74HCT640DB,118 NXP Semiconductors, 74HCT640DB,118 Datasheet - Page 3

• Manufacturer Part Number: 74HCT640DB,118
• Description: IC TRANSCEIVER 3ST 8BIT 20SSOP
• Manufacturer: NXP Semiconductors
• Series: 74HCTr

Specifications of 74HCT640DB,118

• 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: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74HCT640DB-T; 74HCT640DB-T; 935190190118

Philips Semiconductors
PIN DESCRIPTION
March 1988
PIN NO.
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11 B
19
20
Octal bus transceiver; 3-state; inverting
Fig.1 Pin configuration.
Fig.3 IEC logic symbol.
SYMBOL NAME AND FUNCTION
DIR
A
GND
OE
V
0
0
CC
to A
to B
7
7
FUNCTION TABLE
Note
1. H = HIGH voltage level
OE
direction control
data inputs/outputs
ground (0 V)
data inputs/outputs
output enable input (active LOW)
positive supply voltage
H
L
L
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
inputs
Fig.2 Logic symbol.
DIR
H
X
L
A
A=B
inputs
Z
3
n
inputs/outputs
B
inputs
B=A
Z
n
Fig.4 Functional diagram.
74HC/HCT640
Product specification