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74ALVCH16821DL View Datasheet(PDF) - Philips Electronics

Part Name
Description
Manufacturer
74ALVCH16821DL Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Philips Semiconductors
20-bit bus-interface D-type flip-flop;
positive-edge trigger (3-State)
Product specification
74ALVCH16821
AC WAVEFORMS
VCC = 2.3 TO 2.7 V RANGE
1. VM = 0.5 V
2. VX = VOL + 0.15V
3. VY = VOH – 0.15V
4. VI = VCC
5. VOL and VOH are the typical output voltage drop that occur with
the output load.
VCC = 3.0 TO 3.6 V RANGE AND VCC = 2.7 V
1. VM = 1.5 V
2. VX = VOL + 0.3V
3. VY = VOH – 0.3V
4. VI = 2.7 V
5. VOL and VOH are the typical output voltage drop that occur with
the output load.
VI
nCP INPUT
GND
VOH
nQn OUTPUT
VOL
1/fMAX
VM
tw
tPHL
VM
tPLH
VM
SH00128
Waveform 1. The input (nCP) to output propagation delays.
VI
nOE INPUT
VM
GND
VCC
OUTPUT
LOW-to-OFF
OFF-to-LOW
VOL
VOH
OUTPUT
HIGH-to-OFF
OFF-to-HIGH
GND
tPLZ
tPZL
VM
VX
tPHZ
VY
tPZH
VM
outputs
enabled
outputs
disabled
outputs
enabled
SW00308
Waveform 2. The 3-State enable and disable times.
VI
nCP INPUT
GND
VI
nDn INPUT
GND
VM
tsu
th
VM
tsu
th
VOH
nQn OUTPUT
VOL
Waveform 3.
VM
SH00129
Set up and hold times.
TEST CIRCUIT
VCC
PULSE
GENERATOR
VI
RT
VO
D.U.T.
CL
S1
2 * VCC
Open
GND
RL = 500
RL = 500
Test Circuit for switching times
DEFINITIONS
RL = Load resistor
CL = Load capacitance includes jig and probe capacitance
RT = Termination resistance should be equal to ZOUT of pulse generators.
SWITCH POSITION
TEST
S1
VCC
VI
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2 < VCC
GND
< 2.7V
2.7–3.6V
VCC
2.7V
SV00906
Waveform 4. Load circuitry for switching times
1998 May 29
8
 

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