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74ALVCH162245DL Datenblatt(Datasheet) 7 Page - NXP Semiconductors

Teile-Nr. 74ALVCH162245DL
Beschreibung  16-bit bus transceiver with direction pin and 30ohm termination resistor 3-State
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Hersteller  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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Philips Semiconductors
Product specification
74ALVCH162245
16-bit bus transceiver with direction pin and
30
Ω termination resistor (3-State)
1998 Jun 29
7
AC WAVEFORMS FOR VCC = 2.3V TO 2.7V AND
VCC < 2.3V RANGE
VM = 0.5 VCC
VX = VOL + 0.15V
VY = VOH –0.15V
VOL and VOH are the typical output voltage drop that occur with the
output load.
V
I = VCC
AC WAVEFORMS FOR VCC = 3.0V TO 3.6V AND
VCC = 2.7V RANGE
VM = 1.5 V
VX = VOL + 0.3V
VY = VOH –0.3V
VOL and VOH are the typical output voltage drop that occur with the
output load.
V
I = 2.7V
SW00063
An, Bn
INPUT
VM
tPHL
tPLH
VOL
VI
VM
GND
VOH
Bn, An
OUTPUT
Waveform 1. Input (nAn, nBn) to output (nBn, nAn)
propagation delay times
tPLZ
tPZL
VI
OE INPUT
GND
VCC
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
outputs
enabled
outputs
enabled
outputs
disabled
tPHZ
VM
VM
VM
tPZH
VX
VY
SW00064
Waveform 2. 3-State enable and disable times
TEST CIRCUIT
SWITCH POSITION
PULSE
GENERATOR
RT
VI
D.U.T.
VO
CL
VCC
RL = 500 Ω
Test Circuit for switching times
Open
GND
S1
DEFINITIONS
VCC
VI
< 2.7V
VCC
TEST
S1
tPLH/tPHL
Open
RL = Load resistor
CL = Load capacitance includes jig and probe capacitance
RT = Termination resistance should be equal to ZOUT of pulse generators.
2
< VCC
tPLZ/tPZL
2.7V
2.7–3.6V
tPHZ/tPZH
GND
RL = 500 Ω
2 * VCC
SV00906
Waveform 3. Load circuitry for switching times




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