参数资料
型号: 74ALVCH16601
厂商: NXP Semiconductors N.V.
英文描述: Quadruple Positive-NAND Gates With Schmitt-Trigger Inputs 14-TSSOP -40 to 85
中文描述: 18位通用总线收发器,三态
文件页数: 2/12页
文件大小: 86K
代理商: 74ALVCH16601
Philips Semiconductors
Product specification
74ALVCH16601
18-bit universal bus transceiver (3-State)
2
1998 Sep 24
853-2122 20076
FEATURES
Complies with JEDEC standard no. 8-1A
CMOS low power consumption
Direct interface with TTL levels
MULTIBYTE
TM
flow-through standard pin-out architecture
Low inductance multiple V
CC
and ground pins for minimum noise
and ground bounce
Current drive
±
24 mA at 3.0 V
All inputs have bus hold circuitry
Output drive capability 50
transmission lines @ 85
°
C
DESCRIPTION
The 74ALVCH16601 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 (OE
AB
and OE
BA
), latch enable (LE
AB
and LE
BA
), and clock
(CP
AB
and CP
BA
) inputs. For A-to-B data flow, the device operates
in the transparent mode when LE
AB
is High. When LE
AB
is Low, the
A data is latched if CP
AB
is held at a High or Low logic level. If LE
AB
is Low, the A-bus data is stored in the latch/flip-flop on the
Low-to-High transition of CP
AB
. When OE
AB
is Low, the outputs are
active. When OE
AB
is High, the outputs are in the high-impedance
state. The clocks can be controlled with the clock-enable inputs
(CE
BA
/CE
AB
).
Data flow for B-to-A is similar to that of A-to-B but uses OE
BA
, LE
BA
and CP
BA
.
To ensure the high impedance state during power up or power
down, OE
BA
and OE
AB
should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the
current-sinking/current-sourcing capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data
inputs at a valid logic level.
QUICK REFERENCE DATA
GND = 0V; T
amb
= 25
°
C; t
r
= t
f
= 2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
/t
PLH
Propagation delay
An, Bn to Bn, An
V
CC
= 2.5V, C
L
= 30pF
V
CC
= 3.3V, C
L
= 50pF
3.1
2.8
ns
C
I/O
C
I
Input/Output capacitance
8.0
pF
Input capacitance
4.0
pF
C
PD
Power dissipation capacitance per latch
V = GND to V
CC1
Outputs enabled
21
pF
Outputs disabled
3
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in W):
P
= C
×
V
CC2
×
f
+ (C
L
×
V
CC2
×
f
) where:
f
i
= input frequency in MHz; C
L
= output load capacity in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
(C
L
×
V
CC2
×
f
o
) = sum of outputs.
ORDERING INFORMATION
PACKAGES
56-Pin Plastic TSSOP Type II
TEMPERATURE RANGE
–40
°
C to +85
°
C
OUTSIDE NORTH AMERICA
74ALVCH16601 DGG
DWG NUMBER
SOT364-1
相关PDF资料
PDF描述
74ALVCH16623DGG 16-bit transceiver with dual enable; 3-state
74ALVCH16623 16-bit transceiver with dual enable; 3-state
74ALVCH16646 Quadruple Positive-NAND Gates With Schmitt-Trigger Inputs 14-TSSOP -40 to 85
74ALVCH16652 16-bit transceiver/register with dual enable; 3-state
74ALVCH16821 Quadruple Positive-NAND Gates With Schmitt-Trigger Inputs 14-TSSOP -40 to 85
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