74ALVT16501 데이터 시트보기 (PDF) - Philips Electronics
부품명
상세내역
제조사
74ALVT16501 Datasheet PDF : 16 Pages
| |||
Philips Semiconductors
2.5V/3.3V 18-bit universal bus transceiver (3-State)
Product specification
74ALVT16501
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
tPLH
tPHL
CIN
CI/O
ICCZ
Propagation delay
An to Bn or Bn to An
Input capacitance (Control pins)
I/O pin capacitance
Total supply current
CONDITIONS
Tamb = 25°C
CL = 50pF
VI = 0V or VCC
VI/O = 0V or VCC
Outputs disabled
TYPICAL
2.5V
3.3V
1.9
1.4
2.5
1.8
4
4
8
8
40
60
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
56-Pin Plastic SSOP Type III
56-Pin Plastic TSSOP Type II
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
–40°C to +85°C
74ALVT16501 DL
–40°C to +85°C
74ALVT16501 DGG
NORTH AMERICA
AV16501 DL
AV16501 DGG
DWG NUMBER
SOT371-1
SOT364-1
PIN DESCRIPTION
PIN NUMBER
1
27
2, 28
55,30
3, 5, 6, 8, 9, 10, 12, 13, 14, 15,
16, 17, 19, 20, 21, 23, 24, 26
54, 52, 51, 49, 48, 47, 45, 44, 43,
42, 41, 40, 38, 37, 36, 34, 33, 31
4, 11, 18, 25, 32, 39, 46, 53, 29, 56
7, 22, 35, 50
SYMBOL
OEAB
OEBA
LEAB/LEBA
CPAB/CPBA
A0-A17
B0-B17
GND
VCC
NAME AND FUNCTION
A-to-B Output enable input
B-to-A Output enable input (active low)
A-to-B/B-to-A Latch enable input
A-to-B/B-to-A Clock input (active rising edge)
Data inputs/outputs (A side)
Data inputs/outputs (B side)
Ground (0V)
Positive supply voltage
1998 Feb 13
2
853-1884 18958
Share Link: 