4
pF
CI/O
I/O pin capacitance
VI/O = 0V or VCC
8
8
pF
ICCZ
Total supply current
Outputs disabled
40
60
µA
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
56-Pin Plastic SSOP Type III
–40
°C to +85°C
74ALVT16501 DL
AV16501 DL
SOT371-1
56-Pin Plastic TSSOP Type II
–40
°C to +85°C
74ALVT16501 DGG
AV16501 DGG
SOT364-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
1
OEAB
A-to-B Output enable input
27
OEBA
B-to-A Output enable input (active low)
2, 28
LEAB/LEBA
A-to-B/B-to-A Latch enable input
55,30
CPAB/CPBA
A-to-B/B-to-A Clock input (active rising edge)
3, 5, 6, 8, 9, 10, 12, 13, 14, 15,
16, 17, 19, 20, 21, 23, 24, 26
A0-A17
Data inputs/outputs (A side)
54, 52, 51, 49, 48, 47, 45, 44, 43,
42, 41, 40, 38, 37, 36, 34, 33, 31
B0-B17
Data inputs/outputs (B side)
4, 11, 18, 25, 32, 39, 46, 53, 29, 56
GND
Ground (0V)
7, 22, 35, 50
VCC
Positive supply voltage


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