M74HCT640B1R STMicroelectronics, M74HCT640B1R Datasheet - Page 6

• Manufacturer Part Number: M74HCT640B1R
• Description: IC TRANSCVR TRI-ST 8BIT 20DIP
• Manufacturer: STMicroelectronics
• Series: 74HCTr

Specifications of M74HCT640B1R

• Logic Type: Transceiver, Inverting
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Current - Output High, Low: 6mA, 6mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

M74HCT640
TEST CIRCUIT
C
R
R
WAVEFORM 1 : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
6/11
t
t
t
PLH
PZL
PZH
L
1
T
= 50pF/150pF or equivalent (includes jig and probe capacitance)
= 1K or equivalent
= Z
, t
, t
, t
OUT
PLZ
PHL
PHZ
of pulse generator (typically 50 )
TEST
SWITCH
Open
GND
V
CC