Buffer Type Summary
Table 2 below describes the buffer types shown in Table 1. All values are specified at Vcc = +3.3v, ±10%
Table 2 - FDC37N3869 Buffer Type Summary (See Note)
BUFFER TYPE
IO12
O12
DESCRIPTION
Input/Output. 12mA sink; 6mA source
Output. 12mA sink; 6mA source
O12PD
OD12
O6
Output. 12mA sink; 6mA source with 30µa pull-down
Open Drain. 12mA sink
Output. 6mA sink; 3mA source
OD14
OP14
IOP14
O4
Open Drain. 14mA sink
Output. 14mA sink; 14mA source. Backdrive Protected
Input/Output. 14mA sink; 14mA source. Backdrive Protected
Output. 4mA sink; 2mA source
ICLK
I
Input to Crystal Oscillator Circuit (TTL levels)
Input TTL Compatible
IS
Input with Schmitt Trigger
IOD12
Input/Open Drain Output. 12mA sink
Note: These are minimum ratings guaranteed at 3.3V.
SMSC DS – FDC37N3869
Page 15
Rev. 10/25/2000
SMSC [ SMSC CORPORATION ]
