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SN54HC640, SN74HC640
SCLS303E – JANUARY 1996 – REVISED SEPTEMBER 2022
SNx4HC640 Octal Bus Transceivers With 3-State Outputs
1 Features
• Wide operating voltage range of 2V to 6V • High-Current 3-state outputs can drive up to 10
LSTTL loads • Low power consumption, 80-µA max ICC • Typical tpd = 8ns • ±4-mA output drive at 5V • Low input current of 1µA max • Inverting logic
2 Description
The SNx4HC640 is an octal bus transceiver with 3state outputs. All eight channels are controlled by the direction (DIR) pin and output enable OE pin.
PART NUMBER SN54HC640
SN74HC640
Device Information(1)
PACKAGE
BODY SIZE (NOM)
J (CDIP, 20)
26.92 mm × 6.92 mm
DW (SOIC, 20) 12.80 mm × 7.50 mm
N (PDIP, 20)
25.40 mm × 6.35 mm
NS (SO, 20)
15.00 mm × 5.30 mm
PW (TSSOP, 20) 4.40 mm × 6.